Backspace button.

Hi.
I am making a calculator.
I need a button that functions like a Backspace-button on a calculator. Erase the last inserted char, or what ever may work.
I use:
Button1
TextBox1

Thanks. :)

On hitting the button , rewrite the string with all charcters except length - 1 character.

TextBox1.Text = TextBox1.Text.Substring(0,TextBox1.Text.Length-1)

be sure to check the length of the text property first, if there's only 1 char than set the text equal to "0" instead of removing the char.