Question

我正在尝试自动化我们的日常打印作业之一。

在旧的VBA计划上...... 我们正在创建水晶报告，抓取8 1/2 x 11 pdf，然后抓取11 x 17 pdf

程序然后按顺序打印这些。它们都被发送到同一台打印机，但11 x 17 pdf使用另一个专门用于纸张尺寸的驱动程序。这两个pdf都在adobe中打印并打印出来。

我们现在正试图在C＃中做同样的事情，除非没有炮轰。仍然为打印机设置了两个驱动程序，我一直在尝试将原始数据直接发送给它们，但我仍有一个问题......

11 x 17 pdf不是＆＃34; true＆＃34; 11 x 17（有时12.8 x 18.4等）。这会导致打印机停止打印（甚至显示为脱机状态），直到您从物理打印机中选择一个纸盘并单击开始。

我和司机一起玩过足以相信驾驶员不是问题，但程序是罪魁祸首。我正在尝试使用winspool来完成这个过程，但不知道这是否是正确的方法。

namespace WorkOrderMass.Helper
{
public class RawPrinterHelper
    {[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
        public 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)]
        public 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)]
        public static extern bool ClosePrinter(IntPtr hPrinter);

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

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

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

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


    // SendBytesToPrinter()
    // When the function is given a printer name and an unmanaged array
    // of bytes, the function sends those bytes to the print queue.
    // Returns true on success, false on failure.
    public static bool SendBytesToPrinter(string szPrinterName, IntPtr pBytes, Int32 dwCount)
    {
        Int32 dwError = 0, dwWritten = 0;
        IntPtr hPrinter = new IntPtr(0);
        DOCINFOA di = new DOCINFOA();
        PrinterSettings ps = new PrinterSettings();
        bool bSuccess = false; // Assume failure unless you specifically succeed.

        di.pDocName = "PDF Document";
        di.pDataType = "RAW";

        PrintDocument pd = new PrintDocument();
        pd.DefaultPageSettings.PaperSize = new PaperSize("PaperA3", 840, 1180);
        pd.Print();


        // 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 your bytes.
                    bSuccess = WritePrinter(hPrinter, pBytes, dwCount, out dwWritten);
                    System.Threading.Thread.Sleep(5000);
                    EndPagePrinter(hPrinter);
                }
                EndDocPrinter(hPrinter);
            }
            ClosePrinter(hPrinter);
        }
        // If you did not succeed, GetLastError may give more information
        // about why not.
        if (bSuccess == false)
        {
            dwError = Marshal.GetLastWin32Error();
        }
        return bSuccess;
    }

    public static bool SendFileToPrinter(string szPrinterName, string szFileName)
    {
        // Open the file.
        bool bSuccess = true;
        using (FileStream fs = new FileStream(szFileName, FileMode.Open))
        {
            using (BinaryReader br = new BinaryReader(fs))
            {
                Byte[] bytes = new Byte[fs.Length];

                // Your unmanaged pointer.
                IntPtr pUnmanagedBytes = new IntPtr(0);
                int nLength;

                nLength = Convert.ToInt32(fs.Length);
                // Read the contents of the file into the array.
                bytes = br.ReadBytes(nLength);
                // Allocate some unmanaged memory for those bytes.
                pUnmanagedBytes = Marshal.AllocCoTaskMem(nLength);
                // Copy the managed byte array into the unmanaged array.
                Marshal.Copy(bytes, 0, pUnmanagedBytes, nLength);
                // Send the unmanaged bytes to the printer.

                bSuccess = SendBytesToPrinter(szPrinterName, pUnmanagedBytes, nLength);
                // Free the unmanaged memory that you allocated earlier.
                Marshal.FreeCoTaskMem(pUnmanagedBytes);
            }
        }
        return bSuccess;
    }
}

}`

Answer 1

答案：程序现在正在使用SumantraPDF静默打印PDF文件。

使用Crystal Reports和PDF自动打印

1 个答案: