KeyChar 的用法

Question

        private void txtInsuranceAmount10_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = Authentication.CheckInt(e.KeyChar);
            
        }  这是 textBox 的时间 只能是数字输入，我还想让 退格键 和delete键能响应 要怎么设置。。急

Answer 1

if (e.KeyChar == (Char)Keys.Delete)
{
  MessageBox.Show("delete Pressed");
}退格键是啥

Answer 2

楼上正解，退格键如下
if (e.KeyChar == (Char)Keys.Back)
{
  MessageBox.Show("backspace Pressed");
}