C#上下文菜单(右键菜单)ContextMenuStrip用法总结

设置窗体的ContextMenuStrip属性或者也可以在按钮单击事件里调出：

 private  void button_Click( object sender, EventArgs e) 
 { 
     Button btn = sender  as Button; 
     btn.FlatAppearance.BorderSize =  0; 
     Point point =  new Point(btn.Left +  this.Left +  5, btn.Top +  this.Top +  40); 
     contextMenuStrip.Show(point); 
 } 

 ///   <summary> 
 ///  绑定右键菜单
 ///   </summary> 
 private  void BindMenu() 
 { 
     ToolStripMenuItem menu0 = GetMenuItem( " 一级1 ", imageList1.Images[ 0]); 
     ToolStripMenuItem menu01 = GetMenuItem( " 二级11 ", imageList1.Images[ 1]); 
     menu01.Click +=  new EventHandler(toolStripMenuItem_Click); // 添加事件 
    ToolStripMenuItem menu02 = GetMenuItem( " 二级12 ", imageList1.Images[ 2]); 
     menu0.DropDownItems.Add(menu01); 
     menu0.DropDownItems.Add(menu02); 
     cMenu.Items.Add(menu0); 
     ToolStripMenuItem menu1 = GetMenuItem( " 一级2 ", imageList1.Images[ 0]); 
     ToolStripMenuItem menu11 = GetMenuItem( " 二级21 ", imageList1.Images[ 1]); 
     ToolStripMenuItem menu12 = GetMenuItem( " 二级22 ", imageList1.Images[ 2]); 
     menu1.DropDownItems.Add(menu11); 
     menu1.DropDownItems.Add(menu12); 
     cMenu.Items.Add(menu1); 
 } 
 ///   <summary> 
 ///  菜单项事件响应
 ///   </summary> 
 ///   <param name="sender"></param> 
 ///   <param name="e"></param> 
 private  void toolStripMenuItem_Click( object sender, EventArgs e) 
 { 
     ToolStripMenuItem menu = sender  as ToolStripMenuItem; 
     MessageBox.Show(menu.Text); 
 } 
 ///   <summary> 
 ///  生成菜单项
 ///   </summary> 
 ///   <param name="txt"></param> 
 ///   <param name="img"></param> 
 ///   <returns></returns> 
 private ToolStripMenuItem GetMenuItem( string txt,Image img) 
 { 
     ToolStripMenuItem menuItem =  new ToolStripMenuItem(); 
     menuItem.Text = txt; 
     menuItem.Image = img; 
      return menuItem; 
 } 

url: http://greatverve.cnblogs.com/archive/2012/03/13/ContextMenuStrip.html