新建终端 ，先下载所需要的包
dotnet add package iTextSharpMainForm
using System;
using System.Windows.Forms;
namespace PDFTools
{
public partial class MainForm : Form
{
public MainForm()
{
InitializeComponent();
}
private void btnSplitPdf_Click(object sender, EventArgs e)
{
SplitForm splitForm = new SplitForm();
splitForm.ShowDialog();
}
private void btnMergePdf_Click(object sender, EventArgs e)
{
MergeForm mergeForm = new MergeForm();
mergeForm.ShowDialog();
}
private void btnAnnotatePdf_Click(object sender, EventArgs e)
{
// 使用无参构造函数
AnnotationForm annotateForm = new AnnotationForm();
annotateForm.ShowDialog();
}
}
}MainForm.Designer.cs
namespace PDFTools
{
partial class MainForm
{
private System.ComponentModel.IContainer components = null;
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows 窗体设计器生成的代码
private void InitializeComponent()
{
this.btnSplitPdf = new System.Windows.Forms.Button();
this.btnMergePdf = new System.Windows.Forms.Button();
this.btnAnnotatePdf = new System.Windows.Forms.Button();
this.SuspendLayout();
// btnSplitPdf
this.btnSplitPdf.Location = new System.Drawing.Point(50, 30);
this.btnSplitPdf.Name = "btnSplitPdf";
this.btnSplitPdf.Size = new System.Drawing.Size(200, 60);
this.btnSplitPdf.TabIndex = 0;
this.btnSplitPdf.Text = "PDF切割";
this.btnSplitPdf.Font = new System.Drawing.Font("微软雅黑", 12F);
this.btnSplitPdf.Click += new System.EventHandler(this.btnSplitPdf_Click);
// btnMergePdf
this.btnMergePdf.Location = new System.Drawing.Point(50, 110);
this.btnMergePdf.Name = "btnMergePdf";
this.btnMergePdf.Size = new System.Drawing.Size(200, 60);
this.btnMergePdf.TabIndex = 1;
this.btnMergePdf.Text = "PDF合并";
this.btnMergePdf.Font = new System.Drawing.Font("微软雅黑", 12F);
this.btnMergePdf.Click += new System.EventHandler(this.btnMergePdf_Click);
// btnAnnotatePdf
this.btnAnnotatePdf.Location = new System.Drawing.Point(50, 190);
this.btnAnnotatePdf.Name = "btnAnnotatePdf";
this.btnAnnotatePdf.Size = new System.Drawing.Size(200, 60);
this.btnAnnotatePdf.TabIndex = 2;
this.btnAnnotatePdf.Text = "PDF标注";
this.btnAnnotatePdf.Font = new System.Drawing.Font("微软雅黑", 12F);
this.btnAnnotatePdf.Click += new System.EventHandler(this.btnAnnotatePdf_Click);
// MainForm
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(300, 280);
this.Controls.Add(this.btnAnnotatePdf);
this.Controls.Add(this.btnMergePdf);
this.Controls.Add(this.btnSplitPdf);
this.Name = "MainForm";
this.Text = "PDF工具";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.Button btnSplitPdf;
private System.Windows.Forms.Button btnMergePdf;
private System.Windows.Forms.Button btnAnnotatePdf;
}
}AnnotationForm.cs
using System;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
using iTextSharp.text;
using iTextSharp.text.pdf;
using iTextSharp.text.pdf.parser;
namespace PDFTools
{
public partial class AnnotationForm : Form
{
private string pdfFilePath;
private Bitmap signatureBitmap;
private System.ComponentModel.IContainer components = null;
private Label lblFileName;
private Button btnSelectFile;
private Label lblPageInfo;
private NumericUpDown numericPageNumber;
private Label label1;
private TextBox txtAnnotationText;
private Button btnAddText;
private Button btnLoadSignature;
private PictureBox pictureBoxSignature;
private Button btnAddSignature;
private Button btnCaptureSignature;
private Button btnSave;
public AnnotationForm()
{
InitializeComponent();
pdfFilePath = "";
lblFileName.Text = "未选择文件";
lblPageInfo.Text = "总页数: 0";
numericPageNumber.Enabled = false;
}
private void InitializeComponent()
{
this.lblFileName = new System.Windows.Forms.Label();
this.btnSelectFile = new System.Windows.Forms.Button();
this.lblPageInfo = new System.Windows.Forms.Label();
this.numericPageNumber = new System.Windows.Forms.NumericUpDown();
this.label1 = new System.Windows.Forms.Label();
this.txtAnnotationText = new System.Windows.Forms.TextBox();
this.btnAddText = new System.Windows.Forms.Button();
this.btnLoadSignature = new System.Windows.Forms.Button();
this.pictureBoxSignature = new System.Windows.Forms.PictureBox();
this.btnAddSignature = new System.Windows.Forms.Button();
this.btnCaptureSignature = new System.Windows.Forms.Button();
this.btnSave = new System.Windows.Forms.Button();
((System.ComponentModel.ISupportInitialize)(this.numericPageNumber)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.pictureBoxSignature)).BeginInit();
this.SuspendLayout();
// lblFileName
this.lblFileName.AutoSize = true;
this.lblFileName.Location = new System.Drawing.Point(120, 25);
this.lblFileName.Name = "lblFileName";
this.lblFileName.Size = new System.Drawing.Size(77, 12);
this.lblFileName.TabIndex = 0;
this.lblFileName.Text = "未选择文件";
// btnSelectFile
this.btnSelectFile.Location = new System.Drawing.Point(20, 20);
this.btnSelectFile.Name = "btnSelectFile";
this.btnSelectFile.Size = new System.Drawing.Size(90, 25);
this.btnSelectFile.TabIndex = 1;
this.btnSelectFile.Text = "选择PDF文件";
this.btnSelectFile.Click += new System.EventHandler(this.btnSelectFile_Click);
// lblPageInfo
this.lblPageInfo.AutoSize = true;
this.lblPageInfo.Location = new System.Drawing.Point(20, 60);
this.lblPageInfo.Name = "lblPageInfo";
this.lblPageInfo.Size = new System.Drawing.Size(59, 12);
this.lblPageInfo.TabIndex = 2;
this.lblPageInfo.Text = "总页数: 0";
// numericPageNumber
this.numericPageNumber.Location = new System.Drawing.Point(120, 55);
this.numericPageNumber.Minimum = new decimal(new int[] {1, 0, 0, 0});
this.numericPageNumber.Name = "numericPageNumber";
this.numericPageNumber.Size = new System.Drawing.Size(60, 21);
this.numericPageNumber.TabIndex = 3;
this.numericPageNumber.Value = new decimal(new int[] {1, 0, 0, 0});
// label1
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(20, 90);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(65, 12);
this.label1.TabIndex = 4;
this.label1.Text = "文本标注：";
// txtAnnotationText
this.txtAnnotationText.Location = new System.Drawing.Point(90, 85);
this.txtAnnotationText.Name = "txtAnnotationText";
this.txtAnnotationText.Size = new System.Drawing.Size(200, 21);
this.txtAnnotationText.TabIndex = 5;
// btnAddText
this.btnAddText.Location = new System.Drawing.Point(300, 85);
this.btnAddText.Name = "btnAddText";
this.btnAddText.Size = new System.Drawing.Size(75, 25);
this.btnAddText.TabIndex = 6;
this.btnAddText.Text = "添加文本";
this.btnAddText.Click += new System.EventHandler(this.btnAddText_Click);
// btnLoadSignature
this.btnLoadSignature.Location = new System.Drawing.Point(20, 120);
this.btnLoadSignature.Name = "btnLoadSignature";
this.btnLoadSignature.Size = new System.Drawing.Size(90, 25);
this.btnLoadSignature.TabIndex = 7;
this.btnLoadSignature.Text = "加载签名";
this.btnLoadSignature.Click += new System.EventHandler(this.btnLoadSignature_Click);
// pictureBoxSignature
this.pictureBoxSignature.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.pictureBoxSignature.Location = new System.Drawing.Point(120, 120);
this.pictureBoxSignature.Name = "pictureBoxSignature";
this.pictureBoxSignature.Size = new System.Drawing.Size(100, 50);
this.pictureBoxSignature.TabIndex = 8;
this.pictureBoxSignature.TabStop = false;
// btnAddSignature
this.btnAddSignature.Location = new System.Drawing.Point(230, 120);
this.btnAddSignature.Name = "btnAddSignature";
this.btnAddSignature.Size = new System.Drawing.Size(75, 25);
this.btnAddSignature.TabIndex = 9;
this.btnAddSignature.Text = "添加签名";
this.btnAddSignature.Click += new System.EventHandler(this.btnAddSignature_Click);
// btnCaptureSignature
this.btnCaptureSignature.Location = new System.Drawing.Point(20, 155);
this.btnCaptureSignature.Name = "btnCaptureSignature";
this.btnCaptureSignature.Size = new System.Drawing.Size(90, 25);
this.btnCaptureSignature.TabIndex = 10;
this.btnCaptureSignature.Text = "手写签名";
this.btnCaptureSignature.Click += new System.EventHandler(this.btnCaptureSignature_Click);
// btnSave
this.btnSave.Location = new System.Drawing.Point(300, 155);
this.btnSave.Name = "btnSave";
this.btnSave.Size = new System.Drawing.Size(75, 25);
this.btnSave.TabIndex = 11;
this.btnSave.Text = "保存文档";
this.btnSave.Click += new System.EventHandler(this.btnSave_Click);
// AnnotationForm
this.ClientSize = new System.Drawing.Size(400, 200);
this.Controls.Add(this.btnSave);
this.Controls.Add(this.btnCaptureSignature);
this.Controls.Add(this.btnAddSignature);
this.Controls.Add(this.pictureBoxSignature);
this.Controls.Add(this.btnLoadSignature);
this.Controls.Add(this.btnAddText);
this.Controls.Add(this.txtAnnotationText);
this.Controls.Add(this.label1);
this.Controls.Add(this.numericPageNumber);
this.Controls.Add(this.lblPageInfo);
this.Controls.Add(this.btnSelectFile);
this.Controls.Add(this.lblFileName);
this.Name = "AnnotationForm";
this.Text = "PDF标注工具";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
((System.ComponentModel.ISupportInitialize)(this.numericPageNumber)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.pictureBoxSignature)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
private void btnSelectFile_Click(object sender, EventArgs e)
{
using (OpenFileDialog openFileDialog = new OpenFileDialog())
{
openFileDialog.Filter = "PDF文件|*.pdf";
openFileDialog.Title = "选择要标注的PDF文件";
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
pdfFilePath = openFileDialog.FileName;
lblFileName.Text = "文件: " + System.IO.Path.GetFileName(pdfFilePath);
LoadPdfPreview();
}
}
}
private void LoadPdfPreview()
{
try
{
using (PdfReader reader = new PdfReader(pdfFilePath))
{
lblPageInfo.Text = "总页数: " + reader.NumberOfPages;
numericPageNumber.Maximum = reader.NumberOfPages;
numericPageNumber.Value = 1;
numericPageNumber.Enabled = true;
}
}
catch (Exception ex)
{
MessageBox.Show("读取PDF失败: " + ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void btnLoadSignature_Click(object sender, EventArgs e)
{
using (OpenFileDialog openFileDialog = new OpenFileDialog())
{
openFileDialog.Filter = "图片文件|*.png;*.jpg;*.bmp|所有文件|*.*";
openFileDialog.Title = "选择签名图片";
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
try
{
signatureBitmap = new Bitmap(openFileDialog.FileName);
pictureBoxSignature.Image = signatureBitmap;
MessageBox.Show("签名加载成功！", "成功", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show("加载签名失败: " + ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}
private void btnCaptureSignature_Click(object sender, EventArgs e)
{
SignatureCaptureForm captureForm = new SignatureCaptureForm();
if (captureForm.ShowDialog() == DialogResult.OK)
{
signatureBitmap = captureForm.GetSignature();
pictureBoxSignature.Image = signatureBitmap;
MessageBox.Show("手写签名已加载！", "成功", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
private void btnAddText_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(pdfFilePath))
{
MessageBox.Show("请先选择PDF文件", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
if (string.IsNullOrEmpty(txtAnnotationText.Text))
{
MessageBox.Show("请输入标注文本", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
AddTextAnnotation(txtAnnotationText.Text, (int)numericPageNumber.Value);
}
private void btnAddSignature_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(pdfFilePath))
{
MessageBox.Show("请先选择PDF文件", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
if (signatureBitmap == null)
{
MessageBox.Show("请先加载或创建签名", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
// 使用固定位置（右下角）
AddSignatureAnnotation((int)numericPageNumber.Value, new Point(400, 50));
}
private void btnSave_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(pdfFilePath))
{
MessageBox.Show("请先选择PDF文件", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
// 检查是否进行了任何标注
if (string.IsNullOrEmpty(txtAnnotationText.Text) && signatureBitmap == null)
{
MessageBox.Show("请先添加文本标注或签名", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
using (SaveFileDialog saveDialog = new SaveFileDialog())
{
saveDialog.Filter = "PDF文件|*.pdf";
saveDialog.FileName = System.IO.Path.GetFileNameWithoutExtension(pdfFilePath) + "_annotated.pdf";
saveDialog.Title = "保存标注后的PDF";
if (saveDialog.ShowDialog() == DialogResult.OK)
{
try
{
// 创建标注后的PDF
CreateAnnotatedPdf(saveDialog.FileName);
MessageBox.Show("PDF保存成功！", "成功", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show("保存失败: " + ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}
private void CreateAnnotatedPdf(string outputPath)
{
using (FileStream fs = new FileStream(outputPath, FileMode.Create))
using (PdfReader reader = new PdfReader(pdfFilePath))
using (PdfStamper stamper = new PdfStamper(reader, fs))
{
// 添加文本标注
if (!string.IsNullOrEmpty(txtAnnotationText.Text))
{
PdfContentByte canvas = stamper.GetOverContent((int)numericPageNumber.Value);
BaseFont baseFont = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
canvas.SetFontAndSize(baseFont, 12);
canvas.SetRGBColorFill(255, 0, 0);
canvas.BeginText();
canvas.ShowTextAligned(PdfContentByte.ALIGN_LEFT, txtAnnotationText.Text, 50, 700, 0);
canvas.EndText();
}
// 添加签名
if (signatureBitmap != null)
{
PdfContentByte canvas = stamper.GetOverContent((int)numericPageNumber.Value);
MemoryStream ms = new MemoryStream();
signatureBitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
iTextSharp.text.Image signatureImage = iTextSharp.text.Image.GetInstance(ms.GetBuffer());
signatureImage.ScaleToFit(150, 80);
signatureImage.SetAbsolutePosition(400, 50);
canvas.AddImage(signatureImage);
}
stamper.Close();
}
}
private void AddTextAnnotation(string text, int pageNumber)
{
try
{
string tempPath = System.IO.Path.GetTempFileName() + ".pdf";
CreateAnnotatedPdf(tempPath);
// 替换原文件
File.Copy(tempPath, pdfFilePath, true);
File.Delete(tempPath);
MessageBox.Show("文本标注添加成功！", "成功", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show("添加标注失败: " + ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void AddSignatureAnnotation(int pageNumber, Point position)
{
try
{
string tempPath = System.IO.Path.GetTempFileName() + ".pdf";
CreateAnnotatedPdf(tempPath);
// 替换原文件
File.Copy(tempPath, pdfFilePath, true);
File.Delete(tempPath);
MessageBox.Show("签名添加成功！", "成功", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show("添加签名失败: " + ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}DrawingPanelForm.cs
using System;
using System.Drawing;
using System.Windows.Forms;
namespace PDFTools
{
public partial class DrawingPanelForm : Form
{
private Bitmap drawingBitmap;
private Point previousPoint;
private bool isDrawing = false;
private Pen currentPen = new Pen(Color.Red, 2);
private System.ComponentModel.IContainer components = null;
private PictureBox pictureBoxDraw;
private Button btnColorRed;
private Button btnColorBlue;
private Button btnColorGreen;
private Button btnColorBlack;
private Button btnClear;
private Button btnSave;
private Button btnCancel;
public DrawingPanelForm()
{
InitializeComponent();
currentPen.StartCap = System.Drawing.Drawing2D.LineCap.Round;
currentPen.EndCap = System.Drawing.Drawing2D.LineCap.Round;
drawingBitmap = new Bitmap(pictureBoxDraw.Width, pictureBoxDraw.Height);
ClearCanvas();
}
private void InitializeComponent()
{
this.pictureBoxDraw = new System.Windows.Forms.PictureBox();
this.btnColorRed = new System.Windows.Forms.Button();
this.btnColorBlue = new System.Windows.Forms.Button();
this.btnColorGreen = new System.Windows.Forms.Button();
this.btnColorBlack = new System.Windows.Forms.Button();
this.btnClear = new System.Windows.Forms.Button();
this.btnSave = new System.Windows.Forms.Button();
this.btnCancel = new System.Windows.Forms.Button();
((System.ComponentModel.ISupportInitialize)(this.pictureBoxDraw)).BeginInit();
this.SuspendLayout();
// pictureBoxDraw
this.pictureBoxDraw.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.pictureBoxDraw.Location = new System.Drawing.Point(20, 20);
this.pictureBoxDraw.Name = "pictureBoxDraw";
this.pictureBoxDraw.Size = new System.Drawing.Size(300, 150);
this.pictureBoxDraw.TabIndex = 0;
this.pictureBoxDraw.TabStop = false;
this.pictureBoxDraw.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pictureBoxDraw_MouseDown);
this.pictureBoxDraw.MouseMove += new System.Windows.Forms.MouseEventHandler(this.pictureBoxDraw_MouseMove);
this.pictureBoxDraw.MouseUp += new System.Windows.Forms.MouseEventHandler(this.pictureBoxDraw_MouseUp);
// btnColorRed
this.btnColorRed.BackColor = Color.Red;
this.btnColorRed.Location = new System.Drawing.Point(20, 180);
this.btnColorRed.Name = "btnColorRed";
this.btnColorRed.Size = new System.Drawing.Size(30, 25);
this.btnColorRed.TabIndex = 1;
this.btnColorRed.Click += new System.EventHandler(this.btnColorRed_Click);
// btnColorBlue
this.btnColorBlue.BackColor = Color.Blue;
this.btnColorBlue.Location = new System.Drawing.Point(60, 180);
this.btnColorBlue.Name = "btnColorBlue";
this.btnColorBlue.Size = new System.Drawing.Size(30, 25);
this.btnColorBlue.TabIndex = 2;
this.btnColorBlue.Click += new System.EventHandler(this.btnColorBlue_Click);
// btnColorGreen
this.btnColorGreen.BackColor = Color.Green;
this.btnColorGreen.Location = new System.Drawing.Point(100, 180);
this.btnColorGreen.Name = "btnColorGreen";
this.btnColorGreen.Size = new System.Drawing.Size(30, 25);
this.btnColorGreen.TabIndex = 3;
this.btnColorGreen.Click += new System.EventHandler(this.btnColorGreen_Click);
// btnColorBlack
this.btnColorBlack.BackColor = Color.Black;
this.btnColorBlack.ForeColor = Color.White;
this.btnColorBlack.Location = new System.Drawing.Point(140, 180);
this.btnColorBlack.Name = "btnColorBlack";
this.btnColorBlack.Size = new System.Drawing.Size(30, 25);
this.btnColorBlack.TabIndex = 4;
this.btnColorBlack.Click += new System.EventHandler(this.btnColorBlack_Click);
// btnClear
this.btnClear.Location = new System.Drawing.Point(180, 180);
this.btnClear.Name = "btnClear";
this.btnClear.Size = new System.Drawing.Size(50, 25);
this.btnClear.TabIndex = 5;
this.btnClear.Text = "清除";
this.btnClear.Click += new System.EventHandler(this.btnClear_Click);
// btnSave
this.btnSave.Location = new System.Drawing.Point(240, 180);
this.btnSave.Name = "btnSave";
this.btnSave.Size = new System.Drawing.Size(35, 25);
this.btnSave.TabIndex = 6;
this.btnSave.Text = "✓";
this.btnSave.Click += new System.EventHandler(this.btnSave_Click);
// btnCancel
this.btnCancel.Location = new System.Drawing.Point(285, 180);
this.btnCancel.Name = "btnCancel";
this.btnCancel.Size = new System.Drawing.Size(35, 25);
this.btnCancel.TabIndex = 7;
this.btnCancel.Text = "✗";
this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
// DrawingPanelForm
this.ClientSize = new System.Drawing.Size(340, 220);
this.Controls.Add(this.btnCancel);
this.Controls.Add(this.btnSave);
this.Controls.Add(this.btnClear);
this.Controls.Add(this.btnColorBlack);
this.Controls.Add(this.btnColorGreen);
this.Controls.Add(this.btnColorBlue);
this.Controls.Add(this.btnColorRed);
this.Controls.Add(this.pictureBoxDraw);
this.Name = "DrawingPanelForm";
this.Text = "绘图面板";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
((System.ComponentModel.ISupportInitialize)(this.pictureBoxDraw)).EndInit();
this.ResumeLayout(false);
}
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
public Bitmap GetDrawing()
{
return drawingBitmap;
}
private void ClearCanvas()
{
using (Graphics g = Graphics.FromImage(drawingBitmap))
{
g.Clear(Color.Transparent);
}
pictureBoxDraw.Image = drawingBitmap;
}
private void pictureBoxDraw_MouseDown(object sender, MouseEventArgs e)
{
isDrawing = true;
previousPoint = e.Location;
}
private void pictureBoxDraw_MouseMove(object sender, MouseEventArgs e)
{
if (isDrawing)
{
using (Graphics g = Graphics.FromImage(drawingBitmap))
{
g.DrawLine(currentPen, previousPoint, e.Location);
}
previousPoint = e.Location;
pictureBoxDraw.Invalidate();
}
}
private void pictureBoxDraw_MouseUp(object sender, MouseEventArgs e)
{
isDrawing = false;
}
private void btnColorRed_Click(object sender, EventArgs e)
{
currentPen.Color = Color.Red;
}
private void btnColorBlue_Click(object sender, EventArgs e)
{
currentPen.Color = Color.Blue;
}
private void btnColorGreen_Click(object sender, EventArgs e)
{
currentPen.Color = Color.Green;
}
private void btnColorBlack_Click(object sender, EventArgs e)
{
currentPen.Color = Color.Black;
}
private void btnClear_Click(object sender, EventArgs e)
{
ClearCanvas();
}
private void btnSave_Click(object sender, EventArgs e)
{
this.DialogResult = DialogResult.OK;
this.Close();
}
private void btnCancel_Click(object sender, EventArgs e)
{
this.DialogResult = DialogResult.Cancel;
this.Close();
}
}
}MergeForm.cs
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Windows.Forms;
using iTextSharp.text;
using iTextSharp.text.pdf;
using iTextSharp.text.pdf.parser;
namespace PDFTools
{
public partial class MergeForm : Form
{
private List<string> selectedFiles = new List<string>();
private Dictionary<string, List<int>> filePageNumbers = new Dictionary<string, List<int>>();
public MergeForm()
{
InitializeComponent();
}
public void AddFile(string filePath)
{
if (File.Exists(filePath) && !selectedFiles.Contains(filePath))
{
selectedFiles.Add(filePath);
UpdateFileList();
LoadPageNumbers();
}
}
private void UpdateFileList()
{
lstFiles.Items.Clear();
foreach (string file in selectedFiles)
{
string pageInfo = "";
if (filePageNumbers.ContainsKey(file))
{
pageInfo = $" ({filePageNumbers[file].Count}页)";
}
lstFiles.Items.Add(System.IO.Path.GetFileName(file) + pageInfo);
}
}
private void LoadPageNumbers()
{
filePageNumbers.Clear();
foreach (string file in selectedFiles)
{
try
{
List<int> pageNumbers = ExtractPageNumbersFromPdf(file);
filePageNumbers[file] = pageNumbers;
}
catch (Exception ex)
{
MessageBox.Show($"读取文件 {System.IO.Path.GetFileName(file)} 的页码失败: {ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
private List<int> ExtractPageNumbersFromPdf(string filePath)
{
List<int> pageNumbers = new List<int>();
using (PdfReader reader = new PdfReader(filePath))
{
int totalPages = reader.NumberOfPages;
for (int i = 1; i <= totalPages; i++)
{
int pageNumber = ExtractPageNumber(reader, i);
pageNumbers.Add(pageNumber);
}
}
return pageNumbers;
}
private int ExtractPageNumber(PdfReader reader, int pageIndex)
{
try
{
// 方法1: 从页面元数据获取页码
int pageNumberFromMetadata = TryExtractPageNumberFromMetadata(reader, pageIndex);
if (pageNumberFromMetadata > 0)
{
return pageNumberFromMetadata;
}
// 方法2: 从页面内容文本中提取页码
int pageNumberFromContent = ExtractPageNumberFromContent(reader, pageIndex);
if (pageNumberFromContent > 0)
{
return pageNumberFromContent;
}
// 方法3: 从书签中获取页码信息
int pageNumberFromBookmarks = GetPageNumberFromBookmarks(reader, pageIndex);
if (pageNumberFromBookmarks > 0)
{
return pageNumberFromBookmarks;
}
// 方法4: 使用顺序页码作为后备
return pageIndex;
}
catch
{
return pageIndex;
}
}
private int TryExtractPageNumberFromMetadata(PdfReader reader, int pageIndex)
{
try
{
// 尝试从文档信息中获取页码
PdfDictionary pageDict = reader.GetPageN(pageIndex);
if (pageDict != null)
{
// 检查常见的页码存储字段
string[] possiblePageNumberFields = { "PageNumber", "P", "Page", "PageNo", "PageIndex" };
foreach (string field in possiblePageNumberFields)
{
PdfObject numberObj = pageDict.Get(new PdfName(field));
if (numberObj != null && numberObj.IsNumber())
{
return ((PdfNumber)numberObj).IntValue;
}
}
}
}
catch
{
// 忽略错误
}
return -1;
}
private int ExtractPageNumberFromContent(PdfReader reader, int pageIndex)
{
try
{
// 提取页面文本内容
string pageText = ExtractTextFromPage(reader, pageIndex);
if (!string.IsNullOrEmpty(pageText))
{
// 在文本中查找页码模式
var matches = System.Text.RegularExpressions.Regex.Matches(pageText, @"\b(\d{1,3})\b");
foreach (System.Text.RegularExpressions.Match match in matches)
{
if (int.TryParse(match.Value, out int number))
{
// 简单的启发式规则：页码通常在1到500之间
if (number > 0 && number < 500)
{
return number;
}
}
}
// 查找页眉页脚中的页码
var footerMatches = System.Text.RegularExpressions.Regex.Matches(pageText, @"第\s*(\d+)\s*页");
foreach (System.Text.RegularExpressions.Match match in footerMatches)
{
if (match.Groups.Count > 1 && int.TryParse(match.Groups[1].Value, out int number))
{
return number;
}
}
}
}
catch
{
// 忽略错误
}
return -1;
}
private string ExtractTextFromPage(PdfReader reader, int pageIndex)
{
try
{
// 使用iTextSharp提取文本
return PdfTextExtractor.GetTextFromPage(reader, pageIndex);
}
catch
{
return string.Empty;
}
}
private int GetPageNumberFromBookmarks(PdfReader reader, int pageIndex)
{
try
{
// 获取书签列表
IList<Dictionary<string, object>> bookmarks = SimpleBookmark.GetBookmark(reader);
if (bookmarks != null)
{
foreach (var bookmark in bookmarks)
{
if (bookmark.ContainsKey("Page"))
{
string pageRef = bookmark["Page"].ToString();
if (pageRef.Contains($" {pageIndex} "))
{
if (bookmark.ContainsKey("Title") &&
int.TryParse(bookmark["Title"].ToString(), out int pageNumber))
{
return pageNumber;
}
}
}
}
}
}
catch
{
// 忽略错误
}
return -1;
}
private void btnSelectFiles_Click(object sender, EventArgs e)
{
using (OpenFileDialog openFileDialog = new OpenFileDialog())
{
openFileDialog.Filter = "PDF文件|*.pdf";
openFileDialog.Multiselect = true;
openFileDialog.Title = "选择要合并的PDF文件";
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
selectedFiles.AddRange(openFileDialog.FileNames);
UpdateFileList();
LoadPageNumbers();
}
}
}
private void btnRemoveSelected_Click(object sender, EventArgs e)
{
if (lstFiles.SelectedIndex != -1)
{
selectedFiles.RemoveAt(lstFiles.SelectedIndex);
UpdateFileList();
LoadPageNumbers();
}
}
private void btnClearAll_Click(object sender, EventArgs e)
{
selectedFiles.Clear();
filePageNumbers.Clear();
UpdateFileList();
}
private void btnMoveUp_Click(object sender, EventArgs e)
{
if (lstFiles.SelectedIndex > 0)
{
int selectedIndex = lstFiles.SelectedIndex;
string temp = selectedFiles[selectedIndex];
selectedFiles[selectedIndex] = selectedFiles[selectedIndex - 1];
selectedFiles[selectedIndex - 1] = temp;
UpdateFileList();
lstFiles.SelectedIndex = selectedIndex - 1;
LoadPageNumbers();
}
}
private void btnMoveDown_Click(object sender, EventArgs e)
{
if (lstFiles.SelectedIndex != -1 && lstFiles.SelectedIndex < selectedFiles.Count - 1)
{
int selectedIndex = lstFiles.SelectedIndex;
string temp = selectedFiles[selectedIndex];
selectedFiles[selectedIndex] = selectedFiles[selectedIndex + 1];
selectedFiles[selectedIndex + 1] = temp;
UpdateFileList();
lstFiles.SelectedIndex = selectedIndex + 1;
LoadPageNumbers();
}
}
private void btnMerge_Click(object sender, EventArgs e)
{
if (selectedFiles.Count < 2)
{
MessageBox.Show("请至少选择两个PDF文件进行合并", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
if (string.IsNullOrEmpty(txtOutputFileName.Text))
{
MessageBox.Show("请输入输出文件名", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
// 选择合并方式
using (var mergeOptionForm = new MergeOptionForm())
{
if (mergeOptionForm.ShowDialog() == DialogResult.OK)
{
using (SaveFileDialog saveFileDialog = new SaveFileDialog())
{
saveFileDialog.Filter = "PDF文件|*.pdf";
saveFileDialog.FileName = txtOutputFileName.Text;
saveFileDialog.Title = "选择输出位置";
if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
try
{
if (mergeOptionForm.MergeByPageOrder)
{
MergePdfFilesByPageOrder(selectedFiles, saveFileDialog.FileName);
}
else
{
MergePdfFiles(selectedFiles, saveFileDialog.FileName);
}
MessageBox.Show("PDF合并完成！", "成功", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show("合并失败: " + ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}
}
}
// 原有的简单合并方法（按文件顺序）
private void MergePdfFiles(List<string> inputFiles, string outputFile)
{
int totalPages = 0;
using (Document document = new Document())
using (FileStream fs = new FileStream(outputFile, FileMode.Create))
using (PdfCopy copy = new PdfCopy(document, fs))
{
document.Open();
foreach (string file in inputFiles)
{
if (!File.Exists(file))
{
throw new FileNotFoundException("文件不存在: " + file);
}
using (PdfReader reader = new PdfReader(file))
{
int pageCount = reader.NumberOfPages;
totalPages += pageCount;
for (int i = 1; i <= pageCount; i++)
{
copy.AddPage(copy.GetImportedPage(reader, i));
}
}
}
document.Close();
}
}
// 新的按页码合并方法
private void MergePdfFilesByPageOrder(List<string> inputFiles, string outputFile)
{
// 获取所有页面的信息
var allPages = new List<(string file, int actualPageNumber, int physicalPageIndex)>();
foreach (string file in inputFiles)
{
if (filePageNumbers.ContainsKey(file))
{
var pageNumbers = filePageNumbers[file];
for (int i = 0; i < pageNumbers.Count; i++)
{
allPages.Add((file, pageNumbers[i], i + 1)); // i+1 是物理页码
}
}
}
// 按实际页码排序
var sortedPages = allPages.OrderBy(p => p.actualPageNumber).ToList();
using (Document document = new Document())
using (FileStream fs = new FileStream(outputFile, FileMode.Create))
using (PdfCopy copy = new PdfCopy(document, fs))
{
document.Open();
foreach (var pageInfo in sortedPages)
{
using (PdfReader reader = new PdfReader(pageInfo.file))
{
copy.AddPage(copy.GetImportedPage(reader, pageInfo.physicalPageIndex));
}
}
document.Close();
}
}
private void btnPreview_Click(object sender, EventArgs e)
{
if (lstFiles.SelectedIndex >= 0 && lstFiles.SelectedIndex < selectedFiles.Count)
{
OpenPdfWithDefaultProgram(selectedFiles[lstFiles.SelectedIndex]);
}
else if (selectedFiles.Count > 0)
{
OpenPdfWithDefaultProgram(selectedFiles[0]);
}
else
{
MessageBox.Show("请先选择PDF文件", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
private void OpenPdfWithDefaultProgram(string filePath)
{
try
{
System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo
{
FileName = filePath,
UseShellExecute = true
});
}
catch (Exception ex)
{
MessageBox.Show("无法打开文件: " + ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void lstFiles_SelectedIndexChanged(object sender, EventArgs e)
{
// 可以在这里添加选中文件时的处理逻辑
}
}
}MergeForm.Designer.cs
namespace PDFTools
{
partial class MergeForm
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要修改
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.btnSelectFiles = new System.Windows.Forms.Button();
this.btnPreview = new System.Windows.Forms.Button();
this.lstFiles = new System.Windows.Forms.ListBox();
this.btnRemoveSelected = new System.Windows.Forms.Button();
this.btnClearAll = new System.Windows.Forms.Button();
this.btnMoveUp = new System.Windows.Forms.Button();
this.btnMoveDown = new System.Windows.Forms.Button();
this.label1 = new System.Windows.Forms.Label();
this.txtOutputFileName = new System.Windows.Forms.TextBox();
this.btnMerge = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// btnSelectFiles
//
this.btnSelectFiles.Location = new System.Drawing.Point(20, 20);
this.btnSelectFiles.Name = "btnSelectFiles";
this.btnSelectFiles.Size = new System.Drawing.Size(120, 30);
this.btnSelectFiles.TabIndex = 0;
this.btnSelectFiles.Text = "选择PDF文件";
this.btnSelectFiles.UseVisualStyleBackColor = true;
this.btnSelectFiles.Click += new System.EventHandler(this.btnSelectFiles_Click);
//
// btnPreview
//
this.btnPreview.Location = new System.Drawing.Point(150, 20);
this.btnPreview.Name = "btnPreview";
this.btnPreview.Size = new System.Drawing.Size(120, 30);
this.btnPreview.TabIndex = 1;
this.btnPreview.Text = "打开PDF文件";
this.btnPreview.UseVisualStyleBackColor = true;
this.btnPreview.Click += new System.EventHandler(this.btnPreview_Click);
//
// lstFiles
//
this.lstFiles.FormattingEnabled = true;
this.lstFiles.ItemHeight = 12;
this.lstFiles.Location = new System.Drawing.Point(20, 60);
this.lstFiles.Name = "lstFiles";
this.lstFiles.Size = new System.Drawing.Size(250, 160);
this.lstFiles.TabIndex = 2;
this.lstFiles.SelectedIndexChanged += new System.EventHandler(this.lstFiles_SelectedIndexChanged);
//
// btnRemoveSelected
//
this.btnRemoveSelected.Location = new System.Drawing.Point(280, 60);
this.btnRemoveSelected.Name = "btnRemoveSelected";
this.btnRemoveSelected.Size = new System.Drawing.Size(80, 30);
this.btnRemoveSelected.TabIndex = 3;
this.btnRemoveSelected.Text = "删除选中";
this.btnRemoveSelected.UseVisualStyleBackColor = true;
this.btnRemoveSelected.Click += new System.EventHandler(this.btnRemoveSelected_Click);
//
// btnClearAll
//
this.btnClearAll.Location = new System.Drawing.Point(280, 100);
this.btnClearAll.Name = "btnClearAll";
this.btnClearAll.Size = new System.Drawing.Size(80, 30);
this.btnClearAll.TabIndex = 4;
this.btnClearAll.Text = "清空列表";
this.btnClearAll.UseVisualStyleBackColor = true;
this.btnClearAll.Click += new System.EventHandler(this.btnClearAll_Click);
//
// btnMoveUp
//
this.btnMoveUp.Location = new System.Drawing.Point(280, 140);
this.btnMoveUp.Name = "btnMoveUp";
this.btnMoveUp.Size = new System.Drawing.Size(80, 30);
this.btnMoveUp.TabIndex = 5;
this.btnMoveUp.Text = "上移";
this.btnMoveUp.UseVisualStyleBackColor = true;
this.btnMoveUp.Click += new System.EventHandler(this.btnMoveUp_Click);
//
// btnMoveDown
//
this.btnMoveDown.Location = new System.Drawing.Point(280, 180);
this.btnMoveDown.Name = "btnMoveDown";
this.btnMoveDown.Size = new System.Drawing.Size(80, 30);
this.btnMoveDown.TabIndex = 6;
this.btnMoveDown.Text = "下移";
this.btnMoveDown.UseVisualStyleBackColor = true;
this.btnMoveDown.Click += new System.EventHandler(this.btnMoveDown_Click);
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(20, 230);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(89, 12);
this.label1.TabIndex = 7;
this.label1.Text = "输出文件名:";
//
// txtOutputFileName
//
this.txtOutputFileName.Location = new System.Drawing.Point(115, 227);
this.txtOutputFileName.Name = "txtOutputFileName";
this.txtOutputFileName.Size = new System.Drawing.Size(155, 21);
this.txtOutputFileName.TabIndex = 8;
this.txtOutputFileName.Text = "merged_document";
//
// btnMerge
//
this.btnMerge.Location = new System.Drawing.Point(280, 225);
this.btnMerge.Name = "btnMerge";
this.btnMerge.Size = new System.Drawing.Size(80, 30);
this.btnMerge.TabIndex = 9;
this.btnMerge.Text = "开始合并";
this.btnMerge.UseVisualStyleBackColor = true;
this.btnMerge.Click += new System.EventHandler(this.btnMerge_Click);
//
// MergeForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(380, 280);
this.Controls.Add(this.btnMerge);
this.Controls.Add(this.txtOutputFileName);
this.Controls.Add(this.label1);
this.Controls.Add(this.btnMoveDown);
this.Controls.Add(this.btnMoveUp);
this.Controls.Add(this.btnClearAll);
this.Controls.Add(this.btnRemoveSelected);
this.Controls.Add(this.lstFiles);
this.Controls.Add(this.btnPreview);
this.Controls.Add(this.btnSelectFiles);
this.Name = "MergeForm";
this.Text = "PDF合并";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.Button btnSelectFiles;
private System.Windows.Forms.Button btnPreview;
private System.Windows.Forms.ListBox lstFiles;
private System.Windows.Forms.Button btnRemoveSelected;
private System.Windows.Forms.Button btnClearAll;
private System.Windows.Forms.Button btnMoveUp;
private System.Windows.Forms.Button btnMoveDown;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox txtOutputFileName;
private System.Windows.Forms.Button btnMerge;
}
}MergeOptionForm.cs
using System;
using System.Windows.Forms;
namespace PDFTools
{
public partial class MergeOptionForm : Form
{
// 使用字段而不是自动属性
private bool mergeByPageOrder = false;
public bool MergeByPageOrder
{
get { return mergeByPageOrder; }
}
private RadioButton rbFileOrder;
private RadioButton rbPageOrder;
private Button btnOK;
private Button btnCancel;
private Label label1;
public MergeOptionForm()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.rbFileOrder = new System.Windows.Forms.RadioButton();
this.rbPageOrder = new System.Windows.Forms.RadioButton();
this.btnOK = new System.Windows.Forms.Button();
this.btnCancel = new System.Windows.Forms.Button();
this.label1 = new System.Windows.Forms.Label();
this.SuspendLayout();
// rbFileOrder
this.rbFileOrder.AutoSize = true;
this.rbFileOrder.Checked = true;
this.rbFileOrder.Location = new System.Drawing.Point(20, 50);
this.rbFileOrder.Name = "rbFileOrder";
this.rbFileOrder.Size = new System.Drawing.Size(191, 16);
this.rbFileOrder.TabIndex = 0;
this.rbFileOrder.TabStop = true;
this.rbFileOrder.Text = "按文件顺序合并（文件1→文件2）";
this.rbFileOrder.UseVisualStyleBackColor = true;
// rbPageOrder
this.rbPageOrder.AutoSize = true;
this.rbPageOrder.Location = new System.Drawing.Point(20, 80);
this.rbPageOrder.Name = "rbPageOrder";
this.rbPageOrder.Size = new System.Drawing.Size(239, 16);
this.rbPageOrder.TabIndex = 1;
this.rbPageOrder.Text = "按页码顺序合并（第1页→第2页→第3页）";
this.rbPageOrder.UseVisualStyleBackColor = true;
// btnOK
this.btnOK.Location = new System.Drawing.Point(70, 120);
this.btnOK.Name = "btnOK";
this.btnOK.Size = new System.Drawing.Size(75, 25);
this.btnOK.TabIndex = 2;
this.btnOK.Text = "确定";
this.btnOK.Click += new System.EventHandler(this.btnOK_Click);
// btnCancel
this.btnCancel.Location = new System.Drawing.Point(160, 120);
this.btnCancel.Name = "btnCancel";
this.btnCancel.Size = new System.Drawing.Size(75, 25);
this.btnCancel.TabIndex = 3;
this.btnCancel.Text = "取消";
this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
// label1
this.label1.AutoSize = true;
this.label1.Font = new System.Drawing.Font("微软雅黑", 10F, System.Drawing.FontStyle.Bold);
this.label1.Location = new System.Drawing.Point(20, 20);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(111, 19);
this.label1.TabIndex = 4;
this.label1.Text = "选择合并方式：";
// MergeOptionForm
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(300, 160);
this.Controls.Add(this.label1);
this.Controls.Add(this.btnCancel);
this.Controls.Add(this.btnOK);
this.Controls.Add(this.rbPageOrder);
this.Controls.Add(this.rbFileOrder);
this.Name = "MergeOptionForm";
this.Text = "合并选项";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
this.ResumeLayout(false);
this.PerformLayout();
}
private void btnOK_Click(object sender, EventArgs e)
{
mergeByPageOrder = rbPageOrder.Checked;
this.DialogResult = DialogResult.OK;
this.Close();
}
private void btnCancel_Click(object sender, EventArgs e)
{
this.DialogResult = DialogResult.Cancel;
this.Close();
}
}
}PdfPreviewForm.cs
using System;
using System.Diagnostics;
using System.IO;
using System.Windows.Forms;
namespace PDFTools
{
public partial class PdfPreviewForm : Form
{
private string pdfFilePath;
public PdfPreviewForm(string filePath)
{
InitializeComponent();
pdfFilePath = filePath;
this.Text = "PDF预览 - " + Path.GetFileName(filePath);
}
private void InitializeComponent()
{
this.btnOpenWithDefault = new System.Windows.Forms.Button();
this.lblInfo = new System.Windows.Forms.Label();
this.pictureBoxThumbnail = new System.Windows.Forms.PictureBox();
((System.ComponentModel.ISupportInitialize)(this.pictureBoxThumbnail)).BeginInit();
this.SuspendLayout();
// btnOpenWithDefault
this.btnOpenWithDefault.Location = new System.Drawing.Point(20, 20);
this.btnOpenWithDefault.Name = "btnOpenWithDefault";
this.btnOpenWithDefault.Size = new System.Drawing.Size(150, 30);
this.btnOpenWithDefault.TabIndex = 0;
this.btnOpenWithDefault.Text = "用默认程序打开";
this.btnOpenWithDefault.Click += new System.EventHandler(this.btnOpenWithDefault_Click);
// lblInfo
this.lblInfo.AutoSize = true;
this.lblInfo.Location = new System.Drawing.Point(20, 70);
this.lblInfo.Name = "lblInfo";
this.lblInfo.Size = new System.Drawing.Size(0, 12);
this.lblInfo.TabIndex = 1;
// pictureBoxThumbnail
this.pictureBoxThumbnail.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.pictureBoxThumbnail.Location = new System.Drawing.Point(20, 100);
this.pictureBoxThumbnail.Name = "pictureBoxThumbnail";
this.pictureBoxThumbnail.Size = new System.Drawing.Size(200, 200);
this.pictureBoxThumbnail.TabIndex = 2;
this.pictureBoxThumbnail.TabStop = false;
// PdfPreviewForm
this.ClientSize = new System.Drawing.Size(400, 350);
this.Controls.Add(this.pictureBoxThumbnail);
this.Controls.Add(this.lblInfo);
this.Controls.Add(this.btnOpenWithDefault);
this.Name = "PdfPreviewForm";
this.Text = "PDF预览";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Load += new System.EventHandler(this.PdfPreviewForm_Load);
((System.ComponentModel.ISupportInitialize)(this.pictureBoxThumbnail)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
private void PdfPreviewForm_Load(object sender, EventArgs e)
{
try
{
FileInfo fileInfo = new FileInfo(pdfFilePath);
lblInfo.Text = $"文件名: {fileInfo.Name}\n大小: {fileInfo.Length / 1024} KB\n创建时间: {fileInfo.CreationTime}";
// 创建简单的PDF图标
CreatePdfThumbnail();
}
catch (Exception ex)
{
lblInfo.Text = "无法获取文件信息: " + ex.Message;
}
}
private void CreatePdfThumbnail()
{
// 创建一个简单的PDF图标
using (System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(200, 200))
using (System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bmp))
{
g.Clear(System.Drawing.Color.White);
// 绘制PDF文档图标
g.DrawRectangle(System.Drawing.Pens.Black, 10, 10, 180, 180);
g.DrawLine(System.Drawing.Pens.Black, 10, 40, 190, 40);
g.DrawLine(System.Drawing.Pens.Black, 10, 70, 190, 70);
g.DrawLine(System.Drawing.Pens.Black, 10, 100, 190, 100);
// 绘制文字
g.DrawString("PDF文档", new System.Drawing.Font("Arial", 12), System.Drawing.Brushes.Black, 60, 150);
g.DrawString("预览", new System.Drawing.Font("Arial", 10), System.Drawing.Brushes.Blue, 80, 170);
pictureBoxThumbnail.Image = (System.Drawing.Image)bmp.Clone();
}
}
private void btnOpenWithDefault_Click(object sender, EventArgs e)
{
try
{
Process.Start(new ProcessStartInfo
{
FileName = pdfFilePath,
UseShellExecute = true
});
}
catch (Exception ex)
{
MessageBox.Show("无法打开文件: " + ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private System.Windows.Forms.Button btnOpenWithDefault;
private System.Windows.Forms.Label lblInfo;
private System.Windows.Forms.PictureBox pictureBoxThumbnail;
}
}PDFTools.csproj
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>WinExe</OutputType>
<TargetFramework>net9.0-windows</TargetFramework>
<Nullable>enable</Nullable>
<UseWindowsForms>true</UseWindowsForms>
<ImplicitUsings>enable</ImplicitUsings>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="iTextSharp" Version="5.5.13.4" />
<PackageReference Include="PdfiumViewer" Version="2.13.0" />
<PackageReference Include="System.Drawing.Common" Version="9.0.8" />
</ItemGroup>
</Project>PDFTools.csproj.user
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup>
<Compile Update="Form1.cs">
<SubType>Form</SubType>
</Compile>
</ItemGroup>
</Project>
Program.cs
using System;
using System.Windows.Forms;
namespace PDFTools
{
internal static class Program
{
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new MainForm());
}
}
}SignatureCaptureForm.cs
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.IO;
using System.Windows.Forms;
namespace PDFTools
{
public partial class SignatureCaptureForm : Form
{
private Bitmap signatureBitmap;
private Point previousPoint;
private bool isDrawing = false;
private Pen drawingPen = new Pen(Color.Black, 3);
public SignatureCaptureForm()
{
InitializeComponent();
drawingPen.StartCap = LineCap.Round;
drawingPen.EndCap = LineCap.Round;
signatureBitmap = new Bitmap(pictureBoxSignature.Width, pictureBoxSignature.Height);
ClearCanvas();
}
private void InitializeComponent()
{
this.pictureBoxSignature = new System.Windows.Forms.PictureBox();
this.btnClear = new System.Windows.Forms.Button();
this.btnSave = new System.Windows.Forms.Button();
this.btnCancel = new System.Windows.Forms.Button();
this.btnColorBlack = new System.Windows.Forms.Button();
this.btnColorBlue = new System.Windows.Forms.Button();
this.btnColorRed = new System.Windows.Forms.Button();
this.label1 = new System.Windows.Forms.Label();
((System.ComponentModel.ISupportInitialize)(this.pictureBoxSignature)).BeginInit();
this.SuspendLayout();
// pictureBoxSignature
this.pictureBoxSignature.BackColor = Color.White;
this.pictureBoxSignature.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.pictureBoxSignature.Location = new System.Drawing.Point(20, 40);
this.pictureBoxSignature.Name = "pictureBoxSignature";
this.pictureBoxSignature.Size = new System.Drawing.Size(400, 200);
this.pictureBoxSignature.TabIndex = 0;
this.pictureBoxSignature.TabStop = false;
this.pictureBoxSignature.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pictureBoxSignature_MouseDown);
this.pictureBoxSignature.MouseMove += new System.Windows.Forms.MouseEventHandler(this.pictureBoxSignature_MouseMove);
this.pictureBoxSignature.MouseUp += new System.Windows.Forms.MouseEventHandler(this.pictureBoxSignature_MouseUp);
// btnClear
this.btnClear.Location = new System.Drawing.Point(20, 250);
this.btnClear.Name = "btnClear";
this.btnClear.Size = new System.Drawing.Size(80, 30);
this.btnClear.TabIndex = 1;
this.btnClear.Text = "清除";
this.btnClear.Click += new System.EventHandler(this.btnClear_Click);
// btnSave
this.btnSave.Location = new System.Drawing.Point(180, 250);
this.btnSave.Name = "btnSave";
this.btnSave.Size = new System.Drawing.Size(80, 30);
this.btnSave.TabIndex = 2;
this.btnSave.Text = "保存";
this.btnSave.Click += new System.EventHandler(this.btnSave_Click);
// btnCancel
this.btnCancel.Location = new System.Drawing.Point(340, 250);
this.btnCancel.Name = "btnCancel";
this.btnCancel.Size = new System.Drawing.Size(80, 30);
this.btnCancel.TabIndex = 3;
this.btnCancel.Text = "取消";
this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
// btnColorBlack
this.btnColorBlack.BackColor = Color.Black;
this.btnColorBlack.ForeColor = Color.White;
this.btnColorBlack.Location = new System.Drawing.Point(20, 10);
this.btnColorBlack.Name = "btnColorBlack";
this.btnColorBlack.Size = new System.Drawing.Size(30, 25);
this.btnColorBlack.TabIndex = 4;
this.btnColorBlack.Text = "黑";
this.btnColorBlack.Click += new System.EventHandler(this.btnColorBlack_Click);
// btnColorBlue
this.btnColorBlue.BackColor = Color.Blue;
this.btnColorBlue.ForeColor = Color.White;
this.btnColorBlue.Location = new System.Drawing.Point(60, 10);
this.btnColorBlue.Name = "btnColorBlue";
this.btnColorBlue.Size = new System.Drawing.Size(30, 25);
this.btnColorBlue.TabIndex = 5;
this.btnColorBlue.Text = "蓝";
this.btnColorBlue.Click += new System.EventHandler(this.btnColorBlue_Click);
// btnColorRed
this.btnColorRed.BackColor = Color.Red;
this.btnColorRed.ForeColor = Color.White;
this.btnColorRed.Location = new System.Drawing.Point(100, 10);
this.btnColorRed.Name = "btnColorRed";
this.btnColorRed.Size = new System.Drawing.Size(30, 25);
this.btnColorRed.TabIndex = 6;
this.btnColorRed.Text = "红";
this.btnColorRed.Click += new System.EventHandler(this.btnColorRed_Click);
// label1
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(150, 15);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(149, 12);
this.label1.TabIndex = 7;
this.label1.Text = "请在下方区域手写签名：";
// SignatureCaptureForm
this.ClientSize = new System.Drawing.Size(440, 300);
this.Controls.Add(this.label1);
this.Controls.Add(this.btnColorRed);
this.Controls.Add(this.btnColorBlue);
this.Controls.Add(this.btnColorBlack);
this.Controls.Add(this.btnCancel);
this.Controls.Add(this.btnSave);
this.Controls.Add(this.btnClear);
this.Controls.Add(this.pictureBoxSignature);
this.Name = "SignatureCaptureForm";
this.Text = "手写签名";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
((System.ComponentModel.ISupportInitialize)(this.pictureBoxSignature)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
public Bitmap GetSignature()
{
return signatureBitmap;
}
public string SaveSignatureToFile()
{
using (SaveFileDialog saveDialog = new SaveFileDialog())
{
saveDialog.Filter = "PNG图片|*.png";
saveDialog.FileName = "signature_" + DateTime.Now.ToString("yyyyMMdd_HHmmss") + ".png";
saveDialog.Title = "保存签名";
if (saveDialog.ShowDialog() == DialogResult.OK)
{
signatureBitmap.Save(saveDialog.FileName, System.Drawing.Imaging.ImageFormat.Png);
return saveDialog.FileName;
}
}
return null;
}
private void ClearCanvas()
{
using (Graphics g = Graphics.FromImage(signatureBitmap))
{
g.Clear(Color.White);
}
pictureBoxSignature.Image = signatureBitmap;
}
private void pictureBoxSignature_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
isDrawing = true;
previousPoint = e.Location;
}
}
private void pictureBoxSignature_MouseMove(object sender, MouseEventArgs e)
{
if (isDrawing && e.Button == MouseButtons.Left)
{
using (Graphics g = Graphics.FromImage(signatureBitmap))
{
g.DrawLine(drawingPen, previousPoint, e.Location);
}
previousPoint = e.Location;
pictureBoxSignature.Invalidate();
}
}
private void pictureBoxSignature_MouseUp(object sender, MouseEventArgs e)
{
isDrawing = false;
}
private void btnClear_Click(object sender, EventArgs e)
{
ClearCanvas();
}
private void btnSave_Click(object sender, EventArgs e)
{
// 检查是否有签名内容
if (IsCanvasEmpty())
{
MessageBox.Show("请先书写签名", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
string savedPath = SaveSignatureToFile();
if (!string.IsNullOrEmpty(savedPath))
{
MessageBox.Show("签名保存成功！", "成功", MessageBoxButtons.OK, MessageBoxIcon.Information);
this.DialogResult = DialogResult.OK;
this.Close();
}
}
private void btnCancel_Click(object sender, EventArgs e)
{
this.DialogResult = DialogResult.Cancel;
this.Close();
}
private bool IsCanvasEmpty()
{
// 检查画布是否为空（只有白色）
for (int x = 0; x < signatureBitmap.Width; x++)
{
for (int y = 0; y < signatureBitmap.Height; y++)
{
if (signatureBitmap.GetPixel(x, y).ToArgb() != Color.White.ToArgb())
{
return false;
}
}
}
return true;
}
private void btnColorBlack_Click(object sender, EventArgs e)
{
drawingPen.Color = Color.Black;
}
private void btnColorBlue_Click(object sender, EventArgs e)
{
drawingPen.Color = Color.Blue;
}
private void btnColorRed_Click(object sender, EventArgs e)
{
drawingPen.Color = Color.Red;
}
private System.Windows.Forms.PictureBox pictureBoxSignature;
private System.Windows.Forms.Button btnClear;
private System.Windows.Forms.Button btnSave;
private System.Windows.Forms.Button btnCancel;
private System.Windows.Forms.Button btnColorBlack;
private System.Windows.Forms.Button btnColorBlue;
private System.Windows.Forms.Button btnColorRed;
private System.Windows.Forms.Label label1;
}
}SignaturePositionForm.cs
using System;
using System.Drawing;
using System.Windows.Forms;
namespace PDFTools
{
public partial class SignaturePositionForm : Form
{
// 使用字段而不是自动属性
private Point selectedPosition = new Point(50, 50);
public Point SelectedPosition
{
get { return selectedPosition; }
}
private TrackBar trackBarX;
private TrackBar trackBarY;
private Label labelX;
private Label labelY;
private Label labelValueX;
private Label labelValueY;
private Button btnOK;
private Button btnCancel;
public SignaturePositionForm()
{
InitializeComponent();
UpdatePositionLabels();
}
private void InitializeComponent()
{
this.trackBarX = new System.Windows.Forms.TrackBar();
this.trackBarY = new System.Windows.Forms.TrackBar();
this.labelX = new System.Windows.Forms.Label();
this.labelY = new System.Windows.Forms.Label();
this.labelValueX = new System.Windows.Forms.Label();
this.labelValueY = new System.Windows.Forms.Label();
this.btnOK = new System.Windows.Forms.Button();
this.btnCancel = new System.Windows.Forms.Button();
((System.ComponentModel.ISupportInitialize)(this.trackBarX)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.trackBarY)).BeginInit();
this.SuspendLayout();
// trackBarX (X坐标滑动条)
this.trackBarX.Location = new System.Drawing.Point(50, 20);
this.trackBarX.Minimum = 10;
this.trackBarX.Maximum = 500;
this.trackBarX.Name = "trackBarX";
this.trackBarX.Size = new System.Drawing.Size(200, 45);
this.trackBarX.TabIndex = 0;
this.trackBarX.Value = 50;
this.trackBarX.Scroll += new System.EventHandler(this.trackBar_Scroll);
// trackBarY (Y坐标滑动条)
this.trackBarY.Location = new System.Drawing.Point(50, 70);
this.trackBarY.Minimum = 10;
this.trackBarY.Maximum = 800;
this.trackBarY.Name = "trackBarY";
this.trackBarY.Size = new System.Drawing.Size(200, 45);
this.trackBarY.TabIndex = 1;
this.trackBarY.Value = 50;
this.trackBarY.Scroll += new System.EventHandler(this.trackBar_Scroll);
// labelX
this.labelX.AutoSize = true;
this.labelX.Location = new System.Drawing.Point(20, 25);
this.labelX.Name = "labelX";
this.labelX.Size = new System.Drawing.Size(23, 12);
this.labelX.TabIndex = 2;
this.labelX.Text = "X:";
// labelY
this.labelY.AutoSize = true;
this.labelY.Location = new System.Drawing.Point(20, 75);
this.labelY.Name = "labelY";
this.labelY.Size = new System.Drawing.Size(23, 12);
this.labelY.TabIndex = 3;
this.labelY.Text = "Y:";
// labelValueX
this.labelValueX.AutoSize = true;
this.labelValueX.Location = new System.Drawing.Point(260, 25);
this.labelValueX.Name = "labelValueX";
this.labelValueX.Size = new System.Drawing.Size(29, 12);
this.labelValueX.TabIndex = 4;
this.labelValueX.Text = "50px";
// labelValueY
this.labelValueY.AutoSize = true;
this.labelValueY.Location = new System.Drawing.Point(260, 75);
this.labelValueY.Name = "labelValueY";
this.labelValueY.Size = new System.Drawing.Size(29, 12);
this.labelValueY.TabIndex = 5;
this.labelValueY.Text = "50px";
// btnOK
this.btnOK.Location = new System.Drawing.Point(70, 120);
this.btnOK.Name = "btnOK";
this.btnOK.Size = new System.Drawing.Size(75, 25);
this.btnOK.TabIndex = 6;
this.btnOK.Text = "确定";
this.btnOK.Click += new System.EventHandler(this.btnOK_Click);
// btnCancel
this.btnCancel.Location = new System.Drawing.Point(160, 120);
this.btnCancel.Name = "btnCancel";
this.btnCancel.Size = new System.Drawing.Size(75, 25);
this.btnCancel.TabIndex = 7;
this.btnCancel.Text = "取消";
this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
// SignaturePositionForm
this.ClientSize = new System.Drawing.Size(320, 160);
this.Controls.Add(this.btnCancel);
this.Controls.Add(this.btnOK);
this.Controls.Add(this.labelValueY);
this.Controls.Add(this.labelValueX);
this.Controls.Add(this.labelY);
this.Controls.Add(this.labelX);
this.Controls.Add(this.trackBarY);
this.Controls.Add(this.trackBarX);
this.Name = "SignaturePositionForm";
this.Text = "选择签名位置";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
((System.ComponentModel.ISupportInitialize)(this.trackBarX)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.trackBarY)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
private void trackBar_Scroll(object sender, EventArgs e)
{
selectedPosition = new Point(trackBarX.Value, trackBarY.Value);
UpdatePositionLabels();
}
private void UpdatePositionLabels()
{
labelValueX.Text = $"{trackBarX.Value}px";
labelValueY.Text = $"{trackBarY.Value}px";
}
private void btnOK_Click(object sender, EventArgs e)
{
this.DialogResult = DialogResult.OK;
this.Close();
}
private void btnCancel_Click(object sender, EventArgs e)
{
this.DialogResult = DialogResult.Cancel;
this.Close();
}
}
}SplitForm.cs
using System;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
using iTextSharp.text;
using iTextSharp.text.pdf;
namespace PDFTools
{
public partial class SplitForm : Form
{
private string selectedFilePath = "";
public SplitForm()
{
InitializeComponent();
}
private void btnSelectFile_Click(object sender, EventArgs e)
{
using (OpenFileDialog openFileDialog = new OpenFileDialog())
{
openFileDialog.Filter = "PDF文件|*.pdf";
openFileDialog.Title = "选择要切割的PDF文件";
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
selectedFilePath = openFileDialog.FileName;
lblFileName.Text = "已选择: " + System.IO.Path.GetFileName(selectedFilePath);
try
{
using (PdfReader reader = new PdfReader(selectedFilePath))
{
int totalPages = reader.NumberOfPages;
lblPageInfo.Text = "总页数: " + totalPages;
lblTotalPages.Text = totalPages.ToString();
// 设置结束页的默认值
txtEndPage.Text = totalPages.ToString();
}
}
catch (Exception ex)
{
MessageBox.Show("读取PDF文件失败: " + ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}
private void rbSinglePage_CheckedChanged(object sender, EventArgs e)
{
txtPagesPerFile.Enabled = false;
txtStartPage.Enabled = false;
txtEndPage.Enabled = false;
}
private void rbMultiPage_CheckedChanged(object sender, EventArgs e)
{
txtPagesPerFile.Enabled = rbMultiPage.Checked;
txtStartPage.Enabled = false;
txtEndPage.Enabled = false;
}
private void rbPageRange_CheckedChanged(object sender, EventArgs e)
{
txtPagesPerFile.Enabled = false;
txtStartPage.Enabled = rbPageRange.Checked;
txtEndPage.Enabled = rbPageRange.Checked;
}
private void btnSplit_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(selectedFilePath))
{
MessageBox.Show("请先选择PDF文件", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
if (!File.Exists(selectedFilePath))
{
MessageBox.Show("选择的文件不存在", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
using (FolderBrowserDialog folderDialog = new FolderBrowserDialog())
{
folderDialog.Description = "选择输出文件夹";
if (folderDialog.ShowDialog() == DialogResult.OK)
{
string outputFolder = folderDialog.SelectedPath;
try
{
if (rbSinglePage.Checked)
{
SplitIntoSinglePages(selectedFilePath, outputFolder);
}
else if (rbMultiPage.Checked)
{
if (!int.TryParse(txtPagesPerFile.Text, out int pagesPerFile) || pagesPerFile < 1)
{
MessageBox.Show("请输入有效的每份页数", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
SplitIntoMultiPages(selectedFilePath, outputFolder, pagesPerFile);
}
else if (rbPageRange.Checked)
{
if (!int.TryParse(txtStartPage.Text, out int startPage) ||
!int.TryParse(txtEndPage.Text, out int endPage) ||
startPage < 1 || endPage < startPage)
{
MessageBox.Show("请输入有效的页面范围", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
// 检查结束页是否超过总页数
int totalPages = int.Parse(lblTotalPages.Text);
if (endPage > totalPages)
{
MessageBox.Show($"结束页不能超过总页数 {totalPages}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
SplitPageRange(selectedFilePath, outputFolder, startPage, endPage);
}
MessageBox.Show("PDF切割完成！", "成功", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show("切割失败: " + ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}
private void SplitIntoSinglePages(string inputFile, string outputFolder)
{
using (PdfReader reader = new PdfReader(inputFile))
{
int totalPages = reader.NumberOfPages;
for (int i = 1; i <= totalPages; i++)
{
string outputFile = System.IO.Path.Combine(outputFolder, $"page_{i.ToString().PadLeft(4, '0')}.pdf");
using (Document document = new Document())
using (FileStream fs = new FileStream(outputFile, FileMode.Create))
using (PdfCopy copy = new PdfCopy(document, fs))
{
document.Open();
copy.AddPage(copy.GetImportedPage(reader, i));
document.Close();
}
}
}
}
private void SplitIntoMultiPages(string inputFile, string outputFolder, int pagesPerFile)
{
using (PdfReader reader = new PdfReader(inputFile))
{
int totalPages = reader.NumberOfPages;
int fileCount = (int)Math.Ceiling((double)totalPages / pagesPerFile);
for (int fileIndex = 0; fileIndex < fileCount; fileIndex++)
{
int startPage = fileIndex * pagesPerFile + 1;
int endPage = Math.Min((fileIndex + 1) * pagesPerFile, totalPages);
string outputFile = System.IO.Path.Combine(outputFolder, $"part_{(fileIndex + 1).ToString().PadLeft(3, '0')}_pages_{startPage}-{endPage}.pdf");
using (Document document = new Document())
using (FileStream fs = new FileStream(outputFile, FileMode.Create))
using (PdfCopy copy = new PdfCopy(document, fs))
{
document.Open();
for (int page = startPage; page <= endPage; page++)
{
copy.AddPage(copy.GetImportedPage(reader, page));
}
document.Close();
}
}
}
}
private void SplitPageRange(string inputFile, string outputFolder, int startPage, int endPage)
{
using (PdfReader reader = new PdfReader(inputFile))
{
int totalPages = reader.NumberOfPages;
// 验证页面范围
if (startPage < 1 || endPage > totalPages || startPage > endPage)
{
MessageBox.Show("无效的页面范围", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
string outputFile = System.IO.Path.Combine(outputFolder,
$"pages_{startPage}-{endPage}_{System.IO.Path.GetFileNameWithoutExtension(inputFile)}.pdf");
using (Document document = new Document())
using (FileStream fs = new FileStream(outputFile, FileMode.Create))
using (PdfCopy copy = new PdfCopy(document, fs))
{
document.Open();
for (int page = startPage; page <= endPage; page++)
{
copy.AddPage(copy.GetImportedPage(reader, page));
}
document.Close();
}
// 如果只切割一页，也创建一个单页文件
if (startPage == endPage)
{
string singlePageFile = System.IO.Path.Combine(outputFolder,
$"page_{startPage.ToString().PadLeft(4, '0')}.pdf");
using (Document document = new Document())
using (FileStream fs = new FileStream(singlePageFile, FileMode.Create))
using (PdfCopy copy = new PdfCopy(document, fs))
{
document.Open();
copy.AddPage(copy.GetImportedPage(reader, startPage));
document.Close();
}
}
}
}
}
}SplitForm.Designer.cs
namespace PDFTools
{
partial class SplitForm
{
private System.ComponentModel.IContainer components = null;
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
private void InitializeComponent()
{
this.lblFileName = new System.Windows.Forms.Label();
this.btnSelectFile = new System.Windows.Forms.Button();
this.lblPageInfo = new System.Windows.Forms.Label();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.rbPageRange = new System.Windows.Forms.RadioButton();
this.rbMultiPage = new System.Windows.Forms.RadioButton();
this.rbSinglePage = new System.Windows.Forms.RadioButton();
this.txtPagesPerFile = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.txtStartPage = new System.Windows.Forms.TextBox();
this.txtEndPage = new System.Windows.Forms.TextBox();
this.label2 = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.btnSplit = new System.Windows.Forms.Button();
this.lblTotalPages = new System.Windows.Forms.Label();
this.groupBox1.SuspendLayout();
this.SuspendLayout();
// lblFileName
this.lblFileName.AutoSize = true;
this.lblFileName.Location = new System.Drawing.Point(120, 25);
this.lblFileName.Name = "lblFileName";
this.lblFileName.Size = new System.Drawing.Size(77, 12);
this.lblFileName.TabIndex = 0;
this.lblFileName.Text = "未选择文件";
// btnSelectFile
this.btnSelectFile.Location = new System.Drawing.Point(20, 20);
this.btnSelectFile.Name = "btnSelectFile";
this.btnSelectFile.Size = new System.Drawing.Size(90, 25);
this.btnSelectFile.TabIndex = 1;
this.btnSelectFile.Text = "选择PDF文件";
this.btnSelectFile.Click += new System.EventHandler(this.btnSelectFile_Click);
// lblPageInfo
this.lblPageInfo.AutoSize = true;
this.lblPageInfo.Location = new System.Drawing.Point(20, 60);
this.lblPageInfo.Name = "lblPageInfo";
this.lblPageInfo.Size = new System.Drawing.Size(59, 12);
this.lblPageInfo.TabIndex = 2;
this.lblPageInfo.Text = "总页数: 0";
// groupBox1
this.groupBox1.Controls.Add(this.rbPageRange);
this.groupBox1.Controls.Add(this.rbMultiPage);
this.groupBox1.Controls.Add(this.rbSinglePage);
this.groupBox1.Location = new System.Drawing.Point(20, 90);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(350, 100);
this.groupBox1.TabIndex = 3;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "切割方式";
// rbPageRange
this.rbPageRange.AutoSize = true;
this.rbPageRange.Location = new System.Drawing.Point(20, 70);
this.rbPageRange.Name = "rbPageRange";
this.rbPageRange.Size = new System.Drawing.Size(95, 16);
this.rbPageRange.TabIndex = 2;
this.rbPageRange.Text = "指定页面范围";
this.rbPageRange.CheckedChanged += new System.EventHandler(this.rbPageRange_CheckedChanged);
// rbMultiPage
this.rbMultiPage.AutoSize = true;
this.rbMultiPage.Location = new System.Drawing.Point(20, 45);
this.rbMultiPage.Name = "rbMultiPage";
this.rbMultiPage.Size = new System.Drawing.Size(71, 16);
this.rbMultiPage.TabIndex = 1;
this.rbMultiPage.Text = "多页切割";
this.rbMultiPage.CheckedChanged += new System.EventHandler(this.rbMultiPage_CheckedChanged);
// rbSinglePage
this.rbSinglePage.AutoSize = true;
this.rbSinglePage.Checked = true;
this.rbSinglePage.Location = new System.Drawing.Point(20, 20);
this.rbSinglePage.Name = "rbSinglePage";
this.rbSinglePage.Size = new System.Drawing.Size(71, 16);
this.rbSinglePage.TabIndex = 0;
this.rbSinglePage.TabStop = true;
this.rbSinglePage.Text = "单页切割";
this.rbSinglePage.CheckedChanged += new System.EventHandler(this.rbSinglePage_CheckedChanged);
// txtPagesPerFile
this.txtPagesPerFile.Enabled = false;
this.txtPagesPerFile.Location = new System.Drawing.Point(120, 200);
this.txtPagesPerFile.Name = "txtPagesPerFile";
this.txtPagesPerFile.Size = new System.Drawing.Size(60, 21);
this.txtPagesPerFile.TabIndex = 4;
this.txtPagesPerFile.Text = "10";
// label1
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(25, 203);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(89, 12);
this.label1.TabIndex = 5;
this.label1.Text = "每份文件页数:";
// txtStartPage
this.txtStartPage.Enabled = false;
this.txtStartPage.Location = new System.Drawing.Point(120, 230);
this.txtStartPage.Name = "txtStartPage";
this.txtStartPage.Size = new System.Drawing.Size(60, 21);
this.txtStartPage.TabIndex = 6;
this.txtStartPage.Text = "1";
// txtEndPage
this.txtEndPage.Enabled = false;
this.txtEndPage.Location = new System.Drawing.Point(220, 230);
this.txtEndPage.Name = "txtEndPage";
this.txtEndPage.Size = new System.Drawing.Size(60, 21);
this.txtEndPage.TabIndex = 7;
this.txtEndPage.Text = "1";
// label2
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(25, 233);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(89, 12);
this.label2.TabIndex = 8;
this.label2.Text = "起始页-结束页:";
// label3
this.label3.AutoSize = true;
this.label3.Location = new System.Drawing.Point(190, 233);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(23, 12);
this.label3.TabIndex = 9;
this.label3.Text = "到";
// btnSplit
this.btnSplit.Location = new System.Drawing.Point(150, 270);
this.btnSplit.Name = "btnSplit";
this.btnSplit.Size = new System.Drawing.Size(100, 30);
this.btnSplit.TabIndex = 10;
this.btnSplit.Text = "开始切割";
this.btnSplit.Click += new System.EventHandler(this.btnSplit_Click);
// lblTotalPages
this.lblTotalPages.AutoSize = true;
this.lblTotalPages.Location = new System.Drawing.Point(120, 60);
this.lblTotalPages.Name = "lblTotalPages";
this.lblTotalPages.Size = new System.Drawing.Size(11, 12);
this.lblTotalPages.TabIndex = 11;
this.lblTotalPages.Text = "0";
// SplitForm
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(400, 320);
this.Controls.Add(this.lblTotalPages);
this.Controls.Add(this.btnSplit);
this.Controls.Add(this.label3);
this.Controls.Add(this.label2);
this.Controls.Add(this.txtEndPage);
this.Controls.Add(this.txtStartPage);
this.Controls.Add(this.label1);
this.Controls.Add(this.txtPagesPerFile);
this.Controls.Add(this.groupBox1);
this.Controls.Add(this.lblPageInfo);
this.Controls.Add(this.btnSelectFile);
this.Controls.Add(this.lblFileName);
this.Name = "SplitForm";
this.Text = "PDF切割";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.groupBox1.ResumeLayout(false);
this.groupBox1.PerformLayout();
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.Label lblFileName;
private System.Windows.Forms.Button btnSelectFile;
private System.Windows.Forms.Label lblPageInfo;
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.RadioButton rbPageRange;
private System.Windows.Forms.RadioButton rbMultiPage;
private System.Windows.Forms.RadioButton rbSinglePage;
private System.Windows.Forms.TextBox txtPagesPerFile;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox txtStartPage;
private System.Windows.Forms.TextBox txtEndPage;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Button btnSplit;
private System.Windows.Forms.Label lblTotalPages;
}
}