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 34:     PageContent theContent = DB.PageContents.Where(_p => _p.published && _p.PageId == thePage.id).First();
Line 35: 
Line 36:     CategoriesTree theCat = DB.CategoriesTrees.Where(c => c.id == thePage.CatId).First();
Line 37: 
Line 38:     string PathName = theCat.Pathname;

Source File: c:\inetpub\vhosts\ilidomika.gr\somaygies.gr\_CategorizedArticle.cshtml    Line: 36

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
   ASP._Page__CategorizedArticle_cshtml.Execute() in c:\inetpub\vhosts\ilidomika.gr\somaygies.gr\_CategorizedArticle.cshtml:36
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +252
   System.Web.WebPages.WebPage.ExecutePageHierarchy(IEnumerable`1 executors) +99
   System.Web.WebPages.WebPage.ExecutePageHierarchy() +185
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +122
   System.Web.WebPages.<>c__DisplayClass7.<RenderPageCore>b__6(TextWriter writer) +304
   System.Web.WebPages.WebPageBase.Write(HelperResult result) +108
   ASP._Page__CategorizedArticles_cshtml.Execute() in c:\inetpub\vhosts\ilidomika.gr\somaygies.gr\_CategorizedArticles.cshtml:11
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +252
   System.Web.WebPages.WebPage.ExecutePageHierarchy(IEnumerable`1 executors) +99
   System.Web.WebPages.WebPage.ExecutePageHierarchy() +185
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +122
   System.Web.WebPages.<>c__DisplayClass7.<RenderPageCore>b__6(TextWriter writer) +304
   System.Web.WebPages.WebPageBase.Write(HelperResult result) +108
   ASP._Page_CategorizedArticles_cshtml.Execute() in c:\inetpub\vhosts\ilidomika.gr\somaygies.gr\CategorizedArticles.cshtml:2
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +252
   System.Web.WebPages.WebPage.ExecutePageHierarchy(IEnumerable`1 executors) +99
   System.Web.WebPages.WebPage.ExecutePageHierarchy() +185
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +107
   System.Web.WebPages.WebPageHttpHandler.ProcessRequestInternal(HttpContextBase httpContext) +142


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