/// <summary>
/// Open an instance of the SCM.
/// </summary>
/// <param name="machine_name">The machine name for the SCM.</param>
/// <param name="database_name">The database name. Specify SERVICES_ACTIVE_DATABASE or SERVICES_FAILED_DATABASE.
/// If null then SERVICES_ACTIVE_DATABASE is used.</param>
/// <param name="desired_access">The desired access for the SCM connection.</param>
/// <param name="throw_on_error">True to throw on error.</param>
/// <returns>The SCM instance.</returns>
public static NtResult <ServiceControlManager> Open(string machine_name, string database_name,
ServiceControlManagerAccessRights desired_access, bool throw_on_error)
{
if (machine_name == string.Empty)
{
machine_name = null;
}
if (database_name == string.Empty)
{
database_name = null;
}
SafeServiceHandle scm = Win32NativeMethods.OpenSCManager(machine_name, database_name, desired_access);
if (!scm.IsInvalid)
{
return(new ServiceControlManager(scm, machine_name, desired_access).CreateResult());
}
return(Win32Utils.CreateResultFromDosError <ServiceControlManager>(throw_on_error));
}