windows服务开启，禁用

public static class ServiceHelper
{
[DllImport("advapi32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern Boolean ChangeServiceConfig(
IntPtr hService,
UInt32 nServiceType,
UInt32 nStartType,
UInt32 nErrorControl,
String lpBinaryPathName,
String lpLoadOrderGroup,
IntPtr lpdwTagId,
[In] char[] lpDependencies,
String lpServiceStartName,
String lpPassword,
String lpDisplayName);

[DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Auto)]
static extern IntPtr OpenService(
IntPtr hSCManager, string lpServiceName, uint dwDesiredAccess);

[DllImport("advapi32.dll", EntryPoint = "OpenSCManagerW", ExactSpelling = true, CharSet = CharSet.Unicode, SetLastError = true)]
public static extern IntPtr OpenSCManager(
string machineName, string databaseName, uint dwAccess);

[DllImport("advapi32.dll", EntryPoint = "CloseServiceHandle")]
public static extern int CloseServiceHandle(IntPtr hSCObject);

private const uint SERVICE_NO_CHANGE = 0xFFFFFFFF;
private const uint SERVICE_QUERY_CONFIG = 0x00000001;
private const uint SERVICE_CHANGE_CONFIG = 0x00000002;
private const uint SC_MANAGER_ALL_ACCESS = 0x000F003F;

public static void ChangeStartMode(ServiceController svc, ServiceStartMode mode)
{
var scManagerHandle = OpenSCManager(null, null, SC_MANAGER_ALL_ACCESS);
if (scManagerHandle == IntPtr.Zero)
{
throw new ExternalException("Open Service Manager Error");
}

var serviceHandle = OpenService(
scManagerHandle,
svc.ServiceName,
SERVICE_QUERY_CONFIG | SERVICE_CHANGE_CONFIG);

if (serviceHandle == IntPtr.Zero)
{
throw new ExternalException("Open Service Error");
}

var result = ChangeServiceConfig(
serviceHandle,
SERVICE_NO_CHANGE,
(uint)mode,
SERVICE_NO_CHANGE,
null,
null,
IntPtr.Zero,
null,
null,
null,
null);

if (result == false)
{
int nError = Marshal.GetLastWin32Error();
var win32Exception = new Win32Exception(nError);
throw new ExternalException("Could not change service start type: "
+ win32Exception.Message);
}

CloseServiceHandle(serviceHandle);
CloseServiceHandle(scManagerHandle);
}
}

var svc = new ServiceController("Winmgmt");
ServiceHelper.ChangeStartMode(svc, ServiceStartMode.Automatic);
if (svc.Status == ServiceControllerStatus.Paused)
svc.Continue();
else if (svc.Status != ServiceControllerStatus.Running)
svc.Start();
svc.Close();