Server Error in '/hartfordtt' Application.

Sequence contains no elements

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: Sequence contains no elements

Source Error:


Line 16:         {
Line 17:             string contentname = Request.QueryString["contentid"];
Line 18:             content.Text = (from o in ec.LiteralContent where o.content_name.Equals(contentname) select o.lit_content).First();
Line 19: 
Line 20:         }

Source File: e:\web\hartford\hartfordtt\BasePage.aspx.cs    Line: 18

Stack Trace:


[InvalidOperationException: Sequence contains no elements]
   System.Linq.Enumerable.First(IEnumerable`1 source) +335
   System.Data.Objects.ELinq.<>c__11`1.<GetElementFunction>b__11_0(IEnumerable`1 sequence) +43
   System.Data.Objects.ELinq.ObjectQueryProvider.ExecuteSingle(IEnumerable`1 query, Expression queryRoot) +61
   System.Data.Objects.ELinq.ObjectQueryProvider.System.Linq.IQueryProvider.Execute(Expression expression) +134
   System.Linq.Queryable.First(IQueryable`1 source) +220
   BasePage.Page_Load(Object sender, EventArgs e) in e:\web\hartford\hartfordtt\BasePage.aspx.cs:18
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4676.0