如何通过使用C#窗口服务通过打印机打印数据打印文本文件

问题描述:

如何通过打印机自动打印基于给定文件名的文本文件,而无需在C sharp窗口服务中执行任何手动手动工作,它不是为我工作,任何人给我建议。如何通过使用C#窗口服务通过打印机打印数据打印文本文件

using System.Management; 

    private Font printFont; 
    private StreamReader streamToPrint; 

private void GetPrinters(string fileName) 
    { 

ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_Printer"); 

     string printerName = ""; 
     foreach (ManagementObject printer in searcher.Get()) 
     { 
     printerName = printer["Name"].ToString().ToLower(); 
     if (printerName.Equals(@"\\chenraqdc1.raqmiyat.local\hp laserjet black chennai")) 
      { 
       Console.WriteLine("Printer = " + printer["Name"]); 
       if (printer["WorkOffline"].ToString().ToLower().Equals("true")) 
        { 
         // printer is offline by user 
         label1.Text = "Your Plug-N-Play printer is not connected."; 
        } 
       else 
        {streamToPrint = new StreamReader(fileName); 

        printFont = new Font("Arial", 10); 
        PrintDocument pd = new PrintDocument(); 
        pd.PrintPage += new PrintPageEventHandler 
         (this.pd_PrintPage); 
        pd.Print(); 

        streamToPrint.Close(); 
        } 
      } 
     } 
    } 
      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); 

     // Print each line of the file. 
     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++; 
     } 
+0

我是否需要设置任何打印机设置,y它没有得到打印 – pravz

+0

代码是不会抛出任何错误,pd.Print();系统来到这条线它显示一个小的对话框打印文件,但文件没有得到打印,任何方式善意地帮助如何禁用该打印对话框 – pravz

你可以做这样的事情......

注:这是示例代码如何使用C#窗口服务打印PDF文件,如果你要打印的文本文件,你可以更改此代码

带有按钮(cmdGetPrinters)和ListView的Windows窗体 (lstPrinters)。列表视图有两列定义 - “属性”和 “值”,它将描述安装在本地 机器上的打印机。下面的代码实现了魔术。

using System;                
using System.Collections.Generic;           
using System.ComponentModel;             
using System.Data; System.Drawing;           
using System.Text; System.Windows.Forms;         
using System.Management;             
using System.Management.Instrumentation;          

public partial class frmPrintDisplay : Form         
{                   
public frmPrintDisplay()            
{                  
     InitializeComponent();            
}                  

private void cmdGetPrinters_Click(object sender, EventArgs e)   
{                  
    ObjectQuery query = new ObjectQuery("SELECT * FROM Win32_Printer"); 

    ManagementObjectSearcher mo = new ManagementObjectSearcher(query); 

    ManagementObjectCollection printers = mo.Get();      

    foreach (ManagementObject printer in printers)      
    {                 
     PropertyDataCollection printerProperties = printer.Properties; 
     string printerPath = printer.Path.ToString() ;     
     PropertyDataCollection.PropertyDataEnumerator test =    
      printer.Properties.GetEnumerator();       

     while(! (test.MoveNext()== false))        
     {                
      lstPrinters.Items.Add(          
       new ListViewItem(new string[]       
       {              
        test.Current.Name,         
        (             
         (test.Current.Value == null) ?     
         "n/a" : test.Current.Value.ToString()   
        )             
       })              
      );               
     }                
     }                 
    }                  
    } 

此图显示了这个小窗口应用程序的结果。请注意“名称”属性,这将用于将文本文件发送到打印机。这显示在打印机的“ShareName”属性下。在同一个域/工作组中的测试机器上,您必须安装新的网络打印机,并指出安装情况以查看第一台计算机上的共享打印机。这实际上使得第一台计算机成为了打印机服务器,并且您可以为客户端重新设置设置。

现在到测试机......应用上述code building保存文本文件到一个临时目录名为C:\ Program Files文件[应用程序名称] \ TEMP \

using System;                
    using System.Collections.Generic;           
    using System.ComponentModel;             
    using System.Data; System.Drawing;           
    using System.IO;               
    using System.Text; System.Windows.Forms;         
    using System.Management;             
    using System.Management.Instrumentation;          



private void print(ref DirectoryInfo tempDir)        
{                   
    try                  
    {                  
    foreach(FileInfo file in tempDir.GetFiles("*.pdf"))     
    {                 
     file.CopyTo("\\\\XYZ\\Phaser77\\" + file.Name);     
    }                 
    }                  
    catch(Exception ee){ }             
}  

我希望这将有助于你