Granting accurate permissions for Microsoft.ReportViewer dlls for NetFx40_LegacySecurityPolicy mode

I am using code from this page this answer.

I run my application properly on my dev environment. When I published localhost with unc network share

with caspol:

caspol.exe -m -ag 1 -url "file:////\MyMachine\MyProject*" FullTrust

I work properly as well.

I work with unc share because, my application deployed on production with unc and it is "somehow" shared hosting.

When I deploy to production I got :

 System.TypeInitializationException: The type initializer for 'Microsoft.Reporting.WebForms.ReportViewer' threw an exception. ---> System.IO.FileLoadException: Loading this assembly would produce a different grant set from other instances. (Exception from HRESULT: 0x80131401) at Microsoft.Reporting.WebForms.ReportViewer..cctor()

So the issue seems related to permissions, so I tried and still trying but with out success:

AppDomainSetup setup = new AppDomainSetup { ApplicationBase = AppDomain.CurrentDomain.BaseDirectory, LoaderOptimization = LoaderOptimization.NotSpecified };
setup.SetCompatibilitySwitches(new[] { "NetFx40_LegacySecurityPolicy" });

var permissionSet = new PermissionSet(System.Security.Permissions.PermissionState.None);
permissionSet.AddPermission(new FileIOPermission(FileIOPermissionAccess.AllAccess, new System.Uri(typeof(FullTrustReportviewer).Assembly.CodeBase).AbsolutePath));
permissionSet.AddPermission(new FileIOPermission(FileIOPermissionAccess.AllAccess, @"C:\myproject\packages\Microsoft.ReportViewer.Runtime.WebForms.12.0.2402.15\lib\Microsoft.ReportViewer.WebForms.dll"));
permissionSet.AddPermission(new FileIOPermission(FileIOPermissionAccess.AllAccess, @"C:\myproject\bin\Microsoft.ReportViewer.WebForms.dll"));

Microsoft.ReportViewer.WebForms.dll is set to "copy local"

But it gives at the moment : System.Security.SecurityException: 'Request failed.'

So the question is as I guessed it is related to permissions set, how can I allow ReportViewer dlls permission.

If it is not case, any helps welcomed.