Printing rdlc report without preview in web application in IIS mode

Question

There is code in MSDN for printing rdlc without preview in web application but it does not work when i implement in IIS...is there any solution for this ....or any code which work in on print of rdlc without preview here is the link http://msdn.microsoft.com/en-us/library/ms252091.aspx It does not give any exception but also does not print the report on MSDN they said create a console application but I need it in asp.net web application which run in IIS.

using System;
using System.IO;
using System.Data;
using System.Text;
using System.Drawing.Imaging;
using System.Drawing.Printing;
using System.Collections.Generic;
using Microsoft.Reporting.WebForms;
using System.Data.SqlClient;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Windows.Forms;

///<summary>
/// Summary description for Printing

/// this is the cool code found on MSDN site to print labels out without preview

/// abhay maini

///</summary>

publicclassPrinting : IDisposable

{

public Printing()
{

//

// TODO: Add constructor logic here

//

}

publicint m_currentPageIndex;
publicIList<Stream> m_streams;

// Routine to provide to the report renderer, in order to

// save an image for each page of the report.

publicStream CreateStream(string name,string fileNameExtension, Encoding encoding,string mimeType, bool willSeek)
{

string CurrentDrive;

CurrentDrive = Application.StartupPath.ToString();Stream stream = newFileStream("C:\\Labels\\" + name + "." + fileNameExtension, FileMode.Create);
m_streams.Add(stream);



return stream;
}

publicvoid Export(LocalReport report)
{

string deviceInfo =
"<DeviceInfo>" +

" <OutputFormat>EMF</OutputFormat>" +
" <PageWidth>4.0in</PageWidth>" +

" <PageHeight>2.0in</PageHeight>" +
" <MarginTop>0.00in</MarginTop>" +

" <MarginLeft>0.00in</MarginLeft>" +
" <MarginRight>0.00in</MarginRight>" +

" <MarginBottom>0.00in</MarginBottom>" +
"</DeviceInfo>";

Warning[] warnings;m_streams = newList<Stream>();


report.Render("Image", deviceInfo, CreateStream, out warnings);

foreach (Stream stream in m_streams)
stream.Position = 0;

}

// Handler for PrintPageEvents

publicvoid PrintPage(object sender, PrintPageEventArgs ev)
{

Metafile pageImage = newMetafile(m_streams[m_currentPageIndex]);
ev.Graphics.DrawImage(pageImage, ev.PageBounds);

m_currentPageIndex++;

ev.HasMorePages = (m_currentPageIndex < m_streams.Count);

}

publicvoid Print(string PrinterName)
{

// const string printerName = PrinterName;



if (m_streams == null || m_streams.Count == 0)
return;

PrintDocument printDoc = newPrintDocument();
printDoc.PrinterSettings.PrinterName = PrinterName;

if (!printDoc.PrinterSettings.IsValid)
{

string msg = String.Format(
"Can't find printer \"{0}\".", PrinterName);

MessageBox.Show(msg, "Print Error");return;
}

printDoc.PrintPage += newPrintPageEventHandler(PrintPage);
printDoc.Print();

}

// Create a local report for Report.rdlc, load the data,

// export the report to an .emf file, and print it.

publicvoid Run(string ReportName, string PrinterName, DataTable MyDataTable,string DSstring)
{

LocalReport report = newLocalReport();
report.ReportPath = ReportName;

report.DataSources.Clear();

report.DataSources.Add(newReportDataSource(DSstring, MyDataTable));
Export(report);

m_currentPageIndex = 0;

Print(PrinterName);

}

publicvoid Dispose()
{

if (m_streams != null)
{

foreach (Stream stream in m_streams)
stream.Close();

m_streams = null;
}

}



}





The above class can be called as below behind text change event:



protectedvoid TxtScanId_TextChanged(object sender, EventArgs e)
{

string sqlPrintScanID = "SELECT [ScanID], [LoadID], [tempVRMA], [CustPalletID], [TypeOfAsset] FROM [SerialScanDetail] WHERE [ScanID]=" + TxtScanId.Text + "";
string strConnection = ConfigurationManager.ConnectionStrings["RevisionConnectionString"].ToString();

SqlConnection conn = newSqlConnection(strConnection);
SqlDataAdapter da = newSqlDataAdapter();

da.SelectCommand = newSqlCommand(sqlPrintScanID, conn);
DataSet ds = newDataSet();

da.Fill(ds, "RevisionDataSet_SerialScanDetail");
//ReportViewer1.LocalReport.Refresh();

NewPrinting.Run(@"Reports\Report_ScanID.rdlc", "Eltron 2442", ds.Tables[0], "RevisionDataSet_SerialScanDetail");


}

Answer 1

I would suggest making use of the ReportViewer class.

        ReportViewer reportViewer = new ReportViewer();
        reportViewer.LocalReport.ReportPath = "ReportPath";
        reportViewer.LocalReport.DataSources.Add(new ReportDataSource("data", data));
        byte[] byteInfo;

        byteInfo = reportViewer.LocalReport.Render("Image", deviceInfo, CreateStream, out warnings);
        MemoryStream ms = new MemoryStream(byteInfo);
        Image returnImage = Image.FromStream(ms);

returnImage is then an image data type that you can display/print.

I see you making a call to render but not assigning the value to use, this combined with not using a report viewer could be the problem.

The reason MSDN suggest making a console application is that it is a good idea to do a proof of concept in a basic program such as a console, get the result you want, then port that code into your desired environment.