namespace LanIpAddresses
{
	class NetApi
	{
		[DllImport ( "Netapi32.dll", EntryPoint = "NetServerEnum" )]
		public static extern Int32 NetServerEnum (
			[MarshalAs (UnmanagedType.LPWStr)] String serverName,
			Int32 level,
			out IntPtr bufferPtr,
			UInt32 prefMaxLen,
			ref Int32 entriesRead,
			ref Int32 totalEntries,
			UInt32 serverType,
			[MarshalAs (UnmanagedType.LPWStr)] String domain,
			IntPtr handle );
 
		[DllImport ( "Netapi32.dll", EntryPoint = "NetApiBufferFree" )]
		public static extern UInt32 NetApiBufferFree ( IntPtr buffer );
	}
 
 
	class EnumerateLanMachines
	{
		public const UInt32 SUCCESS = 0;
		public const UInt32 FAIL = 234;
		public const UInt32 MAX_PREFERRED_LENGTH = 0xFFFFFFFF;
		//public ArrayList machines = new ArrayList ( );
 
		enum ServerTypes : uint
		{
			WorkStation = 0x00000001,
			Server = 0x00000002
		}
 
		[StructLayout ( LayoutKind.Sequential, CharSet = CharSet.Auto )]
		public struct MachineInfo
		{
			[MarshalAs ( UnmanagedType.U4 )]
			public UInt32 platformId;
 
			[MarshalAs ( UnmanagedType.LPWStr )]
			public String serverName;
		}
 
		public enum Platform
		{ 
            PLATFORM_ID_DOS = 300,
            PLATFORM_ID_OS2 = 400,
            PLATFORM_ID_NT = 500,
            PLATFORM_ID_OSF = 600,
            PLATFORM_ID_VMS = 700
		}
 
		public void enumerateMachines ( )
		{ 
			IntPtr buffer = new IntPtr();
			int totalEntries = 0;
			int entriesRead = 0;
			int result;
 
			result = NetApi.NetServerEnum ( null, 100, out buffer, MAX_PREFERRED_LENGTH, ref entriesRead, ref totalEntries, (uint) ServerTypes.WorkStation, null, IntPtr.Zero );
 
			MachineInfo machineInfo;
 
			if (result != FAIL)
			{
				Console.WriteLine ( "Succeeded!" );
				Console.WriteLine ( entriesRead );
				for (int i = 0; i < entriesRead; ++i)
				{
					machineInfo = (MachineInfo) Marshal.PtrToStructure ( buffer, typeof ( MachineInfo ) );
 
					//machines.Add ( machineInfo );
					Console.WriteLine ( machineInfo.serverName );
 
					buffer = (IntPtr) ( (ulong) buffer + (ulong) Marshal.SizeOf ( machineInfo ) );
				}
 
				NetApi.NetApiBufferFree ( buffer );
			}
		}
	}
}

namespace LanIpAddresses
{
	class Program
	{
		private static IPHostEntry ipHost;
		static ArrayList ipList;
 
		static void Main ( string[ ] args )
		{
			EnumerateLanMachines enumerate = new EnumerateLanMachines ( );
 
			enumerate.enumerateMachines ( );
 
			/*foreach (EnumerateLanMachines.MachineInfo o in enumerate.machines)
			{
				Console.WriteLine ( o.platformId + " " + o.serverName );
			}*/
 
			Console.ReadLine ( );
		}
	}
}