dalManager.GetProvider() - System.NotImplementedException

gajit posted on Fri, Feb 17 2012 2:01 PM

rated by 0 users

OK, so I've made _some_ progress in my attempts to put together the necessary classes, etc in Vb.Net.

I've now recreated a simple EncapsulatedInvoke-type Windows FORMS application and all seemed to be going well.

Until now.

When I try to retrieve a personList, which is being executed in the Dataportal_Fetch method of my Library.Net.PersonList class.

I get a

System.NotImplementedException

My Fetch looks like this:

    Private Overloads Sub DataPortal_Fetch()

        IsReadOnly = False

        Dim rlce = RaiseListChangedEvents

        RaiseListChangedEvents = False

        Using dalManager = DataAccess.DalFactory.GetManager()

            Dim dal = dalManager.GetProvider(Of DataAccess.IPersonDal)() '----< error is here!!

            Using data = dal.Fetch()
                While data.Read()
                    Dim item = DataPortal.FetchChild(Of PersonInfo)(data)
                    Add(item)
                End While
            End Using
        End Using
        RaiseListChangedEvents = rlce
        IsReadOnly = True

    End Sub

It definitely gets the correct dalManager and my IPersonDal looks like this:

 Imports System.Collections.Generic
Imports System.Linq
Imports System.Text
Imports System.Data

Public Interface IPersonDal

    Function Fetch() As IDataReader
    Function Fetch(id As Integer) As IDataReader
    Function Insert(firstName As String, lastName As String) As Integer
    Sub Update(id As Integer, firstName As String, lastName As String)
    Sub Delete(id As Integer)

End Interface

 Any ideas?

Thanks,

Graham