c# - EF generating "Specified method is not supported" error in SqlQuery -


i using entity framework 5 i've tried code following:

var result = context.database.sqlquery<entity>("select * ref.entity");

but following error:

specified method not supported.

can show me resolution issue?

stack trace

"at efproviderwrappertoolkit.dbconnectionwrapper.createdbcommand()\r\n @ system.data.common.dbconnection.createcommand()\r\n @ system.data.objects.objectcontext.createstorecommand(string commandtext, object[] parameters)\r\n @ system.data.objects.objectcontext.executestorequeryinternal[telement](string commandtext, string entitysetname, mergeoption mergeoption, object[] parameters)\r\n @ system.data.objects.objectcontext.executestorequery[telement](string commandtext, object[] parameters)\r\n @ system.data.entity.internal.internalcontext.executesqlquery[telement](string sql, object[] parameters)\r\n @ system.data.entity.internal.internalcontext.executesqlqueryasienumerable[telement](string sql, object[] parameters)\r\n @ system.data.entity.internal.internalcontext.executesqlquery(type elementtype, string sql, object[] parameters)\r\n @ system.data.entity.internal.internalsqlnonsetquery.getenumerator()\r\n @ system.data.entity.internal.internalsqlquery1.getenumerator()\r\n @ system.linq.systemcore_enumerabledebugview1.get_items()"

the answer quite simple. not sure if have source code of efproviderwrappertoolkit. should , have loot @ it, notice dbconnectionwrapper inherits dbconnection overrides createdbcommand method not provide functionality it, instead throws , exception.

/// <summary>         /// creates , returns <see cref="t:system.data.common.dbcommand"/> object associated current connection.         /// </summary>         /// <returns>         /// <see cref="t:system.data.common.dbcommand"/> object.         /// </returns>         protected override dbcommand createdbcommand()         {             throw new notsupportedexception();         }

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