Set time programmatically using C#

Question

What is the best way to set the time on a remote machine remotely? The machine is running Windows XP and is receiving the new time through a web service call. The goal is

Answer 1

This is the Win32 API call for setting system time:

[StructLayout(LayoutKind.Sequential)] 
public struct SYSTEMTIME { 
 public short wYear; 
 public short wMonth; 
 public short wDayOfWeek; 
 public short wDay; 
 public short wHour; 
 public short wMinute; 
 public short wSecond; 
 public short wMilliseconds; 
 } 
 [DllImport("kernel32.dll", SetLastError=true)] 
public static extern bool SetSystemTime(ref SYSTEMTIME theDateTime ); 

I'm not exactly sure how you would get the security worked out such that you could execute that function on the client, though.

You can get a lot more detail on setting system time at PInvoke.