I have Kevin McNeish' book '.Net for Visual FoxPro Developers' and I typed in the
code on page 141 (pasted below) into a VB class.

When I compile, I get the following errors:
'ChangeDatabase' cannot implement 'ChangeDatabase' because there is no matching sub on interface 'IDbConnection'.
'ConnectionString' cannot implement 'ConnectionString'...
'ConnectionTimeOut' cannot implement 'ConnectionTimeOut'...
'State' cannot implement 'State'...

and 5 more like this:

'VfpConnection.VfpConnection' must implement 'Overridable Property ConnectionString() As String' for interface 'System.Data.IDbConnection'. Implementing property must have matching 'ReadOnly'/'WriteOnly' specifiers.


What am I doing wrong?




Public Class VfpConnection

Implements System.Data.IDbConnection

' Properties
Public Function ConnectionString() As String() _
Implements IDbConnection.ConnectionString
' Place code here
Return Nothing
End Function

Public Function ConnectionTimeOut() As String() _
Implements IDbConnection.ConnectionTimeOut
' Place code here
Return Nothing
End Function

Public Function Database() As String() _
Implements IDbConnection.Database
' Place code here
Return Nothing
End Function

Public Function State() As String() _
Implements IDbConnection.State
' Place code here
Return Nothing
End Function

Public Overloads Function BeginTransaction() As IDbTransaction _
Implements IDbConnection.BeginTransaction
' Place code here
Return Nothing
End Function

Public Overloads Function BeginTransaction(ByVal level As System.Data.IsolationLevel) _
As IDbTransaction _
Implements IDbConnection.BeginTransaction
' Place code here
Return Nothing
End Function

Public Sub ChangeDatabase() _
Implements IDbConnection.ChangeDatabase
' Place code here
End Sub

Public Sub Close() _
Implements IDbConnection.Close
End Sub

Public Function CreateCommand() As IDbCommand _
Implements IDbConnection.CreateCommand
' Place code here
Return Nothing
End Function

Public Sub Open() _
Implements IDbConnection.Open
' Place code here
End Sub

End Class 'VfpConnection