Hi,

I am modifying a web page to use a different set of data for a DevExpress ASPXGridView control.
I created the new view, then created the new LINQ to SQL class, just as I remember doing for the previous data.
Now I am getting this error and have no idea what is wrong:

 Unable to obtain IQueryable instance from 'RESREPRICER.Web.DataClassesTransactionsSuccessDataContext'.'viewTransactionsSuccess' or Selecting event
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: Unable to obtain IQueryable instance from 'RESREPRICER.Web.DataClassesTransactionsSuccessDataContext'.'viewTransactionsSuccess' or Selecting event

Source Error:


Line 15:             if (!IsPostBack)
Line 16:             {
Line 17:                 ASPxGridViewMain.ExpandRow(0);
Line 18:             }
Line 19:         }


Source File: D:\Development\VS2010\RESREPRICER_asp4\ReportAdmin1Success.aspx.cs    Line: 17

Stack Trace:


[InvalidOperationException: Unable to obtain IQueryable instance from 'RESREPRICER.Web.DataClassesTransactionsSuccessDataContext'.'viewTransactionsSuccess' or Selecting event]
   DevExpress.Data.Linq.LinqServerModeDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) +3966819
   System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +22
   DevExpress.Web.Internal.DataHelper.PerformSelect() +222
   DevExpress.Web.Internal.GridDataHelper.PerformSelect() +286
   DevExpress.Web.ASPxDataWebControlBase.PerformSelect(String dataHelperName) +29
   DevExpress.Web.ASPxGridBase.DataBindNoControls() +82
   DevExpress.Web.ASPxGridView.ExpandRow(Int32 visibleIndex) +16
   RESREPRICER.Web.ReportAdmin1Success.Page_Load(Object sender, EventArgs e) in D:\Development\VS2010\RESREPRICER_asp4\ReportAdmin1Success.aspx.cs:17
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.Web.UI.Control.OnLoad(EventArgs e) +95
   System.Web.UI.Control.LoadRecursive() +59
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +678


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.2623.0

Can anyone help me understand this?