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Version Q2 2011 released 07/12/2011
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Button / Accessibility

This is a standard button with "AccessKey: A".
Link Button This is a Link button with "AccessKey: B".
Radio Button 1
Radio Button 2
Radio Button 3 		Radio buttons with AccessKey attributes: 1, 2 and 3, respectively.
CheckBox 1
CheckBox 2
CheckBox 3 		Checkbox buttons with AccessKey attributes: 4, 5 and 6, respectively.
These RadButton checkbox buttons have AccessKey attributes: 7, 8 and 9.
This CustomToggle button has assigned "AccessKey: 0 (number)".

Accessibility validation

Validate with WAVE

WAVE is a free web accessibility evaluation tool, which checks for compliance issues with many of the Section 508 and WCAG guidelines. Have in mind that only humans can determine whether a web page is accessible - the above validation link is provided for the sake of completeness.


  • The interface of RadButton for ASP.NET AJAX is level A accessible (in compliance with the W3C Web Accessibility Guidelines 2.0) as well as Section 508 compliant.

    RadButton passes the check of the WAVE automated content compliance tool for Section 508 and WCAG 2.0 - Compliance Level A.

    The control is also visible in Windows High Contrast mode when rendered with Simple skin.

    Keyboard support: Press "Alt + AccessKey in IE" ("Shift + Alt + AccessKey" for Firefox, Shift + Esc + AccessKey for Opera) or use Tab to move to and focus the Button control.
    Note: By default tab-access is disabled in Safari. To enable it, check "Preferences > Advanced > Press tab to highlight each item on a page".

Source Code

C# VB.NET
Show code in new window Demo isolation steps
  • <%@ Page Language="vb" AutoEventWireup="true" Inherits="Telerik.Web.Examples.Button.Accessibility.DefaultVB"
        CodeFile="DefaultVB.aspx.vb" %>

    <%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
    <%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
    <%@ Register TagPrefix="qsf" TagName="Header" Src="~/Common/Header.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="HeadTag" Src="~/Common/HeadTag.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="Footer" Src="~/Common/Footer.ascx" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <qsf:HeadTag ID="Headtag1" runat="server" />
        <style type="text/css">
            .yesNoHovered .rbText
            {
                color: White !important;
            }
            .imgBtnTable td
            {
                border-bottom: 1px solid #eee;
                padding: 5px;
            }
            .imgBtnTable td.center
            {
                padding-left: 50px;
                border-right: 1px solid #eee;
                width: 200px;
            }
        </style>
    </head>
    <body class="BODY">
        <form id="form1" method="post" runat="server">
        <qsf:Header ID="Header1" runat="server" NavigationLanguage="VB" ShowSkinChooser="false" />
        <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
        <telerik:RadWindowManager EnableAriaSupport="true" ID="RadWindowManager" runat="server"></telerik:RadWindowManager>
        <script type="text/javascript">
            /*Things to do after the Beta release:
            1. Get the value of the AccessKey from the button with AccessKey="A"
            2. Get the text from last button with AccessKey="0"
            */
            function OnClientClicked(sender, args) {
                var accessKey = ($telerik.isIE || sender.get_buttonType() == Telerik.Web.UI.RadButtonType.StandardButton) ? sender.get_textElement().accessKey : sender.get_element().accessKey;
                radalert(sender.get_text() + " with AccessKey " + accessKey + " button was pressed");
                //args.set_cancel(true);
            }
        </script>

            <table cellpadding="0" cellspacing="0" width="100%" class="imgBtnTable">
                <tr>
                    <td class="center">
                        <telerik:RadButton AccessKey="A" OnClientClicked="OnClientClicked" ID="btnUpload" AutoPostBack="false"
                            runat="server" ButtonType="StandardButton" Text="Standard Button">
                            <Icon PrimaryIconCssClass="rbUpload" PrimaryIconLeft="5" />
                        </telerik:RadButton>
                    </td>
                    <td >
                        This is a standard button with "AccessKey: A".
                    </td>
                </tr>
                <tr>
                    <td class="center">
                        <telerik:RadButton ID="RadButton1" AccessKey="B" AutoPostBack="false"
                        OnClientClicked="OnClientClicked" runat="server" ButtonType="LinkButton" Text="Link Button" ToolTip="Link Button">
                            <Icon SecondaryIconCssClass="rbSave" />
                        </telerik:RadButton>
                    </td>
                    <td>
                        This is a Link button with "AccessKey: B".
                    </td>
                </tr>
                <tr>
                    <td class="center">
                        <telerik:RadButton ID="RadioButton1" AccessKey="1" OnClientClicked="OnClientClicked" runat="server" ButtonType="ToggleButton" ToggleType="Radio"
                            AutoPostBack="false" GroupName="Radio" Text="Radio Button 1" ToolTip="Radio Button 1">
                        </telerik:RadButton><br />
                        <telerik:RadButton ID="RadioButton2" AccessKey="2" OnClientClicked="OnClientClicked" runat="server" ButtonType="ToggleButton" ToggleType="Radio"
                            AutoPostBack="false" GroupName="Radio" Text="Radio Button 2" Checked="true" ToolTip="Radio Button 2">
                        </telerik:RadButton><br />
                        <telerik:RadButton ID="RadioButton3" AccessKey="3" OnClientClicked="OnClientClicked" runat="server" ButtonType="ToggleButton" ToggleType="Radio"
                            AutoPostBack="false" GroupName="Radio" Text="Radio Button 3" ToolTip="Radio Button 3">
                        </telerik:RadButton>
                    </td>
                    <td>
                        Radio buttons with AccessKey attributes: 1, 2 and 3, respectively.
                    </td>
                </tr>
                <tr>
                    <td class="center">
                        <telerik:RadButton ID="RadButton2" AccessKey="4" OnClientClicked="OnClientClicked" runat="server" ButtonType="ToggleButton" ToggleType="CheckBox"
                            AutoPostBack="false" Text="CheckBox 1" ToolTip="CheckBox 1">
                        </telerik:RadButton><br />
                        <telerik:RadButton ID="RadButton3" AccessKey="5" OnClientClicked="OnClientClicked" runat="server" ButtonType="ToggleButton" ToggleType="CheckBox"
                            AutoPostBack="false" Text="CheckBox 2" Checked="true" ToolTip="CheckBox 2">
                        </telerik:RadButton><br />
                        <telerik:RadButton ID="RadButton4" AccessKey="6" OnClientClicked="OnClientClicked" runat="server" ButtonType="ToggleButton" ToggleType="CheckBox"
                            AutoPostBack="false" Text="CheckBox 3" ToolTip="CheckBox 3">
                        </telerik:RadButton>
                    </td>
                    <td>
                        Checkbox buttons with AccessKey attributes: 4, 5 and 6, respectively.
                    </td>
                </tr>
                <tr>
                    <td class="center">
                        <telerik:RadButton ID="CheckBox1" AccessKey="7" OnClientClicked="OnClientClicked" runat="server" ButtonType="StandardButton" ToggleType="CheckBox"
                            Checked="true" AutoPostBack="false" BorderWidth="0" BackColor="transparent" Text="CheckBox 1">
                            <ToggleStates>
                                <telerik:RadButtonToggleState Text="Checked" SecondaryIconCssClass="rbToggleCheckboxChecked" />
                                <telerik:RadButtonToggleState Text="UnChecked" SecondaryIconCssClass="rbToggleCheckbox" />
                            </ToggleStates>
                        </telerik:RadButton>
                        <div style="padding-bottom: 5px;">
                        </div>
                        <telerik:RadButton ID="CheckBox" AccessKey="8" OnClientClicked="OnClientClicked" runat="server" ButtonType="StandardButton" ToggleType="CheckBox"
                            AutoPostBack="false" BorderWidth="0" BackColor="transparent" Text="CheckBox 2">
                            <ToggleStates>
                                <telerik:RadButtonToggleState Text="Checked" SecondaryIconCssClass="rbToggleCheckboxChecked" />
                                <telerik:RadButtonToggleState Text="UnChecked" SecondaryIconCssClass="rbToggleCheckbox" />
                            </ToggleStates>
                        </telerik:RadButton>
                        <div style="padding-bottom: 5px;">
                        </div>
                        <telerik:RadButton ID="CheckBox3" AccessKey="9" OnClientClicked="OnClientClicked" runat="server" ButtonType="StandardButton" ToggleType="CheckBox"
                            Checked="true" AutoPostBack="false" BorderWidth="0" BackColor="transparent" Text="CheckBox 3">
                            <ToggleStates>
                                <telerik:RadButtonToggleState Text="Checked" SecondaryIconCssClass="rbToggleCheckboxChecked" />
                                <telerik:RadButtonToggleState Text="UnChecked" SecondaryIconCssClass="rbToggleCheckbox" />
                            </ToggleStates>
                        </telerik:RadButton>
                    </td>
                    <td>
                        These RadButton checkbox buttons have AccessKey attributes: 7, 8 and 9.
                    </td>
                </tr>
                <tr>
                    <td class="center">
                        <telerik:RadButton ID="BuiltinIconsButton2" AccessKey="0" OnClientClicked="OnClientClicked" runat="server" ButtonType="StandardButton" Text="Toggle Button"
                            ToggleType="CustomToggle" AutoPostBack="false">
                            <ToggleStates>
                                <telerik:RadButtonToggleState SecondaryIconCssClass="rbOk" Text="OK" />
                                <telerik:RadButtonToggleState SecondaryIconCssClass="rbCancel" Text="Cancel" />
                            </ToggleStates>
                        </telerik:RadButton>
                    </td>
                    <td>
                        This CustomToggle button has assigned "AccessKey: 0 (number)".
                    </td>
                </tr>
            </table>
        
        
        <div style="padding-top: 15px;">
            <h3>Accessibility validation</h3>
            <asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click">Validate with WAVE</asp:LinkButton>
            <p>
                WAVE is a free web accessibility evaluation tool, which checks for compliance issues
                with many of the Section 508 and WCAG guidelines. Have in mind that
                only humans can determine whether a web page is accessible - the above validation
                link is provided for the sake of completeness.</p>
        </div>
        <qsf:Footer runat="server" ID="Footer1" ShowCodeViewer="true" />
        </form>
    </body>
    </html>

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