拖放一个非文本对象到RichTextBox
本文关键字:文本 对象 RichTextBox 一个 拖放 | 更新日期: 2023-09-27 18:17:57
我试图将非文本对象从标签拖放到RichTextBox。但是当我将鼠标移动到RTB上时,它不允许我放下。
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
richTextBox1.AllowDrop = true;
richTextBox1.Drop+=new DragEventHandler(richTextBox1_Drop);
richTextBox1.DragEnter +=new DragEventHandler(richTextBox1_DragEnter);
richTextBox1.DragOver+=new DragEventHandler(richTextBox1_DragOver);
labelSender.MouseDown+=new MouseButtonEventHandler(labelSender_MouseDown);
}
private void richTextBox1_Drop(object sender, DragEventArgs e)
{
DropContent dropContent = (DropContent)e.Data.GetData(typeof(DropContent));
richTextBox1.AppendText(dropContent.Content);
}
private void richTextBox1_DragOver(object sender, DragEventArgs e)
{
e.Effects = DragDropEffects.Copy;
}
private void richTextBox1_DragEnter(object sender, DragEventArgs e)
{
e.Effects = DragDropEffects.Copy;
}
private void labelSender_MouseDown(object sender, MouseEventArgs e)
{
DragDrop.DoDragDrop((Label)sender, new DropContent("HelloRichTextBox"), DragDropEffects.Copy);
}
}
public class DropContent //Object containing dragging data
{
public string Content;
public DropContent(string content)
{
this.Content = content;
}
}
RTB似乎只允许删除文本
来自"Xcalibur37"的代码部分解决了这个确切的问题,在dragOver事件中:
e.Handled = true;
希望它能解决别人的问题,因为它解决了我的问题,这正是最初的问题。
您可以在本页查看他的完整答案:在wpf中拖放路径
不需要拖放方法和DropContent类。你只需要写MouseDown方法:
public partial class MainWindow : Window {
public MainWindow() {
InitializeComponent();
richTextBox1.AllowDrop = true;
labelSender.MouseDown += new MouseButtonEventHandler(labelSender_MouseDown)
}
private void labelSender_MouseDown(object sender, MouseButtonEventArgs e) {
DragDrop.DoDragDrop((Label)sender, ((Label)sender).Content, DragDropEffects.Copy);
}
}