| private buttonBackspace_Click ( object sender, EventArgs e ) : void | ||
| sender | object | |
| e | EventArgs | |
| return | void | |
private void buttonBackspace_Click(object sender, EventArgs e)
{
int n = this.textBox.Text.Length;
if (n == 1)
this.textBox.Text = "0";
else if (n > 0)
this.textBox.Text = this.textBox.Text.Substring(0, n - 1);
}
