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:     {
Line 24:         var db = new CustomDataContext();
Line 25:         var page = db.app_pages.First(x => x.PageUrl.ToLower() == Request.QueryString["url"].ToLower());
Line 26:         if (page!=null)
Line 27:         {

Source File: d:\inetpub\vhosts\apet4u-4292.package\pricelesspups.net\wwwroot\pages\Default.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) +1166
   System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries) +120
   System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query) +352
   System.Data.Linq.Table`1.System.Linq.IQueryProvider.Execute(Expression expression) +54
   System.Linq.Queryable.First(IQueryable`1 source, Expression`1 predicate) +249
   pages_Default.GetPageDetails() in d:\inetpub\vhosts\apet4u-4292.package\pricelesspups.net\wwwroot\pages\Default.aspx.cs:25
   pages_Default.Page_Load(Object sender, EventArgs e) in d:\inetpub\vhosts\apet4u-4292.package\pricelesspups.net\wwwroot\pages\Default.aspx.cs:16
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +85
   System.Web.UI.Control.OnLoad(EventArgs e) +79
   System.Web.UI.Control.LoadRecursive() +130
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2856


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