Datagridview dropdownbox value changed

[Danny M]

When i change the value in the dropdownbox.
The value changes.
When i check the datatable the value has changed
But when i want to save it to the database the record didnt got a
changed flag
When i do dtTest = dtData.getchang es then dtTest is nothing ???
But still the value in the datatable has the right value, but because
it didnt have a change flag it isnt saved to the database???

What i am doing wrong??

With _ColumnPositie
.HeaderText = "Positie"
.Width = 120
.DataSource = g_cDatabase.dtP ositie
.DataPropertyNa me = "PlayerPosi tie"
.DisplayMember = "PositieOmschri jving"
.ValueMember = "Positie"
.Name = "cboPositie "
End With
dgvPlayers.Colu mns.Insert(3, _ColumnPositie)
mine update functie

Public Sub DBUpdate(ByVal dtData As DataTable, ByVal sTabelNaam As
String)

Dim daUpdate As New SqlDataAdapter( )
daUpdate.Select Command = New SqlCommand("Sel ect * from " &
sTabelNaam, _SQLConn)
Dim cbUpdate As SqlCommandBuild er = New
SqlCommandBuild er(daUpdate)

Dim dtTest As DataTable
dtTest = dtData.GetChang es

cbUpdate.GetDel eteCommand()
cbUpdate.GetIns ertCommand()
cbUpdate.GetUpd ateCommand()

daUpdate.Update (dtData)
dtData.AcceptCh anges()
End Sub

and if a value changes:

Private Sub dgvPlayers_Cell ValueChanged(By Val sender As Object, ByVal e
As System.Windows. Forms.DataGridV iewCellEventArg s) Handles
dgvPlayers.Cell ValueChanged

If dgvPlayers.Curr entCell.ColumnI ndex = 3 Then
g_cDatabase.DBU pdate(dgvPlayer s.DataSource, "T_Players" )
End If
end sub