How can I convert from a SID to an account name in C#

Question

I have a C# application that scans a directory and gathers some information. I would like to display the account name for each file. I can do this on the local system by g

Answer 1

I am quite sure you will be able to use the accepted answer from here: Determine the LocalSystem account name using C#

Basically, you can translate an instance of the SecurityIdentifier class to type NTAccount, from which you can get the user name. In code:

using System.Security.Principal;

SecurityIdentifier sid = new SecurityIdentifier("S-1-5-18");
NTAccount acct = (NTAccount)sid.Translate(typeof(NTAccount));
Console.WriteLine(acct.Value);