Предпросмотр таблицы перед печатью

// The printing setup function
private bool SetupThePrinting()
{
    PrintDialog MyPrintDialog = new PrintDialog();
    MyPrintDialog.AllowCurrentPage = false;
    MyPrintDialog.AllowPrintToFile = false;
    MyPrintDialog.AllowSelection = false;
    MyPrintDialog.AllowSomePages = false;
    MyPrintDialog.PrintToFile = false;
    MyPrintDialog.ShowHelp = false;
    MyPrintDialog.ShowNetwork = false;
// Здесь ==, а не !=
    if (MyPrintDialog.ShowDialog() == DialogResult.OK)
        return false;
 
    MyPrintDocument.DocumentName = "Customers Report";
    MyPrintDocument.PrinterSettings = 
                        MyPrintDialog.PrinterSettings;
    MyPrintDocument.DefaultPageSettings =
    MyPrintDialog.PrinterSettings.DefaultPageSettings;
    MyPrintDocument.DefaultPageSettings.Margins = 
                     new Margins(40, 40, 40, 40);
 
    if (MessageBox.Show("Do you want the report to be centered on the page",
        "InvoiceManager - Center on Page", MessageBoxButtons.YesNo,
        MessageBoxIcon.Question) == DialogResult.Yes)
        MyDataGridViewPrinter = new DataGridViewPrinter(MyDataGridView,
        MyPrintDocument, true, true, "Customers", new Font("Tahoma", 18,
        FontStyle.Bold, GraphicsUnit.Point), Color.Black, true);
    else
        MyDataGridViewPrinter = new DataGridViewPrinter(MyDataGridView,
        MyPrintDocument, false, true, "Customers", new Font("Tahoma", 18,
        FontStyle.Bold, GraphicsUnit.Point), Color.Black, true);
 
    return true;
}