Programmatically “hello world” default SERVER-side

问题:

I have the printer installed and working on an intranet server and I want to programmatically send "hello world" to that default printer. This seems like the simplest thing but I've been googling for a couple hours with no success. (note: I am developing asp.net mvc on the deployment machine itself which is running Windows 7)

I tried to translate an example from VB here into C# but it said "no printers are installed".

public void TestPrint()
{
    var x = new PrintDocument();
    x.PrintPage += new PrintPageEventHandler(PrintPage);
    x.Print();
}
private void PrintPage(Object sender, PrintPageEventArgs e)
{
    var textToPrint = "Hello world";
    var printFont = new Font("Courier New", 12);
    var leftMargin = e.MarginBounds.Left;
    var topMargin = e.MarginBounds.Top;
    e.Graphics.DrawString(textToPrint, printFont, Brushes.Black, leftMargin, topMargin);
}

I had also tried a snippet from MSDN here but it said it did not recognize the printer name.

public void TestPrint(string msg)
{
    var server = new LocalPrintServer();
    var queue = LocalPrintServer.GetDefaultPrintQueue();

    // Call AddJob
    var job = queue.AddJob();

    // Write a Byte buffer to the JobStream and close the stream
    var stream = job.JobStream;
    var buffer = UnicodeEncoding.Unicode.GetBytes(msg);
    stream.Write(buffer, 0, buffer.Length);
    stream.Close();
}

回答1:

Print "hello world" server-side in .NET

1. Share the printer
2. Create a PrintDocument object
3. Reference the printer by name
4. Add a method to provide content
5. Print

Code

using System.Drawing;
using System.Drawing.Printing;

public void Print()
{
  var doc = new PrintDocument();
  doc.PrinterSettings.PrinterName = "\\\\deployment-machine-name\\share-name";
  doc.PrintPage += new PrintPageEventHandler(ProvideContent);
  doc.Print();
}
public void ProvideContent(object sender, PrintPageEventArgs e)
{
  e.Graphics.DrawString(
    "Hello world",
    new Font("Arial", 12),
    Brushes.Black,
    e.MarginBounds.Left,
    e.MarginBounds.Top);
}

回答2:

First of all give an option to select a printer. Your whole requirement is already illustrated on Microsoft Support Site.

Have a look here.

A sample from there(In case someday the page is dead):-

private void print_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);
    }
}