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Export Chart (Javascript) Throws Exceptions

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I'm using ASP.NET MVC 4 and I have no issues with saving the chart using the flash method, everything works fine. However when generating just javascript charts and saving the chart, it throws some errors.


The first error it throws is that "A potentially dangerous Request.Form value .... "


So the first thing I do is set


go to FCExporter.aspx and set ValidateRequest="false"

then in the webconfig I set <httpRuntime requestValidationMode="2.0" />


Now that exception is not shown any more but a new error is thrown


"##ffffff is not a valid value for Int32."


Why doesn't the save as jpeg/png not work in the javascript mode? Please advise.




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