Friday, 22 January 2016

Get Active Directory User's GUID and SID in C#

We can find an Active Directory User’s GUID and SID in C# by using the UserPrincipal class which exists under the namespace System.DirectoryServices.AccountManagement and it is available only from .NET 3.5.

Step 1 : Create a new Console Application project in Visual Studio.
Step 2 : Add a a.NET reference System.DirectoryServices.AccountManagement
Step 3 : Then use the below C# code to find an AD user's DisplayName, GUID, SID and UserPrincipalName.
using System;
using System.DirectoryServices.AccountManagement;

namespace GetADUserInfo
{
    class Program
    {
        static void Main(string[] args)
        {
            // Set up domain context
            PrincipalContext ctx = new PrincipalContext(ContextType.Domain);
            // Find user
            UserPrincipal user = UserPrincipal.FindByIdentity(ctx, "<Username>");
            if (user != null)
            {
                Console.WriteLine("Name: " + user.DisplayName);
                Console.WriteLine("GUID: " + user.Guid);
                Console.WriteLine(" SID: " + user.Sid);
                Console.WriteLine("UPN: " + user.UserPrincipalName);
            }
        }
    }
}

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