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 23:         if (!Page.IsPostBack)
Line 24:         {
Line 25:             tblProduct pro = db.tblProducts.Single(n => n.Language == Profile.Culture && n.ProductID == id.ToString());
Line 26:             if(!string.IsNullOrEmpty(pro.ViewCount.ToString()))
Line 27:                 pro.ViewCount += 1;

Source File: c:\inetpub\vhosts\thpt-lequydon-hcm.edu.vn\httpdocs\product\productdetail.aspx.cs    Line: 25

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.Table`1.System.Linq.IQueryProvider.Execute(Expression expression) +51
   ProductDetail.Page_Load(Object sender, EventArgs e) in c:\inetpub\vhosts\thpt-lequydon-hcm.edu.vn\httpdocs\product\productdetail.aspx.cs:25
   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:4.8.4494.0