摘要：privatevoidtreeView1_MouseDown(objectsender,MouseEventArgse){if(e.Button==MouseButtons.Right){TreeNodetn=treeView1.GetNodeAt(e.X,e.Y);if(tn!=null)treeView1.SelectedNode=tn;if(tn!=null){ContextMenucon=newContextMenu();MenuItemmenu1=newMenuItem("添加");menu1.Click+=newEventHandler(menu1_Click) 阅读全文