C#重写OnKeyPress方法

   protected override void OnKeyPress(KeyPressEventArgs e)
        {
            if (e.KeyChar == 13)
            {
                this.SelectNextControl(this.ActiveControl, true, true, true, true);
            }
            base.OnKeyPress(e);
        }

        private void txt_UseName_KeyPress(object sender, KeyPressEventArgs e)
        {
            OnKeyPress(e);
        }