Validating user input

[AnimalCub]

I've written a small code that converts binary numbers into hex and decimal numbers. I want to restricting user input to just 0's and 1's but I'm having a bit of trouble.

Please can you help me.

Sarah Jamerson

[Iain17]

Put this into the keypress event of the control.

Private Sub Text1_KeyPress(KeyAscii As Integer)
  'if the key pressed is not 1 or 0 then set keyascii = 0.
  If (keyascii <> 48)  And (keyascii <> 49) then
    KeyAscii = 0
  End If
End Sub

This locks out all keys except the 0 or 1 key. You might want to let them press the backspace key. If so then add a condition of "keyascii <> 8".

Iain.

[rammy]

u can use the following code in the keypress event of ur textbox:

-----------------------------

Private Sub Text1_KeyPress(KeyAscii As Integer)
If Not (KeyAscii = 48 Or KeyAscii = 49 Or KeyAscii = 8) Then
KeyAscii = 0
End If
End Sub

-----------------------------

48 --> ascii vslue of zero
49 --> ascii vslue of one
48 --> ascii vslue of backspace

This should work.