Прежде всего вам необходимо преобразовать отчет SSRS в формат PDF, а затем распечатать файл PDF напрямую, не открывая всплывающее окно. См. Код ниже:
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);
/// <summary>
/// This function gets the pdf file name.
/// This function opens the pdf file, gets all its bytes & send them to print.
/// </summary>
/// <param name="szPrinterName">Printer Name</param>
/// <param name="szFileName">Pdf File Name</param>
/// <returns>true on success, false on failure</returns>
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);
}
}
/// <summary>
/// This function gets the printer name and an unmanaged array of bytes, the function sends those bytes to the print queue.
/// </summary>
/// <param name="szPrinterName">Printer Name</param>
/// <param name="pBytes">No. of bytes in the pdf file</param>
/// <param name="dwCount">Word count</param>
/// <returns>True on success, false on failure</returns>
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