private void Button3_Click(object sender, System.EventArgs e)  // this is the code for exporting REport to desired format
        {
                    
                            
        this.fileName = Server.MapPath("/NewQCDS/Project/ReportsFile/test.pdf");   // this is destination file
        string strrptfile=Server.MapPath("/NewQCDS/Reports/rptAllocatedEmployee.rpt").ToString();   // rpt file       
        
        this.crDiskFileDestinationOptions = new DiskFileDestinationOptions();
        this.crDiskFileDestinationOptions.DiskFileName = this.fileName;

    
                            rpt.SetDataSource(objReportForm.fnGetRptAllocatedEmployee(int.Parse(Request.QueryString["ProjectID"].ToString()),int.Parse(Request.QueryString["Cmonth"].ToString()),int.Parse(Request.QueryString["ProjectID"].ToString())));
                             
                            this.crExportOptions = this.rpt.ExportOptions;                 
            
                            this.crExportOptions.DestinationOptions = this.crDiskFileDestinationOptions;
                        
                            this.crExportOptions.ExportDestinationType = ExportDestinationType.DiskFile;
            
                            this.crExportOptions.ExportFormatType = ExportFormatType.PortableDocFormat;
                            
                            
                            
            
            if(rpt.IsLoaded==true)
            {
            
                this.rpt.Export();
            }                 
                             
            
            
                            Response.ClearContent();
                            Response.ClearHeaders();
                            Response.ContentType = "application/pdf";
            
                            Response.WriteFile(this.fileName);
            
                            Response.Flush();
            
                            Response.Close();
            

        }
    }
}