如何在树的BeforeSelect事件中，判断点击的是左键还是右键？

Question

你不要放在BeforSelect在mouseDown事件中判断，然后设一个公共变量来记下它,每次都在mousedonw来判断并改变,然后在beforeSelect 事件中判断公共变量就好啦

Answer 1

up,MouseButtons.Left左键.
MouseButtons.Right右键.

Answer 2

private void treeView1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(e.Button == System.Windows.Forms.MouseButtons.Right)
{
if(this.treeView1.GetNodeAt(e.X,e.Y) == null)
{
this.treeView1.SelectedNode = null;
}
else
{
TreeNode tn = new TreeNode();
tn = this.treeView1.GetNodeAt(e.X,e.Y);
this.treeView1.SelectedNode = tn;
this.treeView1.ContextMenu = this.contextMenu1;
}
}
}