protected void btnExportXML_Click(object sender, EventArgs e) { if (Page.IsValid) { try { string fileName = string.Format("orders_{0}.xml", DateTime.Now.ToString("yyyy-MM-dd-HH-mm-ss")); OrderCollection orders = GetOrders(); string xml = ExportManager.ExportOrdersToXML(orders); CommonHelper.WriteResponseXML(xml, fileName); } catch (Exception exc) { ProcessException(exc); } } }