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   源码介绍

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
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 _1019_DragAndDrap
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void lblTarget_Drop_1(object sender, DragEventArgs e)
        {
            lblTarget.Content = e.Data.GetData(DataFormats.Text);
        }

        private void lblTarget_DragEnter_1(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.Text))
                e.Effects = DragDropEffects.Copy;
            else
                e.Effects = DragDropEffects.None;
        }

        private void Label_MouseDown_1(object sender, MouseButtonEventArgs e)
        {
            DragDrop.DoDragDrop(lblControl, lblControl.Content, DragDropEffects.Copy);
        }

    }
}