Server Error in '/' Application.

Parser Error

Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: Unknown server tag 'ajaxToolkit:FilteredTextBoxExtender'.

Source Error:


Line 409:            </table>
Line 410:            <div style="visibility: hidden">
Line 411:                <ajaxToolkit:FilteredTextBoxExtender ID="ftbe_mobile" runat="server" FilterType="Numbers"
Line 412:                    TargetControlID="txt_mobileno">
Line 413:                </ajaxToolkit:FilteredTextBoxExtender>

Source File: /EventBookMenu.aspx    Line: 411


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3770.0