winfrom实现方向键（上下左右）控制焦点

Question

 private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            switch (e.KeyData)
            {
                case Keys.Up:
                    this.Select(true, true);
                    break;
                case Keys.Left:
                  //int Index= this.ActiveControl.TabIndex;
                this.(this.ActiveControl, true, true, true, true);
                    break;
                case Keys.Right:
                    this.SelectNextControl(this.ActiveControl, true, true, true, true);
                    break;
                case Keys.Down:
                    this.SelectNextControl(this.ActiveControl, false, true, true, true);
                    break;
            }
        }这种方法只能选中下一个控件不能实现上下左右

Answer 1

默认就可以控制的吧，至于选中的是哪一个控件，就看你tab的顺序了