c#怎么样动态添加菜单项到主窗体,,急在线等.给出实例..

来看一看，瞧一瞧！

MenuStrip menu = new MenuStrip();
menu.Name = "menu1";

ToolStripMenuItem tool1=new ToolStripMenuItem();
tool1.Name = "tool1";
tool1.Text="aaa";

ToolStripMenuItem tool2=new ToolStripMenuItem();
tool2.Name = "tool2";
tool2.Text="bbb";

tool1.DropDownItems.Add(tool2);
menu.Items.Add(tool1);
this.Controls.Add(menu);