c# - 双击后禁用展开

Question

有什么方法可以在双击后禁用展开 TreeNode 吗？？

谢谢

Answer 1

private bool isDoubleClick = false;

private void treeView1_BeforeCollapse(object sender, TreeViewCancelEventArgs e)
{
    if (isDoubleClick && e.Action == TreeViewAction.Collapse)
        e.Cancel = true;
}

private void treeView1_BeforeExpand(object sender, TreeViewCancelEventArgs e)
{
    if (isDoubleClick && e.Action == TreeViewAction.Expand)
        e.Cancel = true;
}

private void treeView1_MouseDown(object sender, MouseEventArgs e)
{
    isDoubleClick = e.Clicks > 1;
}

您可以声明一个私有(private)字段 isDoubleClick 并像上面那样设置各种 TreeView 事件。这将防止在双击时展开/折叠 TreeView 节点。但是，展开/折叠将通过 + 和 - 图标起作用。