WMI State Service (Проверка состояния службы с помощью WMI)

public int state()
{        
    ConnectionOptions co = new ConnectionOptions();
    co.Username = textEdit1.Text;
    co.Password = textEdit2.Text;
    co.EnablePrivileges = true;
    co.Impersonation = ImpersonationLevel.Impersonate;


    ManagementScope scope = new ManagementScope(string.Format(@"\\{0}\root\CIMV2", textEdit3.Text));
    scope.Options = co;
    scope.Connect();

    ObjectQuery query = new ObjectQuery(string.Format("select * from Win32_Service where name = 'r_server'"));
    searcher = new ManagementObjectSearcher(scope, query);

    queryCollection = searcher.Get();

    foreach (ManagementObject m in queryCollection)
    {
        if (m.GetPropertyValue("State").ToString() == "Running")
        {
            retState = 1;
        }
        else
        {
            retState = 0;
        }
    }
    return retState;    
}