为什么用键盘输入某一个字母可以完成一个按钮按下的操作
        private void Form1_KeyDown_1(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.A)
                button1_Click(sender, e);
        }
但是用方向键就不好用了，选框就在各个按钮间跳来跳去，不能完成原来的响应了呢？？
        private void Form1_KeyDown_1(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Up)
                button1_Click(sender, e);
        }
就是这样，最后button1的功能不能完成，只有一个小选框在各个按钮上跳来跳去，求解！！
KeyPreview已经设成true！！
------------------------
还有百度搜了下有人来这么一出
protected override bool ProcessDialogKey( Keys keyData)
        {
            switch (keyData)
            {
                case Keys.Left:
                    curBlock.left();
                    break;
                case Keys.Right:
                    curBlock.right();
                    break;
                case Keys.Up:
                    curBlock.rotate();
                    break;
                case Keys.Down:
                    curBlock.down();
                    break;
            }
放在Form1下，我照着打出来~但是死活找不着curBlock是啥，他提示上下文没有这个
再说这个是啥我也看不懂
纠结了两天了，求解啊求解啊

protected override bool ProcessDialogKey(Keys keyData)
        {
            switch (keyData)
            {
                case Keys.Left:
                    this.OnKeyDown(new KeyEventArgs(keyData));
                    break;
                case Keys.Right:
                    this.OnKeyDown(new KeyEventArgs(keyData));
                    break;
                case Keys.Up:
                    this.OnKeyDown(new KeyEventArgs(keyData));
                    break;
                case Keys.Down:
                    this.OnKeyDown(new KeyEventArgs(keyData));
                    break;
            }
            return true;
        }

这样，你的keyDown事件就可以响应了

谢谢你~这些函数都是怎么记住的呀