回车跳转控件焦点

通过重写 ProcessCmdKey 方法

     public   partial   class  Form1 : Form
    {
         public  Form1()
        {
            InitializeComponent();
        }

         protected   override   bool  ProcessCmdKey( ref  Message msg, Keys keyData)
        {
             int  WM_KEYDOWN  =   256 ;
             int  WM_SYSKEYDOWN  =   260 ;
             if  (msg.Msg  ==  WM_KEYDOWN  |  msg.Msg  ==  WM_SYSKEYDOWN)
            {
                 switch  (keyData)
                {
                     case  Keys.Enter:
                         base .ProcessDialogKey(Keys.Tab);
                         break ;
                     default :
                         return   base .ProcessCmdKey( ref  msg, keyData);
                }
            }
             return   false ;
        }
    }