Question

我正在尝试编写一个程序，它将连接到远程服务器并显示某个服务的状态。该服务也由我们（我的公司）编写。

为此我写了一个控制台应用程序，代码是

static void Main(string[] args)
    {
        ConnectionOptions options = new ConnectionOptions();
        options.Password = "mypassword";
        options.Username = "Administrator";
        options.Impersonation =
            System.Management.ImpersonationLevel.Impersonate;

        ManagementScope scope =
            new ManagementScope(
            "\\\\ip_of_the_server\\root\\cimv2", options);
        scope.Connect();

        ServiceController svc = new ServiceController("My_Service_Name", "ip_of_the_server");

        var status = svc.Status.ToString();
        Console.WriteLine(svc.DisplayName + " : " status);

    }

但我不能让它发挥作用。我得到的错误是：

Cannot open Service Control Manager on computer 'ip_of_the_server'. This operation might require other privileges.

内部异常：＆＃34;访问被拒绝＆＃34;。

堆栈跟踪：

   at System.ServiceProcess.ServiceController.GetDataBaseHandleWithAccess(String     machineName, Int32 serviceControlManaqerAccess)
   at System.ServiceProcess.ServiceController.GetDataBaseHandleWithConnectAccess()
   at System.ServiceProcess.ServiceController.GenerateNames()
   at System.ServiceProcess.ServiceController.get_ServiceName()
   at System.ServiceProcess.ServiceController.GenerateStatus()
   at System.ServiceProcess.ServiceController.get_Status()
   at ServiceConsole.Program.Main(String[] args) in c:\Users\Kandroid\Documents\Visual Studio     2013\Projects\ServiceConsole\ServiceConsole\Program.cs:line 33
   at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
   at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity,   String[] args)
   at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart()

任何想法如何解决？

Answer 1

正如您已经设置了管理范围，只需使用WQL查询WMI提供程序以获取正确的WMI对象，在本例中为WIN32_Service，如下所示：

var svc = new ManagementObjectSearcher(
    scope,
    new ObjectQuery("Select Status,State from Win32_Service  where Name='My_Service_Name'"))
        .Get()
        .GetEnumerator();

    if (svc.MoveNext())
    {
          var status = svc.Current["Status"].ToString();
          var state = svc.Current["State"].ToString();
          Console.WriteLine("service status {0}", status);
          // if not running, StartService
          if (!String.Equals(state, "running",StringComparison.InvariantCultureIgnoreCase) {
               ( (ManagementObject) svc.Current ).InvokeMethod("StartService", new object[] {});
          }
    }
    else 
    {
           Console.WriteLine("service not found");
    }

ManagementObjectSearcher负责检索WMI托管对象的集合。 ObjectQuery将从作用域返回类的实例。我们可以执行基本的sql select语句来选择和投影结果集。

迭代器返回一个ManagementObjectBase，它具有Item访问器，可以从返回的实例中检索属性。

无法在计算机上打开服务控制管理器

1 个答案: