Save Customer Product details with subreport in .pdf on button click

 protected void Button1_Click(object sender, EventArgs e)
        {
            try
            {
                DataTable dtEmployeeDetail = report.GetEmployeeDetailCompensation(2, 4, "a");
                if (dtEmployeeDetail.Rows.Count > 0)
                {
                    strSubmitDate = dtEmployeeDetail.Rows[0]["EAP_ClosedOn"].ToString();
                    ReportDataSource datasource = new ReportDataSource("DataSet1", dtEmployeeDetail);
                    ReportViewer ReportViewer1 = new ReportViewer();
                    ReportViewer1.Reset();
                    ReportViewer1.LocalReport.ReportPath = Server.MapPath("~/EmpReports/rptEmployeeCompensationDetails.rdlc");
                    ReportViewer1.LocalReport.EnableExternalImages = true;
                    ReportViewer1.LocalReport.DataSources.Clear();
                    ReportViewer1.LocalReport.DataSources.Add(datasource);
                    ReportViewer1.LocalReport.SubreportProcessing += new SubreportProcessingEventHandler(LocalReport_SubreportProcessing);
                    ReportViewer1.LocalReport.Refresh();
                    string fileName = "EmpCompensationDetails_" + Convert.ToDateTime(DateTime.Now).ToString("MMddyyyyhhmm") + ".pdf";
                    //string fileName = Server.MapPath("~/EmpReports/TempReportOutputs/EmpCompensationDetails_") + Convert.ToDateTime(DateTime.Now).ToString("MMddyyyyhhmm") + ".pdf";
                   // bool success = ByteArrayToFile(fileName, GetExportedBytes(ReportViewer1.LocalReport, ReportFormat.PDF));
                    //if (success)
                    //{
                        try
                        {
                            SendMail(fileName, GetExportedBytes(ReportViewer1.LocalReport,ReportFormat.PDF));
                           
                        }
                        catch (Exception ex)
                        {
                            System.IO.File.Delete(fileName);
                        }
                   // }
                }
            }
            catch (Exception ex)
            {
            }
        }
 void LocalReport_SubreportProcessing(object sender, SubreportProcessingEventArgs e)
        {
          
                DataTable dtEmployeeCompensation = report.GetEmployeeCompensationStructure(2,4, "a");
                if (dtEmployeeCompensation.Rows.Count > 0)
                {
                    // string strParameter = e.Parameters["BecRef"].Values[0].ToString();
                    ReportDataSource rdS = new ReportDataSource("DataSet1", dtEmployeeCompensation);
                    e.DataSources.Add(rdS);
                }
        }
private void SendMail(string fileName, byte[] _ByteArray)
        {
            System.IO.MemoryStream stream = new System.IO.MemoryStream(_ByteArray);
            System.Net.Mail.Attachment attachment = new System.Net.Mail.Attachment(stream, fileName);
                   
            //BusinessLayer.Mail mail = new BusinessLayer.Mail();
            //mail.EmailSend("from", "to", "bcc", "subject", CreateEmailBody(), new System.Net.Mail.Attachment(fileName));
           
        }
public static byte[] GetExportedBytes(LocalReport lr, ReportFormat fmt)
        {
            byte[] toReturn = null;
            Warning[] warnings;
            string[] streamids;
            string mimeType;
            string encoding;
            string filenameExtension;
            toReturn = lr.Render(fmt.ToString(), null, out mimeType, out encoding, out filenameExtension, out streamids, out warnings);
            return toReturn;
        }
public enum ReportFormat
        {
            PDF,
            Word,
            Excel,
            Image
        }
//Save bytes in a File
public bool ByteArrayToFile(string _FileName, byte[] _ByteArray)
        //{
        //    try
        //    {
        //        // Open file for reading
        //        System.IO.FileStream _FileStream = new System.IO.FileStream(_FileName, System.IO.FileMode.Create, System.IO.FileAccess.Write);
        //        // Writes a block of bytes to this stream using data from a byte array.
        //        _FileStream.Write(_ByteArray, 0, _ByteArray.Length);
        //        // close file stream .
        //        _FileStream.Close();
        //        return true;
        //    }
        //    catch (Exception _Exception)
        //    {
        //        // Error            
        //        //lblMsg.Text = string.Format("Exception caught in process: {0}", _Exception.ToString());
        //    }
        //    return false;
        //}