检测键盘是否按下指定按键

WPF 程序Demo

        //
        //工单单号输入
         //
        private void txb_OrderID_KeyUp(object sender, System.Windows.Input. KeyEventArgs e)
        {
            if (e.Key == System.Windows.Input.Key.Enter)
            {
             //执行代码

              }
        }

WinForm 程序 Demo

        //
        //txt_OrderID_KeyUp                

//
        private void txt_OrderID_KeyUp(object sender, KeyEventArgs e)   
        {
            if (e.KeyCode == Keys.Enter)
            {
             //执行代码            

           }

        }