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 63:         {
Line 64: 
Line 65:             tblCat2 catt_2 = db.tblCat2s.Single(m => m.Language == Profile.Culture && m.Cat2ID == GetID_News(cat2id));
Line 66:             str += "<li ><span style=''><a href='http://" + Request.Url.Authority + "/phan-tich-dau-tu.html'>Phân tích đầu tư</a></span></li>";
Line 67: 

Source File: c:\inetpub\vhosts\2dhreal.com\httpdocs\Khonggiansong\default.aspx.cs    Line: 65

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
   _Default.Getsitemap() in c:\inetpub\vhosts\2dhreal.com\httpdocs\Khonggiansong\default.aspx.cs:65
   ASP.khonggiansong_default_aspx.__RenderContent2(HtmlTextWriter __w, Control parameterContainer) in c:\inetpub\vhosts\2dhreal.com\httpdocs\Khonggiansong\default.aspx:196
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +276
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +80
   ASP.home_master.__Renderform1(HtmlTextWriter __w, Control parameterContainer) in c:\inetpub\vhosts\2dhreal.com\httpdocs\Home.master:1048
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +276
   System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +11661639
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +47
   System.Web.UI.Adapters.ControlAdapter.Render(HtmlTextWriter writer) +24
   FormRewriterControlAdapter.Render(HtmlTextWriter writer) in c:\inetpub\vhosts\2dhreal.com\httpdocs\app_code\formrewritercontroladapter.cs:20
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +116
   System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +53
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +169
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +80
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +169
   System.Web.UI.Page.Render(HtmlTextWriter writer) +40
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +80
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4239


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4494.0