Collection was modified; enumeration operation may not execute. ERROR. Thread safety issue.

[ramrckr]

Hi,

 

We are getting the following error when calling FusionCharts.RenderChart method with proper parameters. Looks like a multi-thread execution issue. We have 4 graphs to be loaded on the same page.

This does not occur on a regular basis, but happens frequently on conducting load tests, where a lot of concurrent requests occur.

 

Would like to know if anyone else has reported this issue and the fix for this ASAP.

 

We are seriously worried, since if FusionCharts rendering is not thread safe, other request might end up rendering wrong information (Other users information) as well.

 

Collection was modified; enumeration operation may not execute. 

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

 

Exception Details: System.InvalidOperationException: Collection was modified; enumeration operation may not execute.

 

[invalidOperationException: Collection was modified; enumeration operation may not execute.]

   System.Collections.HashtableEnumerator.MoveNext() +14049324

   InfoSoftGlobal.FusionCharts.SetConfiguration(String setting, Object value) +317

   XXX.XXX.XXX.ConstructGraph(XXXSettings settings) in c:\XXXPath\XXXGraph.aspx.cs:420

   System.Web.UI.Control.OnLoad(EventArgs e) +109

   System.Web.UI.Control.LoadRecursive() +68

   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3321

 

The FusionChart dll version

File version 3.2.2.2

Product version 3.2.2.2

 

Thanks,

Ram