Ch 9 Try It Out pg 301

Adrianne · March 8th, 2014, 02:46 PM

Step 9 states to drag the user control ContactForm.ascx into the main content area. My control declaration in markup looks like this:

<%@ Page Title="Contact Us" Language="C#" MasterPageFile="~/MasterPages/Frontend.master" AutoEventWireup="true" CodeFile="Contact.aspx.cs" Inherits="About_Contact" %>

<%@ Register src="~/Controls/ContactForm.ascx" tagname="ContactForm" tagprefix="uc1" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server"></asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="cpMainContent" runat="Server">

<uc1:ContactForm ID="ContactForm1" runat="server" />

</asp:Content>

I used the downloaded code files to make sure I didn't have any typos and also cleared the browser cache in Firefox, Chrome, and IE 10 with the same results. After I save and open the file in my browser, I get the following error:

Server Error in '/' Application.

WebForms UnobtrusiveValidationMode requires a ScriptResourceMapping for 'jquery'. Please add a ScriptResourceMapping named jquery(case-sensitive).

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: WebForms UnobtrusiveValidationMode requires a ScriptResourceMapping for 'jquery'. Please add a ScriptResourceMapping named jquery(case-sensitive).

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[InvalidOperationException: WebForms UnobtrusiveValidationMode requires a ScriptResourceMapping for 'jquery'. Please add a ScriptResourceMapping named jquery(case-sensitive).]
System.Web.UI.ClientScriptManager.EnsureJqueryRegi stered() +2178762
System.Web.UI.WebControls.BaseValidator.RegisterUn obtrusiveScript() +10
System.Web.UI.WebControls.BaseValidator.OnPreRende r(EventArgs e) +9710049
System.Web.UI.Control.PreRenderRecursiveInternal() +83
System.Web.UI.Control.PreRenderRecursiveInternal() +155
System.Web.UI.Control.PreRenderRecursiveInternal() +155
System.Web.UI.Control.PreRenderRecursiveInternal() +155
System.Web.UI.Control.PreRenderRecursiveInternal() +155
System.Web.UI.Control.PreRenderRecursiveInternal() +155
System.Web.UI.Control.PreRenderRecursiveInternal() +155
System.Web.UI.Control.PreRenderRecursiveInternal() +155
System.Web.UI.Control.PreRenderRecursiveInternal() +155
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +974

It appears to be a problem with the validation controls because when I remove them from the contact form, the page loads in the browser and there are no error message.

Imar · March 10th, 2014, 10:29 AM

Hi there,

Are you using ASP.NET 4.5/4.5.1 and VS 2012/2013 instead of ASP.NET / VS 2010 that the book is targeting?

If so, these versions need a setting in web.config like this:

Code:

<configuration>
  <appSettings>
    <add key="ValidationSettings:UnobtrusiveValidationMode" value="None" />
  </appSettings>
  ...
</configuration>

In these versions, the validation controls assume that jQuery is available, and this setting turns that assumption off.

Cheers,

Imar

Adrianne · March 10th, 2014, 06:11 PM

I am using VS 2013 Express 4.5.50938. I assumed the version
I have would be backwards compatible automatically, but
apparently not.

Thanks for the line of code to add to my web.config file. That
did the trick and I was able to reapply the validation without
any additional errors.

Worked like a charm,
Adrianne

Imar · March 11th, 2014, 06:56 PM

Great, good to hear it worked.

Most of the framework is backwards compatible but this is an area that has changed somewhat between versions.

Cheers,

Imar