Chart Control Needs An HTTP Handler?

Nov 25, 2010

I have an VS2010 ASP.NET 4 web site app, to which I added the new Chart control.

When I deployed it to our web server, we get a" Internal Server Error 500." message.

I noticed that the following lines were added to the web.config since the last release, related to the chart control:

<system.web>
<httpHandlers>
<add path="ChartImg.axd" verb="GET,HEAD,POST" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
validate="false" />
</httpHandlers>

If I remove this added code from the web.config, the site works--Except for the charting functionality.

How do I get the site and the chart page to work?

This is not an issue on IIS versions < 7.

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