I have a DataGridView control on a Windows form and I am updating a dataset.
Everything works fine, and data is updating properly in the underlying
database.  However, changes to the dataset that I make in code does not
appear in the DataGridView.  For example, if I edit a cell of the
DataGridView, all works well with the following code:

Private Sub dg_Cases_CellEndEdit(ByVal sender As System.Object, ByVal e As
System.Windows.Forms.DataGridViewCellEventArgs) Handles dg_Cases.CellEndEdit
   If Me.CasesDataSet.HasChanges Then
   Me.CasesTableAdapter.Update(CasesDataSet.Cases)
   Me.CasesTableAdapter.Fill(CasesDataSet.Tables("Cases"))
End If
End Sub

However, when I use the code below to delete a row, two rows are actually
deleted.  Also, if I add a row in code, the new row does not appear in the
DataGridView control, although it is certainly added to the underlying
database, and it appears in the DataGridView if I reload my application:

Private Sub BindingNavigatorDeleteItem_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs)
   CasesBindingSource.RemoveCurrent()
   CasesTableAdapter.Update(CasesDataSet.Cases)
   CasesTableAdapter.Fill(CasesDataSet.Cases)
End Sub

Is there something I need to do in order for changes to appear in the
DataGridView?  Calling the Refresh method does not cause the changes to
appear.

Thanks in advance for your assistance.