BindingSource1.DataSource = usr.table
            BindingSource1.RaiseListChangedEvents = True
            dgv.DataSource = BindingSource1
 
public sub update()
 
dim tmpdt as new datatable
tmpdt = table.getchanges(DataRowState.Modified)
 
end sub

    Dim _DT As DataTable = Nothing
 
    Private Sub Form2_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        _DT = New DataTable
        _DT.BeginLoadData()
 
        For i As Integer = 0 To 5
            Dim _Col As DataColumn = New DataColumn("", System.Type.GetType("System.String"))
            _DT.Columns.Add(_Col)
            _Col.Dispose()
            _Col = Nothing
        Next
 
        For i As Integer = 0 To 5
            Dim _Row As DataRow = _DT.NewRow
            _Row.Item(0) = String.Format("Test {0}", i.ToString)
            _DT.Rows.Add(_Row)
        Next
        _DT.EndLoadData()
        _DT.AcceptChanges() 
        Me.BindingSource1.DataSource = _DT
 
        Me.DataGridView1.DataSource = Me.BindingSource1
 
    End Sub
 
    Private Sub BindingSource1_CurrentItemChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles BindingSource1.CurrentItemChanged
        Dim tmpTable As DataTable = _DT.GetChanges(System.Data.DataRowState.Modified)
        Me.DataGridView2.DataSource = tmpTable
    End Sub