Create Simple ASP.NET Server Control

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Hi To All

I Want Create a Server Control in VS 2010 that called numeric textbox

a class inherited from textbox but only accept Numeric Value

when you drag this control to page Is Ready To Use

All Codes are in inside Component

I Have 2 Ways
1) Java Script
2) Ajax

You Explain Me :
Which?
and
How?

I am Beginner on this Technology, Please Explain Completely;
Thank To Advance

Posted 12-Apr-12 8:12am

ompcj4u

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Dhanamanikandan · Answer 1 · 2012-04-12T08:30:00

Hi,

Please find the below code with textbox validation has only numeric value using javascript

JavaScript

<head runat="server">
//Javascript code:
<script type="text/javascript">
    function ValidateCCNum(ccNum) {
                var ccno = ccNum.value;
                if (isNaN(ccno)) {
                    alert("Textbox value should be numeric");
                    ccNum.focus();
                    ccNum.value = null;
                    return false;
                }
                return true;
            }
</script>
</head>

ASP.NET

<%--In Aspx file call this function as below--%>
<asp:Content runat="server" ID="BodyContent" ContentPlaceHolderID="MainContent">

<asp:textbox id="txtCCDNo" onblur="ValidateCCNum(this)" runat="server"> </asp:textbox>

</asp:Content>

Run this code in aspx client page