WMI关闭磁盘

Question

我想关闭磁盘（WMI）。到目前为止，我有以下代码：

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，磁盘活动不断发生。任何关于正在进行的想法将不胜感激。

Answer 1

的setPowerState不是由WMI实现：

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

检查CompletedEventArgs.Status也将返回MethodNotImplemented告诉我们，这是事实。如果你想使用这种方法，你必须实现你自己的提供者。