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private void tvContact_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button != MouseButtons.Right) return;
Point ClickPoint = new Point(e.X, e.Y);
TreeNode crtNode = tvContact.GetNodeAt(ClickPoint) ;
if (crtNode != null)//判断你点的是不是一个节点
{
}
}
tv.AfterSelect += new TreeViewEventHandler(tv_AfterSelect);
}
void tv_AfterSelect(object sender, TreeViewEventArgs e)
{
MessageBox.Show(e.Node.Text);
}