Database Edit Update Error

[ZanTippyZoe]

I am creating an ASP.NET website that has a multitier application that uses a WCF Service that allows for database updating (Contacts.mdf). I have been working my way through step-by-step instructions. GetContacts, DeleteContact, and InsertContact work. UpdateContacts does not.

The error message that I am getting is:
ObjectDataSource 'ObjectDataSource1' could not find a non-generic method 'UpdateContacts' that has parameters: Name, CompanyName, Address, City, State, Zip, Telephone, Fax, Original_PubID, PubID

Code I am using:

in IContactsService:
<OperationContract()> _
    Function UpdateContacts(ByVal Name As String, _
        ByVal CompanyName As String, _
        ByVal Address As String, ByVal City As String, _
        ByVal State As String, ByVal Zip As String, _
        ByVal Telephone As String, ByVal Fax As String, _
        ByVal Original_PubID As Integer) As Integer

in ContactsService:

Public Function UpdateContacts(ByVal Name As String, _
        ByVal CompanyName As String, _
        ByVal Address As String, ByVal City As String, _
        ByVal State As String, ByVal Zip As String, _
        ByVal Telephone As String, ByVal Fax As String, ByVal Original_PubID As Integer) As Integer _
        Implements IContactsService.UpdateContacts
        ' Update the dataset.

        Try
            Dim ContactsTableAdapter As New  _
                ContactsDataSetTableAdapters.PublishersTableAdapter
            ContactsTableAdapter.Update(Name, CompanyName, Address, _
                City, State, Zip, Telephone, Fax, Original_PubID)
        Catch ex As Exception
            Throw ex
        End Try
    End Function

I have set the ReadOnly property of PubID to false in the DataSet Designer and also using the smart tag of the DetailsView control -- Edit Fields.

The code is straight out of a textbook, so I don't think it is that? A problem with the parameters Original_PubID, PubID that the service is looking for I think, but how to fix it? Suggestions please? TIA!

[ZanTippyZoe]

I got this to work by using Pub_ID in the 3 places in the code where I had used Original_PubID before. I was concerned since Pub_ID had ReadOnly set to False, that perhaps if the user tried to change it in the update procedure, that it would throw an error. It did not. It left the Pub_ID as it was. So, all is good, except I'm not sure why the code didn't work as written in the textbook?