ServiceController MyController = new ServiceController();
MyController.MachineName = server_txt.Text.Trim();
MyController.ServiceName = "Service1";

string msg = MyController.Status.ToString();
Label1.Text = msg;

ConnectionOptions op = new ConnectionOptions();
op.Username = "Domain\Domainuser";
op.Password = "password";
ManagementScope scope = new ManagementScope(@"\Servername.Domainrootcimv2", op);
scope.Connect();
ManagementPath path = new ManagementPath("Win32_Service");
ManagementClass services;
services = new ManagementClass(scope, path, null);

foreach (ManagementObject service in services.GetInstances())
{

if (service.GetPropertyValue("State").ToString().ToLower().Equals("running"))
{ // Do something }

}