如何在沒有任何用戶界面的情況下從C＃打印文檔

Question

我想從C＃打印文檔，但不想爲其創建任何用戶界面。應該使用C＃靜默打印文檔。

我試過ProcessStartInfo與Verb = "Print"，但顯示的是用於打印文檔的UI。

任何形式的幫助表示讚賞。

Answer 1

也許PrintDocument.Print Method可能幫助:)

請注意，我不認爲這將與.NET的核心工作爲System.Drawing命名空間尚未被完全移植過來。 （Source - GitHub corefx Issue #20325

也將這項工作在UWP的應用程序，因爲它們使用的承印物不同的API。

我沒有跟我一臺打印機，以測試這一點，但這裏是從 msdn代碼示例

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

public class PrintingExample 
{ 
    private Font printFont; 
    private StreamReader streamToPrint; 
    static string filePath; 


    public PrintingExample() 
    { 
     Printing(); 
    } 

    // The PrintPage event is raised for each page to be printed. 
    private void pd_PrintPage(object sender, PrintPageEventArgs ev) 
    { 
     float linesPerPage = 0; 
     float yPos = 0; 
     int count = 0; 
     float leftMargin = ev.MarginBounds.Left; 
     float topMargin = ev.MarginBounds.Top; 
     String line=null; 

     // Calculate the number of lines per page. 
     linesPerPage = ev.MarginBounds.Height/
      printFont.GetHeight(ev.Graphics) ; 

     // Iterate over the file, printing each line. 
     while (count < linesPerPage && 
      ((line=streamToPrint.ReadLine()) != null)) 
     { 
      yPos = topMargin + (count * printFont.GetHeight(ev.Graphics)); 
      ev.Graphics.DrawString (line, printFont, Brushes.Black, 
      leftMargin, yPos, new StringFormat()); 
      count++; 
     } 

     // If more lines exist, print another page. 
     if (line != null) 
      ev.HasMorePages = true; 
     else 
      ev.HasMorePages = false; 
    } 

    // Print the file. 
    public void Printing() 
    { 
     try 
     { 
      streamToPrint = new StreamReader (filePath); 
      try 
      { 
      printFont = new Font("Arial", 10); 
      PrintDocument pd = new PrintDocument(); 
      pd.PrintPage += new PrintPageEventHandler(pd_PrintPage); 
      // Print the document. 
      pd.Print(); 
      } 
      finally 
      { 
      streamToPrint.Close() ; 
      } 
     } 
     catch(Exception ex) 
     { 
      MessageBox.Show(ex.Message); 
     } 
    } 

    // This is the main entry point for the application. 
    public static void Main(string[] args) 
    { 
     string sampleName = Environment.GetCommandLineArgs()[0]; 
     if(args.Length != 1) 
     { 
     Console.WriteLine("Usage: " + sampleName +" <file path>"); 
     return; 
     } 
     filePath = args[0]; 
     new PrintingExample(); 
    } 
}