回车切换控件焦点

      // 回车切换控件焦点//要想使这个方法起到作用先将窗体的keypreview属性改为true
        protected override void OnKeyPress(KeyPressEventArgs e)
        {
            if (e.KeyChar == 13)
            { this.SelectNextControl(this.ActiveControl, true, true, true, true);
      
            }
            base.OnKeyPress(e);
        }