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 15:         using (_dbSubDataContext _db=new _dbSubDataContext())
Line 16:         {
Line 17:             tn = _db.subsitetblGioiThieus.Single(r => r.ID == Utilities._GetID_Request(Request.QueryString["id"]));
Line 18:             title = tn.Name;
Line 19:             rpOtherNews.DataSource = _db.subsitetblGioiThieus.Where(r => r.ID != tn.ID && r.SiteID==siteid).OrderByDescending(r => r.ID).Skip(0).Take(10).ToList();

Source File: c:\inetpub\wwwroot\WebChuPah\Subsite\UserPages\Info.aspx.cs    Line: 17

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) +3121
   System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries) +187
   System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query) +410
   System.Data.Linq.Table`1.System.Linq.IQueryProvider.Execute(Expression expression) +48
   UserPages_News.Page_Load(Object sender, EventArgs e) in c:\inetpub\wwwroot\WebChuPah\Subsite\UserPages\Info.aspx.cs:17
   System.Web.UI.Control.OnLoad(EventArgs e) +106
   System.Web.UI.Control.LoadRecursive() +68
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3785


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.4076.0