1329630 - Images and charts do not display in .NET webform viewer on IIS7

Images and charts are replaced with a red X in the Visual Studio .NET webform DHTML viewer when viewed using IIS 7 on Windows Server 2008

1. This happens because the application pool is being run in the Integrated Pipeline mode 
2. IIS 7 supports two modes
   1. Classic
      • images and charts are managed using <httpHandlers>which are placed in the <system.web> section in the applications web.config file
   2. Integrated
      • on IIS 7, the <system.webServer> section is used to define <handlers> for the crystalImageHandler
      • This section may be missing if the application is being migrated from an earlier version of IIS.

If you have deployed your application to IIS 7 and see a red X in place of the report's image or chart, try one of the following: 

A) Run the application pool in the "Classic" pipeline mode

1. Ensure the crystalImageHandler is defined in the <system.web> section of the application's web.config file (in Classic mode the <system.webServer> section is ignored).
2. Below is an example for a Crystal Reports 2008 web application: 

<system.web>
        <httpHandlers>
                <add verb="GET" path="CrystalImageHandler.aspx" type="CrystalDecisions.Web.CrystalImageHandler, CrystalDecisions.Web, Version=12.0.2000.0, Culture=neutral,
                 PublicKeyToken=692fbea5521e1304"/>
        </httpHandlers>
</system.web> 

B) If you need to use the "Integrated" pipeline mode for your application pool

1. Ensure that handlers are defined in the <system.webServer> section of your application's web.config file.
2. Below is an example for a Crystal Reports 2008 web application: 
   
   <system.webServer>
           <handlers>
                   <add name="CrystalImageHandler.aspx_GET" verb="GET" path="CrystalImageHandler.aspx" type="CrystalDecisions.Web.CrystalImageHandler, CrystalDecisions.Web,
                    Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304" preCondition="integratedMode"/>
           </handlers>
           <validation validateIntegratedModeConfiguration="false"/>
   </system.webServer>

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