控制textbox里边只输入数字

控制textbox里边只输入数字

  void textboxnum(KeyPressEventArgs e)
        {
            if ((e.KeyChar > (char)47 && e.KeyChar < (char)58) || e.KeyChar == (char)8)
            {
                e.Handled = false;
            }
            else
            {
                e.Handled = true;
            }
        }

  private void TEXTBOX1_KeyPress(object sender, KeyPressEventArgs e)
        {
            textboxnum(e);
        }