Prevent colon in textbox

[jamie_pattison]

The below code allows me to prevent a textbox to only allow numerics, backspace. I would also like to have the textbox to accept ":", but struggling to find the correct way to do this. Could anyone advise? Below code is in the Keypress event.

Thanks

        If Not Char.IsDigit(e.KeyChar) Then
            If Not e.KeyChar = vbBack Then
?????????????
            End If
        End If

 

[homer]

Hi,
Try this one

If Not Char.IsDigit(e.KeyChar) Then
   If Not e.KeyChar = vbBack Then
      If Not e.KeyChar = chr(58)


      End if      
   End If
End If

or without so many ifs

If Char.IsDigit(e.KeyChar) or e.KeyChar = vbBack or e.KeyChar = chr(58) then
' your code goes here
End if

 

[Solitaire]

The following will permit only numeric input, the backspace key, and also the colon:

Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
		If Not Char.IsDigit(e.KeyChar) Then e.Handled = True
		If e.KeyChar = vbBack Or e.KeyChar = ":" Then e.Handled = False
	End Sub