Captcha - WCAG 2.0 and Section 508 Accessibility Compliance

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Isolate this demo as a stand-alone application
  • About this demo
  • C#
  • VB

RadCaptcha is compliant with Section 508 and Level AAA of the WCAG 2.0 Guidelines. Run WAVE, the automated web accessibility evaluation tool, to check the accessibility level of the control yourself.

This example demonstrates how you can make Telerik's ASP.NET RadCaptcha accessible by leveraging the settings for the different caption and summary properties of the rendered HTML elements.

The control is also visible in Windows High Contrast mode.

  • DefaultCS.aspx
  • DefaultCS.aspx.cs
<%@ Page Language="c#" AutoEventWireup="true" Inherits="Telerik.Web.Examples.Captcha.Accessibility.DefaultCS"CodeFile="DefaultCS.aspx.cs"  %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "">
<html xmlns=''>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadFormDecorator RenderMode="Lightweight" ID="RadFormDecorator1" runat="server" DecorationZoneID="zoneToDecorate" DecoratedControls="All" />
    <div class="demo-containers">
    <div class="demo-container"  id="zoneToDecorate">
        <telerik:RadCaptcha Skin="Office2007" AccessKey="A" ID="RadCaptcha1" runat="server"
            ErrorMessage="You have entered an invalid code" ValidationGroup="SubmitGroup"
            ForeColor="Red" CaptchaImage-EnableCaptchaAudio="true">
        <asp:Button ID="Button1" runat="server" Text="Button" ValidationGroup="SubmitGroup">
    <asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click">Validate with WAVE</asp:LinkButton>

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