Is backspace considered character?

[Aamna]

In my program the text-box should accept only integers and it should prompt a message if a character is entered in the text box. But it is taking the backspace button that the user may use to clear the entered data as a character and prompting warning message
How can i make the backspace not be considered a character or make the program accept integers and backspace?

this is the try catch statement I'm using to handle the character entering error:

 Dim z As Integer

        Try
            z = CInt(TxtQP.Text)
        Catch ex As Exception
            MessageBox.Show("Characters are not allowed, Please Enter a Number")
            TxtQP.Text = 1
            TxtQP.Focus()
            Exit Sub
        End Try

THANK YOU!

[Oralloy]

You need to test for the backspace character, and if it's there, fix up the input.

Maybe something like this:

If Right$(TxtQP.Text, 1) = vbBs Then
  TxtQP = Left$(TxtQP, len(TxtQP)-1)
End If

Luck!

Or is the backspace not showing up in the string, but as the input character kicking off your procedure?