Server Error in '/' Application.

Invalid attempt to call FieldCount when reader is closed.

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.InvalidOperationException: Invalid attempt to call FieldCount when reader is closed.

Source Error:

The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:

1. Add a "Debug=true" directive at the top of the file that generated the error. Example:

  <%@ Page Language="C#" Debug="true" %>

or:

2) Add the following section to the configuration file of your application:

<configuration>
   <system.web>
       <compilation debug="true"/>
   </system.web>
</configuration>

Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode.

Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario.

Stack Trace:


[InvalidOperationException: Invalid attempt to call FieldCount when reader is closed.]
   System.Data.SqlClient.SqlDataReader.get_FieldCount() +2774507
   System.Data.Linq.SqlClient.ObjectReaderSession`1.GetActiveNames() +24
   System.Data.Linq.SqlClient.ObjectReaderBase`1.Buffer() +164
   System.Data.Linq.SqlClient.ObjectReaderSession`1.Buffer() +51
   System.Data.Linq.SqlClient.SqlConnectionManager.BootUser(IConnectionUser user) +93
   System.Data.Linq.SqlClient.SqlConnectionManager.UseConnection(IConnectionUser user) +359
   System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult) +1875
   System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries) +189
   System.Data.Linq.SqlClient.CompiledQuery.Execute(IProvider provider, Object[] arguments) +139
   System.Data.Linq.DeferredSourceFactory`1.ExecuteKeyQuery(Object[] keyValues) +546
   System.Data.Linq.DeferredSourceFactory`1.Execute(Object instance) +966
   System.Data.Linq.EntitySet`1.Load() +167
   System.Data.Linq.EntitySet`1.GetEnumerator() +23
   System.Linq.Enumerable.Any(IEnumerable`1 source, Func`2 predicate) +95
   <>c__DisplayClass48.<getRests>b__0(Restaurant a) +96
   System.Linq.WhereListIterator`1.MoveNext() +82
   System.Linq.Enumerable.Count(IEnumerable`1 source) +255
   FindRestaurants2.getRests(String orderBy) +10292
   FindRestaurants2.RadListView1_NeedDataSource(Object sender, RadListViewNeedDataSourceEventArgs e) +96
   Telerik.Web.UI.RadListView.OnNeedDataSource(RadListViewNeedDataSourceEventArgs e) +147
   Telerik.Web.UI.RadListView.ObtainDataSource(RadListViewRebindReason rebindReason, Boolean isBoundUsingDataSourceId) +107
   Telerik.Web.UI.RadListView.AutoDataBind(RadListViewRebindReason rebindReason) +79
   FindRestaurants2.Page_Load(Object sender, EventArgs e) +1429
   System.Web.UI.Control.OnLoad(EventArgs e) +108
   System.Web.UI.Control.LoadRecursive() +90
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0