void btnExportToCSVWithDetail_Click(object sender, EventArgs e)
{
var selectedInvoiceIds = GetSelectedInvoiceIds();
if (selectedInvoiceIds.Any())
{
Facade.IInvoice facInvoice = new Facade.Invoice();
var invoiceIDs = string.Empty;
foreach (int i in selectedInvoiceIds)
{
invoiceIDs += i.ToString() + ",";
}
invoiceIDs = invoiceIDs.Substring(0, invoiceIDs.Length - 1);
DataSet ds = facInvoice.GetForExportWithDetail(invoiceIDs);
Session["__ExportDS"] = ds.Tables[0];
Server.Transfer("../Reports/csvexport.aspx?filename=InvoiceAudit.csv");
}
}