Printing a Report Server-Side and Silently

Question

I am trying to write a program that allows me to print a ssrs report(.rdl file) from the server-side code to a predetermined printer without any pop ups asking me which prin

Answer 1

First of all you need to render your SSRS report into PDF format and then you can print the PDF file directly without opening any popup, Refer to code below:

    public void PrintPreviewSSRSReport(string reportName)
    {
        try
        {
            string reportPath = string.Empty;
            string historyID = null;
            string deviceInfo = null;
            string extension = null;
            string encoding = null;
            string mimeType = null;
            string[] streamIDs = null;
            string format = "PDF";
            Byte[] result;

            ReportExecution2005.Warning[] warnings = null;
            ExecutionInfo execInfo = new ExecutionInfo();
            TrustedUserHeader trusteduserHeader = new TrustedUserHeader();
            ExecutionHeader execHeader = new ExecutionHeader();
            ServerInfoHeader serviceInfo = new ServerInfoHeader();
            MHTools.ReportExecution2005.ReportParameter[] _parameters = null;
            ParameterValue[] _ParameterValue = null;

            //Set the report path
            reportPath = "/Reports/SalesReport";

            //Create the object of report execution web service
            ReportExecutionServiceSoapClient rsExec = new ReportExecutionServiceSoapClient();

            //Use this if you don't need to pass the credentials from code
            rsExec.ClientCredentials.Windows.AllowedImpersonationLevel = System.Security.Principal.TokenImpersonationLevel.Impersonation;

            //Load the reports 
            rsExec.LoadReport(trusteduserHeader, reportPath, historyID, out serviceInfo, out execInfo);
            execHeader.ExecutionID = execInfo.ExecutionID;

            //Get the parameters details from load report and eet the value in paremeters if any
            _parameters = execInfo.Parameters;
            _ParameterValue = new ParameterValue[1];
            _ParameterValue[0] = new ParameterValue();
            _ParameterValue[0].Name = _parameters[0].Name;
            _ParameterValue[0].Value = "12345";

            //Set the parameters
            rsExec.SetExecutionParameters(execHeader, null, _ParameterValue, "en-us", out execInfo);

            //Render the report
            rsExec.Render(execHeader, null, format, deviceInfo, out result, out extension, out mimeType, out encoding, out warnings, out streamIDs);


            //pass the file path where pdf file will be saved
            using (FileStream stream = File.OpenWrite(PDFFile))
            {
                stream.Write(result, 0, result.Length);
            }

            //send the padf file path to printer
            SendFileToPrinter(PDFFile);

        }
        catch (Exception ex)
        {
            //
        }
    }


    #region Print SSRS Report

    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    private class DOCINFOA
    {
        [MarshalAs(UnmanagedType.LPStr)]
        public string pDocName;
        [MarshalAs(UnmanagedType.LPStr)]
        public string pOutputFile;
        [MarshalAs(UnmanagedType.LPStr)]
        public string pDataType;
    }

    [DllImport("winspool.Drv", EntryPoint = "OpenPrinterA", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    private static extern bool OpenPrinter([MarshalAs(UnmanagedType.LPStr)] string szPrinter, out IntPtr hPrinter, IntPtr pd);

    [DllImport("winspool.Drv", EntryPoint = "ClosePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    private static extern bool ClosePrinter(IntPtr hPrinter);

    [DllImport("winspool.Drv", EntryPoint = "StartDocPrinterA", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    private static extern bool StartDocPrinter(IntPtr hPrinter, Int32 level, [In, MarshalAs(UnmanagedType.LPStruct)] DOCINFOA di);

    [DllImport("winspool.Drv", EntryPoint = "EndDocPrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    private static extern bool EndDocPrinter(IntPtr hPrinter);

    [DllImport("winspool.Drv", EntryPoint = "StartPagePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    private static extern bool StartPagePrinter(IntPtr hPrinter);

    [DllImport("winspool.Drv", EntryPoint = "EndPagePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    private static extern bool EndPagePrinter(IntPtr hPrinter);

    [DllImport("winspool.Drv", EntryPoint = "WritePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
    private static extern bool WritePrinter(IntPtr hPrinter, IntPtr pBytes, Int32 dwCount, out Int32 dwWritten);

    [DllImport("winspool.drv", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern bool GetDefaultPrinter(StringBuilder pszBuffer, ref int size);

    /// 

    /// This function gets the pdf file name.
    /// This function opens the pdf file, gets all its bytes & send them to print.
    /// 
    /// Printer Name
    /// Pdf File Name
    /// true on success, false on failure
    public bool SendFileToPrinter(string pdfFileName)
    {
        try
        {
            #region Get Connected Printer Name
            PrintDocument pd = new PrintDocument();
            StringBuilder dp = new StringBuilder(256);
            int size = dp.Capacity;
            if (GetDefaultPrinter(dp, ref size))
            {
                pd.PrinterSettings.PrinterName = dp.ToString().Trim();
            }
            #endregion Get Connected Printer Name

            // Open the PDF file.
            FileStream fs = new FileStream(pdfFileName, FileMode.Open);
            // Create a BinaryReader on the file.
            BinaryReader br = new BinaryReader(fs);
            Byte[] bytes = new Byte[fs.Length];
            bool success = false;
            // Unmanaged pointer.
            IntPtr ptrUnmanagedBytes = new IntPtr(0);
            int nLength = Convert.ToInt32(fs.Length);
            // Read contents of the file into the array.
            bytes = br.ReadBytes(nLength);
            // Allocate some unmanaged memory for those bytes.
            ptrUnmanagedBytes = Marshal.AllocCoTaskMem(nLength);
            // Copy the managed byte array into the unmanaged array.
            Marshal.Copy(bytes, 0, ptrUnmanagedBytes, nLength);
            // Send the unmanaged bytes to the printer.
            success = SendBytesToPrinter(pd.PrinterSettings.PrinterName, ptrUnmanagedBytes, nLength);
            // Free the unmanaged memory that you allocated earlier.
            Marshal.FreeCoTaskMem(ptrUnmanagedBytes);
            return success;
        }
        catch (Exception ex)
        {
            throw new Exception(ex.Message);
        }
    }

    /// 

    /// This function gets the printer name and an unmanaged array of bytes, the function sends those bytes to the print queue.
    /// 
    /// Printer Name
    /// No. of bytes in the pdf file
    /// Word count
    /// True on success, false on failure
    private bool SendBytesToPrinter(string szPrinterName, IntPtr pBytes, Int32 dwCount)
    {
        try
        {
            Int32 dwError = 0, dwWritten = 0;
            IntPtr hPrinter = new IntPtr(0);
            DOCINFOA di = new DOCINFOA();
            bool success = false; // Assume failure unless you specifically succeed.

            di.pDocName = Path.GetFileNameWithoutExtension(PDFFile);
            di.pDataType = "RAW";

            // Open the printer.
            if (OpenPrinter(szPrinterName.Normalize(), out hPrinter, IntPtr.Zero))
            {
                // Start a document.
                if (StartDocPrinter(hPrinter, 1, di))
                {
                    // Start a page.
                    if (StartPagePrinter(hPrinter))
                    {
                        // Write the bytes.
                        success = WritePrinter(hPrinter, pBytes, dwCount, out dwWritten);
                        EndPagePrinter(hPrinter);
                    }
                    EndDocPrinter(hPrinter);
                }
                ClosePrinter(hPrinter);
            }

            // If print did not succeed, GetLastError may give more information about the failure.
            if (success == false)
            {
                dwError = Marshal.GetLastWin32Error();
            }
            return success;
        }
        catch (Exception ex)
        {
            throw new Exception(ex.Message);
        }
    }

    #endregion