rptchecklist rptCL = new rptchecklist();
			
			rptCL.SetDataSource(dsReport);
			rptCL.Refresh();
			Session["rptCL"] = rptCL;
					
		
			// Создаем отчет в pdf-файле
			CrystalDecisions.Shared.ExportOptions myExportOptions = new CrystalDecisions.Shared.ExportOptions();
			CrystalDecisions.Shared.DiskFileDestinationOptions myDiskOptions = new CrystalDecisions.Shared.DiskFileDestinationOptions();

			//string FileName = Server.MapPath("/") + "\\" + Session.SessionID.ToString() + ".pdf";
			string FileName = Server.MapPath("/") + "\\" + Session.SessionID.ToString() + ".pdf";
			
			myDiskOptions.DiskFileName = FileName;

			myExportOptions = rptCL.ExportOptions;

			myExportOptions.DestinationOptions = myDiskOptions;
			myExportOptions.ExportDestinationType = CrystalDecisions.Shared.ExportDestinationType.DiskFile;
			myExportOptions.ExportFormatType = CrystalDecisions.Shared.ExportFormatType.PortableDocFormat;

			rptCL.Export();
			
			RegisterStartupScript("opennewwindow","<script>window.open('preview.aspx?id="+Session.SessionID.ToString()+"').focus(); </script>");

			if (!Page.IsPostBack)
			{
				Response.ClearContent();
				Response.ClearHeaders();
				Response.ContentType = "application/pdf";
				Response.WriteFile(Server.MapPath("/") + "\\" + Request.QueryString["id"].ToString()+".pdf");
				Response.Flush();
				Response.Close();
				System.IO.File.Delete(Request.Params["FileName"].ToString());
			}

System.IO.File.Delete(Request.Params["FileName"].ToString());

					MemoryStream oStream; // using System.IO
					oStream = (MemoryStream)rptCL.ExportToStream(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat);
					Response.Clear();           
					Response.Buffer= true;
					Response.ContentType = "application/pdf";
					Response.BinaryWrite(oStream.ToArray());
					Response.End();