Hello,

I have a SF4.0 custom module based off the JobsModule. For the overview page (JobApplicationsOverview.ascx file) where the JobsModule has a radgrid. I want to put a ReportViewer on that page, but when I add one to my equivalent ascx file I get this error (also attached).

"The ReportViewer control failed to setup the http handler in the web.config file. You may experience troubles when viewing the report. Exception details: Object reference not set to an instance of an object."

It seems to be pointing me to modify my web.config file manually, but I'm not sure what change to make.

Thanks,

-Gary

Hopefully to make this simpler to reproduce, I started with the JobsModule demo and changed the JobApplicationsOverview.ascx to this (note: attempting to add ReportViewer to this page with a corresponding Register tag):

<%@ Control Language="C#" %>
<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register Assembly="Telerik.ReportViewer.WebForms, Version=4.2.10.1221, Culture=neutral, PublicKeyToken=a9d7983dfcc261be"
    Namespace="Telerik.ReportViewer.WebForms" TagPrefix="telerik" %>

<h1 class="sfBreadCrumb" id="sfToMainContent">Job applications</h1>
<div class="sfMain sfClearfix">
    <telerik:RadGrid ID="RadGrid1" Width="100%" AllowSorting="True" PageSize="15" AllowPaging="True" AllowMultiRowSelection="True" runat="server" Gridlines="None">
        <PagerStyle Mode="NextPrevAndNumeric" />
        <MasterTableView AutoGenerateColumns="False" Summary="RadGrid table">
            <Columns>
                <telerik:GridBoundColumn DataField="FirstName" HeaderText="1First Name" />
                <telerik:GridBoundColumn  DataField="LastName" HeaderText="Last Name" />
                <telerik:GridBoundColumn DataField="Phone" HeaderText="Phone Number" />
                <telerik:GridDateTimeColumn DataField="DateCreated" HeaderText="Submission Date" />
                <telerik:GridBoundColumn DataField="HowDidYouHear" HeaderText="Referrer" />
                <telerik:GridTemplateColumn UniqueName="TemplateColumn">
                    <HeaderStyle Width="30px" />
                    <ItemTemplate>
                        <asp:HyperLink runat="server" ID="DocumentLink" NavigateUrl='<%# Eval("MediaUrl") %>' Text='Download'/>
                    </ItemTemplate>
                </telerik:GridTemplateColumn>
            </Columns>
         </MasterTableView>
    </telerik:RadGrid>
    <telerik:ReportViewer ID="ReportViewer1" runat="server" Visible="false" Width="100%" Height="100%">
    </telerik:ReportViewer>
</div>


This is the error I get when trying to view this page in the SF administrator:

Server Error in '/' Application.

---

Could not resolve type for tag "telerik:ReportViewer". Make sure the proper namespace is registered.

[ArgumentException: Could not resolve type for tag "telerik:ReportViewer". Make sure the proper namespace is registered.]
   Telerik.Sitefinity.Web.UI.Templates.TemplateParser.ResolveType(String tag) +608
   Telerik.Sitefinity.Web.UI.Templates.TemplateParser.CreateObjectBuilder(HtmlChunk chunk) +171
   Telerik.Sitefinity.Web.UI.Templates.TemplateParser.ParseOpenTag(HtmlChunk chunk) +228
   Telerik.Sitefinity.Web.UI.Templates.TemplateParser.ParseChunk(HtmlChunk chunk) +86
   Telerik.Sitefinity.Web.UI.Templates.TemplateParser.Parse() +191
   Telerik.Sitefinity.Web.UI.Templates.ObjectBuilder.ParseHtml(TemplateParser parser) +88
   Telerik.Sitefinity.Web.UI.Templates.ObjectBuilder.ParseHtml(String html) +84
   Telerik.Sitefinity.Web.UI.Templates.ObjectBuilder..ctor(ObjectBuilder parent, String html) +60
   Telerik.Sitefinity.Web.UI.Templates.ObjectBuilder..ctor(ObjectBuilder parent, String html, String templatePath) +40
   Telerik.Sitefinity.Web.UI.Templates.ControlBuilder..ctor(ObjectBuilder parent, String html, String templatePath) +43
   Telerik.Sitefinity.Web.UI.Templates.RootBuilder..ctor(String templatePath, String html, ObjectBuilder parent) +43
   Telerik.Sitefinity.Web.UI.Templates.RootBuilder..ctor(String templatePath, String html) +42
   Telerik.Sitefinity.Web.UI.StringTemplate..ctor(String declaration, String templateName) +61
   Telerik.Sitefinity.Web.UI.ControlUtilities.GetTemplate(String virtualPath, String resourceFileName, Type assemblyInfo, String templateDeclaration) +1396
   Telerik.Sitefinity.Web.UI.ControlUtilities.GetControlTemplate(TemplateInfo info) +874
   Telerik.Sitefinity.Web.UI.ControlUtilities.GetTemplate(TemplateInfo info) +1190
   Telerik.Sitefinity.Web.UI.SimpleView.get_LayoutTemplate() +257
   Telerik.Sitefinity.Web.UI.SimpleView.get_Container() +54
   Telerik.Sitefinity.Web.UI.SimpleView.CreateChildControls() +72
   System.Web.UI.Control.EnsureChildControls() +102
   System.Web.UI.Control.PreRenderRecursiveInternal() +42
   System.Web.UI.Control.PreRenderRecursiveInternal() +175
   System.Web.UI.Control.PreRenderRecursiveInternal() +175
   System.Web.UI.Control.PreRenderRecursiveInternal() +175
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2496

Hi Gary C,

The error from your first message seems to be caused by missing handler configurations in the web.config file of the Sitefinity website. The ReportViewer needs the bellow handler added:
for IIS 6.0