在不预览的情况下打印本地报表

using System;

using System.IO;

using System.Data;

using System.Text;

using System.Drawing.Imaging;

using System.Drawing.Printing;

using System.Collections.Generic;

using System.Windows.Forms;

using Microsoft.Reporting.WinForms;



public class Demo : IDisposable

{

    private int m_currentPageIndex;

    private IList<Stream> m_streams;



    private DataTable LoadSalesData()

    {

        // Create a new DataSet and read sales data file 

        //    data.xml into the first DataTable.

        DataSet dataSet = new DataSet();

        dataSet.ReadXml(@"..\..\data.xml");

        return dataSet.Tables[0];

    }

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

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

    private Stream CreateStream(string name,

      string fileNameExtension, Encoding encoding,

      string mimeType, bool willSeek)

    {

        Stream stream = new MemoryStream();

        m_streams.Add(stream);

        return stream;

    }

    // Export the given report as an EMF (Enhanced Metafile) file.

    private void Export(LocalReport report)

    {

        string deviceInfo =

          @"<DeviceInfo>

                <OutputFormat>EMF</OutputFormat>

                <PageWidth>8.5in</PageWidth>

                <PageHeight>11in</PageHeight>

                <MarginTop>0.25in</MarginTop>

                <MarginLeft>0.25in</MarginLeft>

                <MarginRight>0.25in</MarginRight>

                <MarginBottom>0.25in</MarginBottom>

            </DeviceInfo>";

        Warning[] warnings;

        m_streams = new List<Stream>();

        report.Render("Image", deviceInfo, CreateStream,

           out warnings);

        foreach (Stream stream in m_streams)

            stream.Position = 0;

    }

    // Handler for PrintPageEvents

    private void PrintPage(object sender, PrintPageEventArgs ev)

    {

        Metafile pageImage = new

           Metafile(m_streams[m_currentPageIndex]);



        // Adjust rectangular area with printer margins.

        Rectangle adjustedRect = new Rectangle(

            ev.PageBounds.Left - (int)ev.PageSettings.HardMarginX,

            ev.PageBounds.Top - (int)ev.PageSettings.HardMarginY,

            ev.PageBounds.Width,

            ev.PageBounds.Height);



        // Draw a white background for the report

        ev.Graphics.FillRectangle(Brushes.White, adjustedRect);



        // Draw the report content

        ev.Graphics.DrawImage(pageImage, adjustedRect);



        // Prepare for the next page. Make sure we haven't hit the end.

        m_currentPageIndex++;

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

    }



    private void Print()

    {

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

            throw new Exception("Error: no stream to print.");

        PrintDocument printDoc = new PrintDocument();

        if (!printDoc.PrinterSettings.IsValid)

        {

            throw new Exception("Error: cannot find the default printer.");

        }

        else

        {

            printDoc.PrintPage += new PrintPageEventHandler(PrintPage);

            m_currentPageIndex = 0;

            printDoc.Print();

        }

    }

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

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

    private void Run()

    {

        LocalReport report = new LocalReport();

        report.ReportPath = @"..\..\Report.rdlc";

        report.DataSources.Add(

           new ReportDataSource("Sales", LoadSalesData()));

        Export(report);

        Print();

    }



    public void Dispose()

    {

        if (m_streams != null)

        {

            foreach (Stream stream in m_streams)

                stream.Close();

            m_streams = null;

        }

    }



    public static void Main(string[] args)

    {

        using (Demo demo = new Demo())

        {

            demo.Run();

        }

    }

}

文章来源：http://msdn.microsoft.com/zh-cn/library/ms252091(v=vs.100).aspx