ListChanged Event not firing? - vb.net

Question

I have a class with a bindinglist(of T) in it. The bindinglist is bound to a datagridview on my form. When items are added to the bindinglist, they show up in the datagridview however the scrollbar never changes to accommodate for the new data. I am starting to think this is because the Listchanged event isn't being fired (or properly captured by my form). I have my code set up like this:
Data Class:
Public Class data
Implements INotifyPropertyChanged
Public Sub new(byVal att1 as string, ByVal att2 as string)
Attribute1 = att1
Attribute2 = att2
End sub
Private mAttribute1 as string
Public Property Attribute1 as string
Get
return mAttribute1
End get
Set(ByVal value as string)
mAttribute1 = value
OnPropertyChanged("Attribute1")
End Set
End Property
Private mAttribute2 as string
Public Property Attribute2 as string
Get
return mAttribute2
End Get
Set(ByVal value as string)
mAttribute2 = value
OnPropertyChanged("Attribute2")
End Set
End Property
Public Sub OnPropertyChanged(ByVal name As String)
RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(name))
End Sub
Public Sub ChangeDataFormat()
'change from one format to the other
End Sub
End Class
Data Generator Class:
Public Class dataGenerator()
private myThread as New System.Theading.Thread(address of StartDataGeneration)
Public Sub new()
mDataList = new bindingList(of Data)
mDataList.RaiseListChangedEvents = True
Private WithEvents mDataList as bindingList(Of Data)
Public readonly DataList as bindingList(of Data)
Get
Return mDataList
End Get
End property
Private Sub StartDataGeneration()
dim att1 as integer = 1
dim att2 as integer = 2
for i as Integer = 0 to 1000
mDataList.Insert(0,New Data(att1.ToString,att2.ToString)
att1 *= 2
att2 *=3
next
End Sub
Public Sub StartDataThread()
myThread.Start()
End Sub
Public Sub ChangeDataFormat()
for each d as data in mDataList
d.ChangeDataFormat()
next
End Sub
End Class
Form:
Public class Form1
Private myGenerators as new BindingList(of dataGenerator)
Private myDataGrids as new BindingList(of DataGridView)
Private Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Mybase.Load
dim NumberOfGenerators as integer = Convert.ToInt32(My.Settings.CraneCount)
for i as integer = 1 to NumberOfGenerators
Dim newGenerator As New DataGenerator()
Dim newTab as Ne tabPage(i.ToString)
Dim NewGrid as New DataGridView
newTab.Controls.Add(newGrid)
newGrid.DataSource = newGenerator.DataList
myGenerators.Add(newGrid)
next
End Sub
Private Sub ButtonStart_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonStart.Click
for each generator as dataGenerator in myGenerators
generator.StartDataThread()
next
End Sub
Private Sub ButtonChangeFormat_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonChangeFormat.Click
for each generator as dataGenerator in myGenerators
generator.ChangeDataFormat()
next
End Sub
End Class
I know that there is a lot of code but I wanted to be clear. So when I click the start button the new items start appearing, however, once they get to the bottom of the grid the scroll bar doesn't appear. If I click the Change Format button the data changes format and updates in the grid properly. I was under the impression that the ListChanged event would automatically work with a bindinglist and datagridview. I tried calling update and refresh on myDataGridView and setting datagridview.datasource to nothing and then back to DataList.
Am I missing something?