如何在C＃中使用PrintCapabilities類

Question

我試圖攔截打印機作業並更改打印作業的屬性。我可以攔截打印作業並獲取有關它的信息。我跟着這篇文章是

http://www.codeproject.com/Questions/423178/printing-order-intercept-with-csharp

現在我想改變打印作業的紙張尺寸，並且以我發現這篇文章

http://social.msdn.microsoft.com/Forums/en/windowsxps/thread/8af6ba92-5d2c-444b-91f4-a8747739c1b7

但問題是我不能創建class PrintCapabilities。我錯過了什麼？請幫忙。

我當前的代碼如下所示：

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Management; 
using System.Printing; 

namespace PrintJob 
{ 
    class EvenWatch 
    { 
     private ManagementEventWatcher manEWatch; 

     public EvenWatch(string host) 
     { 

      System.Management.ManagementScope oMs = new System.Management 
      .ManagementScope(@"\\" + host + @"\root\cimv2"); 
      oMs.Connect(); 
      manEWatch = new ManagementEventWatcher(oMs, new EventQuery("SELECT * FROM __InstanceCreationEvent WITHIN 0.1 WHERE TargetInstance ISA 'Win32_PrintJob'")); 



      manEWatch.EventArrived += new EventArrivedEventHandler(
      mewPrintJobs_EventArrived); 
      manEWatch.Start(); 
     } 

     static void mewPrintJobs_EventArrived(object sender, EventArrivedEventArgs e) 
     { 
      foreach (PropertyData prop in e.NewEvent.Properties) 
      { 
       string val = prop.Value == null ? "null" : prop.Value.ToString(); 

      } 

      ManagementBaseObject printJob = (ManagementBaseObject)e.NewEvent.Properties["TargetInstance"].Value; 
      string v = ""; 
      foreach (PropertyData propp in printJob.Properties) 
      { 
       string name = propp.Name; 
       string val = propp.Value == null ? "null" : propp.Value.ToString(); 
       val += "\n"; 
       v += name + ":" + val; 

      } 

      PrintQueue printerSpooler = null; 
      printerSpooler = new PrintQueue(new PrintServer(), "EPSON LQ-300+ /II ESC/P 2"); 
      PrintJobSettings printJobSetting = printerSpooler.CurrentJobSettings; 
      string desc = printJobSetting.Description; 



      //printerSpooler.CurrentJobSettings.CurrentPrintTicket 

      Console.WriteLine("-------"); 
      Console.WriteLine(v); 
     } 
    } 
} 

Answer 1

我居然找到了答案。如果你使用的是4.0，你應該也參考ReachFramework.dll，一旦你知道魔法會發生:)