I have a class which starts like this:

Imports System.Data.OleDb

Public Class Data

    Public oDataAdapter As OleDbDataAdapter
    Public oDataSet As DataSet
    Public oDataView As DataView
    Public cSQL As String
    Public cConnectionString As String
    Public nCount As Integer
    Public oParameters As OleDbParameterCollection

To instantiate it, I do something like this:

        Dim loDataProvider As Framework.Data = New Framework.Data

Now, I need to add some parameters in the collection before doing something else. So, the instantiation code section now contains this:

        Dim loDataProvider As Framework.Data = New Framework.Data
        loDataProvider.oParameters.Add(New OleDbParameter("@Username", lcUsername))

This doesn't give any error at design time. But, when I run it, I obtain:

Object reference not set to an instance of an object

Anyone would know what I have to adjust?