如何实现textBox的backspace连续消除

Question

如下图，依次是：textBox1、textBox2、textBox3、textBox4、textBox5
 
http://img.my.csdn.net/uploads/201212/19/1355900386_8024.jpg使用
private void textBox5_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyValue == 8)
            {
                this.textBox5.Text = "";
            }
        }实现了退格键消除textBox的内容，但如何连续呢？
即：消除textBox5以后，继续使用backspace可以消除textBox4,然后可以继续消除textBox3 ......

Answer 1

private void textBox5_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyValue == 8)
            {
                this.textBox5.Text = "";
                this.textBox4.Focus();//WPF为Focus(),WinForm为SetFocus()
            }
        }

Answer 2

你要怎么连续啊想清除某个文本框的内容，总得先把光标移动到控件上吧，楼主是想鼠标都不要动，直接按空格就按顺序清空文本框内容吗？可以这样
private void textBox5_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyValue == 8)
            {
                this.textBox5.Text = "";
                textBox4.Focus();//焦点给textBox4
            }            
        }
private void textBox4_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyValue == 8)
            {
                this.textBox3.Text = "";
                textBox4.Focus();//焦点给textBox3
            }            
        }
private void textBox3_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyValue == 8)
            {
                this.textBox3.Text = "";
                textBox2.Focus();//焦点给textBox2
            }            
        }
private void textBox2_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyValue == 8)
            {
                this.textBox3.Text = "";
                textBox1.Focus();//焦点给textBox1
            }            
        }
private void textBox1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyValue == 8)
            {
                this.textBox3.Text = "";
                textBox5.Focus();//焦点给textBox5
            }            
        }