C#与WPF使用mvvm简单案例点击按钮触发弹窗

创建WPF工程文件，以mvvm模式更改页面名称，及创建model类

注意页面的命名以View结尾，模型类以ViewModel结尾

安装 Prism.Core

页面添加一个按钮

<Window x:Class="MVVMDemo.Views.MainWindowView"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:MVVMDemo"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <Border>
            <Button Content="测试按钮" 
                        Command="{Binding TestCommand}"  
                        CommandParameter="{Binding RelativeSource={RelativeSource AncestorType=Window}}" 
                        Width="90" Height="50" FontSize="20" />
        </Border>
    </Grid>
</Window>

页面后台代码

using MVVMDemo.ViewModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace MVVMDemo.Views
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindowView : Window
    {
        public MainWindowView()
        {
            InitializeComponent();

            //绑定数据源
            DataContext = new MainWindowViewModel();
        }
    }
}

MainWindowViewModel代码

using Prism.Commands;
using Prism.Mvvm;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;

namespace MVVMDemo.ViewModels
{
    public class MainWindowViewModel : BindableBase
    {
        //测试按钮命令
        public ICommand TestCommand
        {
            get => new DelegateCommand(Test);
        }

        private void Test()
        {
            MessageBox.Show("有效触发", "测试mvvm");

        }
    }
}

运行效果