private object PurgeAll(DateTime deleteDate, BackgroundWorker worker, DoWorkEventArgs e)
{
(new CommonManager()).BeginBatchOperation();
TransactionManager tm = new TransactionManager();
//get a list of all customers
List <Customer> customers = (new CustomerManager()).GetAllCustomers();
foreach (Customer customer in customers)
{
if (worker.CancellationPending)
{
e.Cancel = true;
}
else
{
worker.ReportProgress((int)((double)customers.IndexOf(customer) / (double)customers.Count * 100.0), "Deleting Sale/Purchase data of " + customer.Name);
tm.DeleteAllTransactionsBefore(customer.ID, deleteDate, true);
}
}
//now delete expenses till the date..
ExpenseManager em = new ExpenseManager();
List <Expense> expenses = em.GetExpenses(new DateTime(1900, 1, 1), deleteDate);
foreach (Expense expense in expenses)
{
em.DeleteExpenseById(expense.ID);
worker.ReportProgress((int)((double)expenses.IndexOf(expense) / (double)expenses.Count * 100.0), "Deleting Expense Data of " + expense.TimeStamp.ToShortDateString());
}
(new CommonManager()).ConfirmBatchOperation();
return(null);
}