C#编写的windows计算器-源代码(26) this.menuItem8.Index = 0; this.menuItem8.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] { this.menuItem9, this.menuItem10}); this.menuItem8.Text = "文件(&F)"; // // menuItem9 // this.menuItem9.Index = 0; this.menuItem9.Text = "打开windows计算器(&O)"; this.menuItem9.Click += new System.EventHandler(this.menuItem9_Click); //