[参考＋原创]实现TREEVIEW的右键选中功能

private void TreeView1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
  {
   if (e.Button == MouseButtons.Right)
   {
    TreeNode tnode = TreeView1.GetNodeAt(e.X,e.Y);
    if (tnode != null)
    {
     this.TreeView1.SelectedNode = tnode;
    }
   }
  }