Server Error in '/' 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 149: Line 150: Line 151: LblCourseName.Text = culture == "Arabic (Egypt)" ? coursedata.First().TItleAr : coursedata.First().TitleEn; Line 152: LblSector.Text = culture == "Arabic (Egypt)" ? DB.Sections.First(c => c.SectionUID == coursedata.First().SectorID).SectionTitleAr : DB.Sections.First(c => c.SectionUID == coursedata.First().SectorID).SectionTitleEn; Line 153:

Source File: c:\HostingSpaces\admin\actseg.com\wwwroot\UserControls\English\New_GetCourseDetails.ascx.cs    Line: 151

Stack Trace:


[InvalidOperationException: Sequence contains no elements] System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult) +3266 System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries) +189 System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query) +428 System.Data.Linq.DataQuery`1.System.Linq.IQueryProvider.Execute(Expression expression) +51 UserControls_English_New_GetCourseDetails.GetCourseData(Int32 courseId) in c:\HostingSpaces\admin\actseg.com\wwwroot\UserControls\English\New_GetCourseDetails.ascx.cs:151 UserControls_English_New_GetCourseDetails.Page_Load(Object sender, EventArgs e) in c:\HostingSpaces\admin\actseg.com\wwwroot\UserControls\English\New_GetCourseDetails.ascx.cs:42 System.Web.UI.Control.OnLoad(EventArgs e) +108 System.Web.UI.Control.LoadRecursive() +90 System.Web.UI.Control.LoadRecursive() +185 System.Web.UI.Control.LoadRecursive() +185 System.Web.UI.Control.LoadRecursive() +185 System.Web.UI.Control.LoadRecursive() +185 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4465.0