WMI關閉磁盤

Question

我想關閉磁盤（WMI）。到目前爲止，我有以下代碼：

ManagementScope scope = new ManagementScope("\\\\.\\ROOT\\cimv2"); 
    ObjectQuery query = new ObjectQuery("SELECT * FROM CIM_DiskDrive"); 

    //create object searcher 
    ManagementObjectSearcher searcher = 
          new ManagementObjectSearcher(scope, query); 
    ManagementObjectCollection queryCollection = searcher.Get(); 

    //enumerate the collection. 
    foreach (ManagementObject m in queryCollection) 
    { 
     Console.WriteLine("in set power state for: " + m.Path); 
     ManagementOperationObserver obs = new ManagementOperationObserver(); 
     obs.Progress += new ProgressEventHandler(obs_Progress); 
     obs.Completed += new CompletedEventHandler(obs_Completed); 
     m.InvokeMethod(obs, "SetPowerState", new object[]{"7"}); 
    } 

但是，磁盤活動不斷髮生。任何關於正在進行的想法將不勝感激。

Answer 1

的setPowerState不是由WMI實現：

http://msdn.microsoft.com/en-us/library/aa387254(v=VS.85).aspx

檢查CompletedEventArgs.Status也將返回MethodNotImplemented告訴我們，這是事實。如果你想使用這種方法，你必須實現你自己的提供者。