Keypress questin in WEB

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I use this code

Private void txtnumber_KeyPress(Object sender,KeyPressEventArgs e)
{
     if(!char.IsNumber(e.Keychar))
      {
          e.Handled =true;
      }
}

to filter user data is be number .So this codes can not use in C# Web.
How can I do?please help me

Posted 16-Jul-11 0:00am

tintaungshwe

Updated 16-Jul-11 0:02am

m@dhu

v2

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Sunasara Imdadhusen · Answer 1 · 2011-07-16T01:21:00

Hi,

Please write following (.aspx)

XML

<SCRIPT LANGUAGE="JavaScript">
function checkNumber(evt) {
    evt = (evt) ? evt : window.event
    var charCode = (evt.which) ? evt.which : evt.keyCode
    if (charCode > 31 && (charCode < 48 || charCode > 57)) {
        //This field accepts numbers only.
        return false
    }
    return true
}
</SCRIPT>

Please write following in (.aspx.cs)

C#

Page_Load(..)
{
   if(!isPostBack)
   {
        txtnumber.Attributes.Add("onkeypress","return checkNumber(event)");
   }
}

Thanks,
Imdadhusen

Tarun.K.S · Answer 2 · 2011-07-16T01:26:00

Solution 2

Please have a look at these discussions:

1 - http://www.dotnetspider.com/forum/3606-how-can-i-get-key-press-event-asp-net-C.aspx[^]. This one is regarding entering for numbers only.

2 - http://forums.asp.net/t/1124980.aspx/1?ASP+NET+TextBox+KeyPress+Event[^]

Hope this helps. :thumbsup:

Posted 16-Jul-11 1:26am

Tarun.K.S

Comments

thatraja 16-Jul-11 9:54am

Good links, 5!

Tarun.K.S 16-Jul-11 10:04am

Thanks a lot thAtRaja! :P

thatraja 17-Jul-11 7:55am

I'm going to pull you too to the prison.

Espen Harlinn 17-Jul-11 7:39am

Nice reply, my 5

Espen Harlinn · Answer 3 · 2011-07-17T01:40:00

Solution 3

There is always jQuery: Bind an event handler to the "keypress" JavaScript event, or trigger that event on an element[^]

Best regards
Espen Harlinn

Posted 17-Jul-11 1:40am

Espen Harlinn

Comments

Tarun.K.S 17-Jul-11 7:42am

Excellent. 5+

Espen Harlinn 17-Jul-11 8:00am

Thank you, Karun!

thatraja 17-Jul-11 7:56am

Looks like I must learn jQuery quickly. Today found more than couple of jQuery questions. 5!