private void ToExcelButton_Click(object sender, EventArgs e)
        {
            if (ClientsPaymentsDataGrid.ColumnCount != 0)
            {
                Thread T = new Thread(delegate() { SplashWindow.CreateSmallSplash(ref TopForm, "Создание документа Excel.\r\nПодождите..."); });
                T.Start();

                while (!SplashWindow.bSmallCreated)
                {
                    ClientPayments.ExportToExcel();
                }

                while (SplashWindow.bSmallCreated)
                {
                    SmallWaitForm.CloseS = true;
                }
            }
        }