Server Error in '/' Application.

Object reference not set to an instance of an object.

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.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   System.Data.Linq.SqlClient.QueryConverter.VisitInvocation(InvocationExpression invoke) +1194
   System.Data.Linq.SqlClient.QueryConverter.VisitInner(Expression node) +1090
   System.Data.Linq.SqlClient.QueryConverter.VisitExpression(Expression exp) +33
   System.Data.Linq.SqlClient.QueryConverter.VisitMethodCall(MethodCallExpression mc) +1579
   System.Data.Linq.SqlClient.QueryConverter.VisitInner(Expression node) +841
   System.Data.Linq.SqlClient.QueryConverter.VisitExpression(Expression exp) +33
   System.Data.Linq.SqlClient.QueryConverter.VisitBinary(BinaryExpression b) +47
   System.Data.Linq.SqlClient.QueryConverter.VisitInner(Expression node) +445
   System.Data.Linq.SqlClient.QueryConverter.VisitExpression(Expression exp) +33
   System.Data.Linq.SqlClient.QueryConverter.VisitWhere(Expression sequence, LambdaExpression predicate) +150
   System.Data.Linq.SqlClient.QueryConverter.VisitInner(Expression node) +841
   System.Data.Linq.SqlClient.QueryConverter.VisitOrderBy(Expression sequence, LambdaExpression expression, SqlOrderType orderType) +132
   System.Data.Linq.SqlClient.QueryConverter.VisitInner(Expression node) +841
   System.Data.Linq.SqlClient.QueryConverter.VisitAggregate(Expression sequence, LambdaExpression lambda, SqlNodeType aggType, Type returnType) +81
   System.Data.Linq.SqlClient.QueryConverter.VisitSequenceOperatorCall(MethodCallExpression mc) +6734
   System.Data.Linq.SqlClient.QueryConverter.VisitInner(Expression node) +841
   System.Data.Linq.SqlClient.QueryConverter.ConvertOuter(Expression node) +128
   System.Data.Linq.SqlClient.SqlProvider.BuildQuery(Expression query, SqlNodeAnnotations annotations) +163
   System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query) +159
   System.Data.Linq.DataQuery`1.System.Linq.IQueryProvider.Execute(Expression expression) +39
   Players.Get_Player_Thumbnail(String player_id, String type_file) in G:\MyProject\TFS\FooladKhozestan\FooladKhozestan\DAL\BLL.cs:1553
   FooladKhozestan.usercontrols.media_related_uc.Set_Thumbnail() +126
   FooladKhozestan.usercontrols.media_related_uc.Page_Load(Object sender, EventArgs e) +87
   System.Web.UI.Control.OnLoad(EventArgs e) +106
   System.Web.UI.Control.LoadRecursive() +68
   System.Web.UI.Control.LoadRecursive() +162
   System.Web.UI.Control.LoadRecursive() +162
   System.Web.UI.Control.LoadRecursive() +162
   System.Web.UI.Control.LoadRecursive() +162
   System.Web.UI.Control.LoadRecursive() +162
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3785


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3770.0