only numbers in textbox

[Guest]

Hello,
how can i do this:
i have textbox, but i want that only numbers is possible to write in this
text box.

Thanks Lubos

[Lebesgue]

Re: only numbers in textbox

attach handler to Validating event. Use regular expression to validate
textbox content. Cancel the event if the content does not match "only
numbers"
pseudo code written here:

private void TextBox1_Valida ting(object sender, CancelEventArgs e)
{
TextBox tb = (TextBox)sender ;
e.Cancel = !Regex.IsMatch( tb.Text, "[0-9]*");
}


<l> wrote in message news:eIqN2eOcFH A.2768@tk2msftn gp13.phx.gbl...[color=blue]
> Hello,
> how can i do this:
> i have textbox, but i want that only numbers is possible to write in this
> text box.
>
> Thanks Lubos
>
>[/color]