Btukfyl

I am having trouble casting WPF DataGrid's current item to a linq-generated entity since a few days. It would be amazing if someone can help me out of this one.
I am getting data for the DataGrid using linq query as below:

Dim payableexpense As New exprev

Dim listofexpenses As IEnumerable(Of exprev)



Private Sub txtsearchname_TextChanged(sender As Object, e As TextChangedEventArgs) Handles txtsearchname.TextChanged

   listofexpenses = From expenses In db.exprevs

   Where expenses.school_id = currentschool.school_id AndAlso expenses.title.Contains(txtsearchname.Text.ToString) AndAlso expenses.status <> 1 AndAlso expenses.type = 1



   dgvsearchresults.ItemsSource = listofexpenses

   dgvsearchresults.Items.Refresh()

   stpexpensedetails.DataContext = payableexpense

End Sub

And for the DataGrid selection changed event, I have this code:

Private Sub dgvsearchresults_SelectionChanged(sender As Object, e As SelectionChangedEventArgs) Handles dgvsearchresults.SelectionChanged

payableexpense = dgvsearchresults.CurrentItem

End Sub

But during run-time, it is throwing an exception that:

"unable to cast object of type 'ms.internal.namedobject' to 'exprev'"

At another place in my project, the same approach is working fine.

Use the TryCast method to try to cast the SelectedItem property to an exprev:

Private Sub dgvsearchresults_SelectionChanged(sender As Object, e As SelectionChangedEventArgs) Handles dgvsearchresults.SelectionChanged

    Dim selectedItem As exprev = TryCast(dgvsearchresults.SelectedItem, exprev)

    If selectedItem IsNot Nothing Then

        payableexpense = selectedItem

        '...

    End If

End Sub