Getting Javascript error with: $create(Microsoft.Reporting.WebFormsClient.ReportViewer

We have a report viewer and it adds the following jscript into the aspx file:

//<![CDATA[
Sys.Application.add_init(function() {

if (typeof Microsoft == 'undefined' ||
    typeof Microsoft.Reporting == 'undefined' ||
    typeof Microsoft.Reporting.WebFormsClient == 'undefined' ||
    typeof Microsoft.Reporting.WebFormsClient.ReportViewer == 'undefined')
    Sys.UI.DomElement.setVisible($get('ReportViewer1_HttpHandlerMissingErrorMessage'), true);
    $create(Microsoft.Reporting.WebFormsClient.ReportViewer, {"_internalViewerId":"ReportViewer1_ctl03","id":"ReportViewer1"}, null, null);
});

But it keeps on showing a script error 'Microsoft is undefined' when it hits the

$create(Microsoft.Reporting.WebFormsClient.ReportViewer

line. We've just upgraded f开发者_如何学Pythonrom Silverlight 3 / VS2008 to SL4 VS2010 - is there something missing?

I get the exact same error. I followed the instructions at http://otkfounder.blogspot.com/2007/11/solving-reportviewer-rendering-issue-on.html but that didn't solve the problem and i still get the error as well. Give it a shot though, it may work for you...

Just add this line to the web.config inside the system.web httpHandlers tags

  <add verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0,Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />

or the token and version you are using.

Adding

  <add verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0,Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />

to <httpHandlers> in <system.web> (as suggested in one answer above) seems to be a deprecated setting, after I tried that I immediately got a different error:

HTTP Error 500.22 - Internal Server Error
An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode.

What I found out is that that the new settings have to be here:

<system.webServer>
  <handlers>
     <add name="ReportViewerWebControlHandler" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
  </handlers>
  ...

After adding this to the Web.config, the web site worked for me immediately. Hints how to configure the ReportViewer control itself can be found here.