Question

我正在尝试将选定的树视图节点复制到剪贴板，以便将其粘贴到记事本中。这是我的代码，但它不起作用。

    TreeNode selNode = (TreeNode)this.treeView1.SelectedNode;
    Clipboard.SetData("TreeNode", selNode);

Answer 1

记事本对Winforms TreeNode类一无所知。改为使用Clipboard.SetText（）：

    private void treeView1_KeyDown(object sender, KeyEventArgs e) {
        if (e.KeyData == (Keys.Control | Keys.C)) {
            if (treeView1.SelectedNode != null) {
                Clipboard.SetText(treeView1.SelectedNode.Text);
            }
            e.SuppressKeyPress = true;
        }
    }

Answer 2

XAML：

<TreeView>
  <TreeView.ItemContainerStyle>
    <Style TargetType="{x:Type TreeViewItem}">
      <EventSetter Event="Loaded" Handler="ItemLoaded"/>
    </Style >
  </TreeView.ItemContainerStyle>
</TreeView>

C＃：

protected void ItemLoaded(object sender, EventArgs e)
{
  if (sender is TreeViewItem)
  {
    TreeViewItem item = sender as TreeViewItem;

    if (item.CommandBindings.Count == 0)
    {
      CommandBinding copyCmdBinding = new CommandBinding();
      copyCmdBinding.Command = ApplicationCommands.Copy;
      copyCmdBinding.Executed += CopyCmdBinding_Executed;
      copyCmdBinding.CanExecute += CopyCmdBinding_CanExecute;
      item.CommandBindings.Add(copyCmdBinding);
    }
}

private void CopyCmdBinding_Executed(object sender, ExecutedRoutedEventArgs e)
{
  if (sender is TreeViewItem)
    if ((sender as TreeViewItem).Header is MyClass)
      Clipboard.SetText(((sender as TreeViewItem).Header as MyClass).MyValue);
}

private void CopyCmdBinding_CanExecute(object sender, CanExecuteRoutedEventArgs e)
{
  e.CanExecute = false;
  if (sender is TreeViewItem)
    if ((sender as TreeViewItem).Header is MyClass)
      e.CanExecute = true;
}

Answer 3

如果您希望其他程序识别剪贴板上的内容，则需要使用可识别的数据格式（例如纯文本或位图）字符串参数，并将树节点格式化为该格式（例如，如果选择文本，你应该传递一个'字符串'作为剪贴板数据，也许是TreeNode.Text值）。有关不同的预定义类型，请参阅System.Windows.Forms.DataFormats。

复制TreeView节点

3 个答案: