Private Sub AdjustColumnOrder()

    With customersDataGridView
        .Columns("CustomerID").Visible = False
        .Columns("ContactName").DisplayIndex = 0
        .Columns("ContactTitle").DisplayIndex = 1
        .Columns("City").DisplayIndex = 2
        .Columns("Country").DisplayIndex = 3
        .Columns("CompanyName").DisplayIndex = 4
    End With

End Sub

private void AdjustColumnOrder()
{
    customersDataGridView.Columns["CustomerID"].Visible = false;
    customersDataGridView.Columns["ContactName"].DisplayIndex = 0;
    customersDataGridView.Columns["ContactTitle"].DisplayIndex = 1;
    customersDataGridView.Columns["City"].DisplayIndex = 2;
    customersDataGridView.Columns["Country"].DisplayIndex = 3;
    customersDataGridView.Columns["CompanyName"].DisplayIndex = 4;
}