how to restrict the user to enter alphabets in textbox without validators in web application?

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i am using textbox where user enter amount..But i want to the user to restrict from entering alphabets in web application?

plz help

regards
manohar

Posted 27-Jan-12 1:16am

Manohar_manu

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BillWoodruff 27-Jan-12 9:35am

Exactly what does "web application" mean here ? SilverLight ? One of the five possible choices for Visual Studio ASP.NET "Web Application" ? ... JavaScript within ASP.NET ? ... what ?

2 solutions

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Supriya Srivastav · Answer 1 · 2012-01-27T02:08:00

Solution 2

Try this,

js function :

C#

function isNumberKey(evt, ctrlName) {
    var str = ctrlName.value;
    var charCode = (evt.which) ? evt.which : event.keyCode
    if (charCode > 31 && (charCode < 48 && charCode != 46) || charCode > 57) {
        return false;
    }
    else if (charCode == 46 && (str.indexOf(".") != -1)) {
        return false;
    }
    else {
        return true;
    }
}

Calling way:

XML

<asp:TextBox ID="txt_rate" runat="server" Width="103px" onkeypress="return isNumberKey(event,this)" ></asp:TextBox>

Posted 27-Jan-12 2:08am

Supriya Srivastav

Comments

thatraja 28-Jan-12 14:19pm

Right, 5!

BTW you know General Indian Topics? Its a forum(to discuss anything) for Indian people in Codeproject(Around 30-40 members there)

Supriya Srivastav 30-Jan-12 0:40am

Thanks thatraja.....
Ya, I know about that but never participated yet.

vinodkumarnie 31-Jan-13 5:58am

nice one..

Jyothikarthik_N · Answer 2 · 2012-01-27T01:22:00

Solution 1

Option 1: Use AJAX controls like MaskedEdit:
http://www.asp.net/ajaxLibrary/AjaxControlToolkitSampleSite/MaskedEdit/MaskedEdit.aspx[^]

Option 2: Use Javascript, and read every Input before allowing it to appear on the control.

Posted 27-Jan-12 1:22am

Jyothikarthik_N

Updated 27-Jan-12 2:10am

v2

Comments

thatraja 28-Jan-12 14:18pm

Nice alternates, 5!

BTW you know General Indian Topics? Its a forum(to discuss anything) for Indian people in Codeproject(Around 30-40 members there)