I have a form bound to a specific row in a table in a dataset. I am trying
to implement Save and Discard buttons. I have the Save button working using
the DataRowView.EndEdit method. For the Discard button I call
DataRowView.CancelEdit. The changes really are canceled, but the user input
is still there. I can't figure out how to get the Textbox to revert to the
previous value. What's the trick?

Here's the code:
   Private Sub btnPlatformSave_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles btnPlatformSave.Click
       Dim Row As DataRowView
       Row = CType(Me.BindingContext(DsData1, "Platform").Current,
DataRowView)
       Row.EndEdit()
       btnPlatformSave.Enabled = False
       btnPlatformDiscard.Enabled = False
   End Sub

   Private Sub btnPlatformDiscard_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles btnPlatformDiscard.Click
       Dim Row As DataRowView
       Row = CType(Me.BindingContext(DsData1, "Platform").Current,
DataRowView)
       Row.CancelEdit()
           ' Get old values back
       btnPlatformSave.Enabled = False
       btnPlatformDiscard.Enabled = False
   End Sub