How get list of local network computers?

I found solution using interface IShellItem with CSIDL_NETWORK. I get all network PC.

C++: use method IShellFolder::EnumObjects

C#: you can use Gong Solutions Shell Library

using System.Collections;
using System.Collections.Generic;
using GongSolutions.Shell;
using GongSolutions.Shell.Interop;

    public sealed class ShellNetworkComputers : IEnumerable<string>
    {
        public IEnumerator<string> GetEnumerator()
        {
            ShellItem folder = new ShellItem((Environment.SpecialFolder)CSIDL.NETWORK);
            IEnumerator<ShellItem> e = folder.GetEnumerator(SHCONTF.FOLDERS);

            while (e.MoveNext())
            {
                Debug.Print(e.Current.ParsingName);
                yield return e.Current.ParsingName;
            }
        }

        IEnumerator IEnumerable.GetEnumerator()
        {
            return GetEnumerator();
        }
    }

You will need to use the System.DirectoryServices namespace and try the following:

DirectoryEntry root = new DirectoryEntry("WinNT:");

foreach (DirectoryEntry computers in root.Children)
{
    foreach (DirectoryEntry computer in computers.Children)
    {
        if (computer.Name != "Schema")
        {
             textBox1.Text += computer.Name + "\r\n";
        }
    }
}

It worked for me.