Question

我正在編寫代碼以在指定的時間後終止特定進程。試圖做終止時使用的SELECT Name, CreationDate一個WQL語句拋出一個異常 -

ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT Name, CreationDate FROM Win32_Process WHERE Name = 'foo'"); 

foreach (ManagementObject process in searcher.Get()) 
{ 
    process.InvokeMethod("Terminate", null); 
} 

問題：

"Operation is not valid due to the current state of the object." 

...我用下面的代碼（簡化後）但是，使用SELECT *工程並終止該過程。爲什麼會這樣 - 結果集中是否需要特定的WMI列？

謝謝！

Answer 1

當您執行WMI方法時，WMI內部搜索WMI Object path以標識將在該方法上執行的實例。

在這種情況下爲Win32_Process WMI類的WMI對象路徑看起來像Win32_Process.Handle="8112"，所以當你看到Handle屬性是WMI對象路徑的一部分，必須包含在您的WQL sentece，

檢查該樣本。

using System; 
using System.Collections.Generic; 
using System.Management; 
using System.Text; 
//this will all the notepad running instances 

namespace GetWMI_Info 
{ 
    class Program 
    { 

     static void Main(string[] args) 
     { 
      try 
      { 
       string ComputerName = "localhost"; 
       ManagementScope Scope;     

       if (!ComputerName.Equals("localhost", StringComparison.OrdinalIgnoreCase)) 
       { 
        ConnectionOptions Conn = new ConnectionOptions(); 
        Conn.Username = ""; 
        Conn.Password = ""; 
        Conn.Authority = "ntlmdomain:DOMAIN"; 
        Scope = new ManagementScope(String.Format("\\\\{0}\\root\\CIMV2", ComputerName), Conn); 
       } 
       else 
        Scope = new ManagementScope(String.Format("\\\\{0}\\root\\CIMV2", ComputerName), null); 

       Scope.Connect(); 
       ObjectQuery Query = new ObjectQuery("SELECT Handle FROM Win32_Process Where Name='notepad.exe'"); 
       ManagementObjectSearcher Searcher = new ManagementObjectSearcher(Scope, Query); 

       foreach (ManagementObject WmiObject in Searcher.Get()) 
       { 
        WmiObject.InvokeMethod("Terminate", null); 

       } 
      } 
      catch (Exception e) 
      { 
       Console.WriteLine(String.Format("Exception {0} Trace {1}",e.Message,e.StackTrace)); 
      } 
      Console.WriteLine("Press Enter to exit"); 
      Console.Read(); 
     } 
    } 
}