求救~~~！！！ 谢谢！！！！

Question

可以先判断是否为父级啊。 if (!treeview=父级)
                {
                   
                    this.treeview.ContextMenuStrip = this.contextMenu1;
                                   }
                else
                {
                    
                    this.treeview.ContextMenuStrip = null;                }