using System.Management; 

public class Win32OperatingSystem 
{ 
public static void Shutdown(string machineName, string username, string password) 
{ 
ManagementScope Scope = null; 
ConnectionOptions ConnOptions = null; 
ObjectQuery ObjQuery = null; 
ManagementObjectSearcher ObjSearcher = null; 
try 
{ 
ConnOptions = new ConnectionOptions(); 
ConnOptions.Impersonation = ImpersonationLevel.Impersonate; 
ConnOptions.EnablePrivileges = true; 
//local machine 
if (machineName.ToUpper() == Environment.MachineName.ToUpper() ) 
Scope = new ManagementScope(@”\ROOT\CIMV2″, ConnOptions); 

else 
{ 
//remote machine 
ConnOptions.Username = username; 
ConnOptions.Password = password; 
Scope = new ManagementScope(@”\\” + machineName + @”\ROOT\CIMV2″, ConnOptions); 
} 
Scope.Connect(); 
ObjQuery = new ObjectQuery(“SELECT * FROM Win32_OperatingSystem”); 
ObjSearcher = new ManagementObjectSearcher(Scope, ObjQuery ); 
foreach( ManagementObject operatingSystem in ObjSearcher.Get()) 
{ 
MessageBox.Show(“Caption = ” + operatingSystem.GetPropertyValue(“Caption”)); 
MessageBox.Show(“Version = ” + operatingSystem.GetPropertyValue(“Version”)); 
ManagementBaseObject outParams = operatingSystem.InvokeMethod (“Shutdown”,null,null); 

} 
} 
catch (Exception ex) 
{ 
throw ex; 
} 
} 
} 

//Note: 
Call the function like: 
[STAThread] 
static void Main(string[] args) 
{ 
Win32OperatingSystem.Shutdown(@”Machinename”, @”UserName”, @”Pwd”); 
}