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                                  • I had created a project with target framework as 2.0 using VS2008 and Devexpress grid control 8.3.5. After upgrading our IDE we have now started using VS2010.
                                    When i open the same project, i cannot get to view the forms. I get a message

                                    "This method explicitly uses CAS policy, which has been obsoleted by the .NET Framework. In order to enable CAS policy for compatibility reasons, please use the NetFx40_LegacySecurityPolicy configuration switch. Please see for more information. "

                                    The call stack of the error comes to
                                    at System.Security.SecurityManager.ResolvePolicy(Evidence evidence)
                                    at DevExpress.Data.Helpers.SecurityHelper.IsPermissionGranted(IPermission permission)
                                    at DevExpress.Utils.Design.DXAssemblyResolverEx.Init()
                                    at DevExpress.XtraEditors.XtraForm..cctor()

                                    Could you please help for the issue.


                                Hi Jayesh,

                                Thank you for your message.

                                To be able to use our components in VS 2010, you need to install the 10.1/10.2 version.
                                Previous versions are not supported by VS 2010.

                                We hope that you find this information helpful.



                                Is there no other way. Currently i cannot upgrade to Devexpress version 10.x since this involves a lot of modifications in a lot of projects which is not affordable at this point of time. Pls advise if there is a work-around of it.


                                Hi Jayesh,

                                The problem with CAS policy is known to us. Please upgrade to the 8.3.8 version where this problem is eliminated. Also, please refer to the following issue for a possible workaround: Components are incompatible with .NET 4.0 / VS2010 CTP / Beta 1


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