The reportviewer control in the Local Mode references a custom assembly to access the database and causes a non-Permission exception.

Exception

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UserCodeSystem. Security. securityexception not handled

Message = "An error occurred while requesting the" system. Data. sqlclient. sqlclientpermission, system. Data, version = 2.0.0.0, culture = neutral, publickeytoken = b77a5c561934e089 "type permission. "

Source = "mscorlib"

Stacktrace:

In system. Security. codeaccesssecurityengine. Check (Object demand, stackcrawlmark & stackmark, Boolean ispermset)

In system. Security. permissionset. Demand ()

In system. Data. Common. dbconnectionoptions. demandpermission ()

In system. Data. sqlclient. sqlconnection. permissiondemand ()

In system. Data. sqlclient. sqlconnectionfactory. permissiondemand (dbconnection outerconnection)

In system. Data. providerbase. dbconnectionclosed. openconnection (dbconnection outerconnection, dbconnectionfactory connectionfactory)

In system. Data. sqlclient. sqlconnection. open ()

In rptextension. class1.test (string T)

In the reportexprhostimpl. aggre%0_aggregateparamexprhost.get_valueexpr ()

In Microsoft. reportingservices. reportprocessing. reportruntime. evaluateaggregatevariantorbinaryparamexpr (dataaggresponinfo aggresponinfo, int32 index, ierrorcontext errorcontext)

Innerexception:

==== Solution

Reportviewer. localreport. executereportincurrentappdomain (system. reflection. Assembly. getexecutingassembly (). Eviction );