Drucken Sie einen txt auf den Standarddrucker mit C#

Question

Gibt es eine Möglichkeit, eine TXT an einen Drucker mit C# zu senden?

so etwas wie

string doc = "c:\temp.txt"; 
sendToPrinter(doc); 

Answer 1

MSDN

Answer 2

Dies ist, was ich vor kurzem verwendet haben.

public void Print(FileInfo file) 
{ 
    ProcessStartInfo psi = new ProcessStartInfo(); 
    psi.FileName = "print"; 
    psi.Arguments = string.Format("/D:\"{0}\" \"{1}\"", Printer, file.FullName); 
    psi.CreateNoWindow = true; 
    psi.UseShellExecute = false; 

    Process p = new Process(); 
    p.StartInfo = psi; 
    p.Start(); 

    while (!p.HasExited) ; 
} 

Answer 3

MS hat ein neueres Dokument für .NET auf How to: Print a Multi-Page Text File in Windows Forms für .NET 2.0, 3.0, 3.5 und 4.0.

Es ist im Wesentlichen eine neuere, vollständige Version des Dokuments in luvieere Antwort, die für NET 1.1

Answer 4

kommentiert eine alte Post geschrieben wurde, aber da dies erscheint in den ersten Positionen eines Google up Suche nach "C# sende Textzeichenfolge an Drucker", ich dachte, ich würde die Ergebnisse von dem hinzufügen, was ich gefunden habe ... jemanden anderen die paar Stunden des Grabens retten.

Manchmal müssen wir Text direkt an einen Drucker senden - POS-Belegdrucker, Zebra-Etikettendrucker, alte Nadeldrucker, PCL-Befehle oder andere Escape-Sequenzen an einen HP-Drucker senden oder rohe Postscript-Dateien senden. Die normalen PrintDocument-Methoden sind nicht geeignet.

Microsoft hat einen Knowledge Base-Artikel (322091), die eine Methode, dies zu tun liefert, how-to-send-raw-data-to-a-printer-by-using-visual-c-.net

Das Verfahren umfasst Teile der WinAPI als DLLimports aufrufen.

Falls die Originaldatei bewegt oder verschwindet, habe ich das Herz des Verfahrens hier kopiert,

using System; 
using System.Drawing; 
using System.Drawing.Printing; 
using System.Windows.Forms; 
using System.IO; 
using System.Runtime.InteropServices;  



private void button1_Click(object sender, System.EventArgs e) 
     { 
      // Allow the user to select a file. 
      OpenFileDialog ofd = new OpenFileDialog(); 
      if(DialogResult.OK == ofd.ShowDialog(this)) 
      { 
       // Allow the user to select a printer. 
       PrintDialog pd = new PrintDialog(); 
       pd.PrinterSettings = new PrinterSettings(); 
       if(DialogResult.OK == pd.ShowDialog(this)) 
       { 
        // Print the file to the printer. 
        RawPrinterHelper.SendFileToPrinter(pd.PrinterSettings.PrinterName, ofd.FileName); 
       } 
      } 

    } 

private void button2_Click(object sender, System.EventArgs e) 
{ 
    string s = "Hello"; // device-dependent string, need a FormFeed? 

    // Allow the user to select a printer. 
    PrintDialog pd = new PrintDialog(); 
    pd.PrinterSettings = new PrinterSettings(); 
    if(DialogResult.OK == pd.ShowDialog(this)) 
    { 
     // Send a printer-specific to the printer. 
     RawPrinterHelper.SendStringToPrinter(pd.PrinterSettings.PrinterName, s); 
    } 
} 

public class RawPrinterHelper 
{ 
    // Structure and API declarions: 
    [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(); 
    bool bSuccess = false; // Assume failure unless you specifically succeed. 

    di.pDocName = "My C#.NET RAW Document"; 
    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 your bytes. 
       bSuccess = WritePrinter(hPrinter, pBytes, dwCount, out dwWritten); 
       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. 
    FileStream fs = new FileStream(szFileName, FileMode.Open); 
    // Create a BinaryReader on the file. 
    BinaryReader br = new BinaryReader(fs); 
    // Dim an array of bytes big enough to hold the file's contents. 
    Byte []bytes = new Byte[fs.Length]; 
    bool bSuccess = false; 
    // 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; 
} 
public static bool SendStringToPrinter(string szPrinterName, string szString) 
{ 
    IntPtr pBytes; 
    Int32 dwCount; 
    // How many characters are in the string? 
    dwCount = szString.Length; 
    // Assume that the printer is expecting ANSI text, and then convert 
    // the string to ANSI text. 
    pBytes = Marshal.StringToCoTaskMemAnsi(szString); 
    // Send the converted ANSI string to the printer. 
    SendBytesToPrinter(szPrinterName, pBytes, dwCount); 
    Marshal.FreeCoTaskMem(pBytes); 
    return true; 
} 

}