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Ultimate .NET Credit Card Utility Class

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29 Aug 2007CPOL6 min read 198.8K   6.4K   161  
A powerfully simple .NET utility class for validating and testing credit card numbers in C# and VB.
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<%@ Register Assembly="RadAjax.Net2" Namespace="Telerik.WebControls" TagPrefix="radA" %>
<%@ Register Assembly="RadInput.Net2" Namespace="Telerik.WebControls" TagPrefix="radI" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>Ultimate Credit Card Utility | Test Page</title>
    <style type="text/css">
        body
        {
            font-family:Arial, Sans-Serif; 	
            background: #000 url(images/pageBkgn.jpg) repeat-x 0 0;
            color:White;
        }
        #wrapper, #footer
        {
        	background: transparent url(images/innerBkgnd.png) no-repeat 0 0;
        	padding:10px;
        	margin:25px auto 0px auto;
        	width: 780px;
        	height: 400px;
        	text-align:center;
        }  
        #footer
        {
        	height:30px;
        	color:#777;
        	background: transparent;
        }
        #footer a
        {
            color:#999;	
        }
        .success, .fail
        {
        	display:block;
        	padding:5px;
        	margin:5px;
        	border:solid 1px darkgreen;
        	background-color: Green;
        	color:White;
        }
        .fail
        {
        	background-color: Red;
        	border:solid 1px darkred;
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
    <div id="wrapper">
    <img src="images/UltimateCreditCardUtility.gif" alt="Ultimate Credit Card Utility" style="border:0;" />
    <p style="text-align:left;">
    To test the credit card validation, please enter a credit card number in the textbox below. If you do 
    not want to use a real credit card number, you can use one of these fake numbers:    
    </p>
    <ul style="text-align:left;">
        <li><b>MasterCard:</b> <asp:Label runat="server" ID="lblMc"></asp:Label></li>
        <li><b>Visa:</b> <asp:Label runat="server" ID="lblVisa"></asp:Label></li>
        <li><b>Amex:</b> <asp:Label runat="server" ID="lblAmex"></asp:Label></li>
        <li><b>Discover:</b> <asp:Label runat="server" ID="lblDisc"></asp:Label></li>
    </ul>
    <p>
    <asp:Label runat="server" ID="lblCardText" AssociatedControlID="txtCard" Text="Card Number:" Font-Bold="true" />
       <radI:RadTextBox runat="server" ID="txtCard" Width="200px" EmptyMessage="Enter number">
            <FocusedStyle Font-Size="12px" />
            <EmptyMessageStyle Font-Size="12px" ForeColor="darkgray" />
            <HoveredStyle Font-Size="12px" />
            <EnabledStyle Font-Size="12px" />            
       </radI:RadTextBox>
    <asp:Button runat="server" ID="btnValidate" Text="Validate Number" 
            onclick="btnValidate_Click" />
    </p>
    <p>
        <asp:label runat="server" ID="lblMsg"></asp:label>
    </p>
    </div>
    <div id="footer">
    Created by <a href="http://telerikwatch.com">Todd Anglin</a> | Input and Ajax powered by <a href="http://www.telerik.com">Telerik RadControls</a>
    </div>
    <!--Telerik RadAjax Settings-->
    <!--The following code ajaxifies the demo application. You can safely remove this code and the application
        will continue to work with normal PostBacks. For more information on RadAjax and other RadContorls, 
        visit http://www.telerik.com 
    -->
    <radA:RadAjaxManager ID="RadAjaxManager1" runat="server" DefaultLoadingPanelID="AjaxLoadingPanel1">
        <AjaxSettings>
            <radA:AjaxSetting AjaxControlID="btnValidate">
                <UpdatedControls>
                    <radA:AjaxUpdatedControl ControlID="lblMsg" />
                </UpdatedControls>
            </radA:AjaxSetting>
        </AjaxSettings>
    </radA:RadAjaxManager>
    <radA:AjaxLoadingPanel ID="AjaxLoadingPanel1" runat="server" BackColor="white" Transparency="30" MinDisplayTime="400">
        <asp:Image ID="Image1" runat="server" AlternateText="Loading..." ImageUrl="~/images/loading4.gif" />
    </radA:AjaxLoadingPanel>
    </form>
</body>
</html>

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Web Developer
United States United States
Todd Anglin is an Experts Exchange ASP.NET Master and a Telerik Technical Evangelist responsible for building a strong Telerik community across the globe. Before joining Telerik, Todd worked as a developer in a Fortune 200 financial services company in San Antonio as a Systems Analyst supporting applications on a wide range of platforms and technologies, including Unix, Windows Server, Informix, Oracle, and SQL Server. Todd graduated Magna Cum Laude with Business Honors from Mays Business School at Texas A&M University with a BBA in MIS and now resides with his wife in The Woodlands, Texas.

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