How to handle key press events in asp.net c#

Along with that,you can refer the following URL:

1.http://www.dotnetspider.com/forum/47359-Keypress-event-ASP-Net.aspx

2.http://www.dotnetspider.com/forum/ViewForum.aspx?ForumId=3606

3.http://forums.devshed.com/net-development-87/how-to-code-for-key-press-event-in-asp-net-365822.html

You should use cliend side script to restrict user to enter some value.

Here is the code:

Enter the filter condition and on code bvehind page load, add the keypress event
to the element by:
TextBox1.Attributes.Add("keypress","return PrecessKeyAlfaNumeric(this,event");
function PrecessKeyAlfaNumeric( textBox, textEvent )

Paste this code in aspx file within scriipt tag.

/*------------------------------------------------------------------------
Purpose: Restricts the text field to Alpha numeric
Inputs : Text field object, event object
Returns: Bool
-------------------------------------------------------------------------*/
{
var code = textEvent.which; // Netscape Method
if (code == null)
{
//alert("Null code");
code = textEvent.keyCode;//IE 4 Method
}

//alert("Got It data=" + code +" value="+textBox.value);
if(!( (code >= 48 && code <= 57) || (code == 8) ||
(code >= 65 && code <= 90) ||
(code >= 97 && code <= 122)))
{
return false;
}
return true;
}

Thanks -- Vijaya Kadiyala

www.DotNetVJ.com

Hi,

You need to handle it on the client side. here is a sample.

<%@ Page Language="C#" %>