ActiveDirectory – Keith Rull

Below is a code snippet that allows you to determine what groups a Windows user is part of. [C#]

<SPAN style="FONT-SIZE: 11px; COLOR: black; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent"><SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">using</SPAN> System;
<SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">using</SPAN> System.Collections.Generic;
<SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">using</SPAN> System.Linq;
<SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">using</SPAN> System.Security.Principal;
<SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">using</SPAN> System.Text;

<SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">namespace</SPAN> KeithRull.ActiveDirectory.IdentifyingUserGroups
{
    <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">class</SPAN> Program
    {
        <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">static</SPAN> <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">void</SPAN> Main(<SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">string</SPAN>[] args)
        {
            <SPAN style="FONT-SIZE: 11px; COLOR: green; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">//get the WindowsIdentity of the current user</SPAN>
            WindowsIdentity currentWindowsIdentity <SPAN style="FONT-SIZE: 11px; COLOR: red; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">=</SPAN> WindowsIdentity.GetCurrent();
            <SPAN style="FONT-SIZE: 11px; COLOR: green; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">//retrieve the groups that the user belongs to</SPAN>
            IdentityReferenceCollection currentWindowsIdentityGroups <SPAN style="FONT-SIZE: 11px; COLOR: red; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">=</SPAN> currentWindowsIdentity.Groups;
            <SPAN style="FONT-SIZE: 11px; COLOR: green; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">//iterate thru each group</SPAN>
            <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">foreach</SPAN> (IdentityReference identity <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">in</SPAN> currentWindowsIdentityGroups)
            {
                <SPAN style="FONT-SIZE: 11px; COLOR: green; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">//translate the identity into an NTAccount identity</SPAN>
                IdentityReference ntAccountIdentityReference <SPAN style="FONT-SIZE: 11px; COLOR: red; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">=</SPAN> identity.Translate(<SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">typeof</SPAN>(NTAccount));
                <SPAN style="FONT-SIZE: 11px; COLOR: green; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">//get the value</SPAN>
                <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">string</SPAN> groupName <SPAN style="FONT-SIZE: 11px; COLOR: red; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">=</SPAN> ntAccountIdentityReference.ToString();
                <SPAN style="FONT-SIZE: 11px; COLOR: green; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">//print to console</SPAN>
                Console.WriteLine(groupName);
            }
            <SPAN style="FONT-SIZE: 11px; COLOR: green; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">//pause</SPAN>
            Console.ReadLine();
        }
    }
}</SPAN>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Security.Principal;

using System.Text;

namespace KeithRull.ActiveDirectory.IdentifyingUserGroups

{

class Program

{

static void Main(string[] args)

{

//get the WindowsIdentity of the current user

WindowsIdentity currentWindowsIdentity = WindowsIdentity.GetCurrent();

//retrieve the groups that the user belongs to

IdentityReferenceCollection currentWindowsIdentityGroups = currentWindowsIdentity.Groups;

//iterate thru each group

foreach (IdentityReference identity in currentWindowsIdentityGroups)

{

//translate the identity into an NTAccount identity

IdentityReference ntAccountIdentityReference = identity.Translate(typeof(NTAccount));

//get the value

string groupName = ntAccountIdentityReference.ToString();

//print to console

Console.WriteLine(groupName);

}

//pause

Console.ReadLine();

}

}

[VB.NET]

<SPAN style="FONT-SIZE: 11px; COLOR: black; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent"><SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Imports</SPAN> System 
<SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Imports</SPAN> System.Collections.Generic 
<SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Imports</SPAN> System.Linq 
<SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Imports</SPAN> System.Security.Principal 
<SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Imports</SPAN> System.Text 

<SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Namespace</SPAN> KeithRull.ActiveDirectory.IdentifyingUserGroups 
    <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Class</SPAN> Program 
        <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Private</SPAN> <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Shared</SPAN> <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Sub</SPAN> Main(<SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">ByVal</SPAN> args <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">As</SPAN> <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">String</SPAN>()) 
            <SPAN style="FONT-SIZE: 11px; COLOR: green; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">'get the WindowsIdentity of the current user </SPAN>
            <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Dim</SPAN> currentWindowsIdentity <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">As</SPAN> WindowsIdentity <SPAN style="FONT-SIZE: 11px; COLOR: red; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">=</SPAN> WindowsIdentity.GetCurrent() 
            <SPAN style="FONT-SIZE: 11px; COLOR: green; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">'retrieve the groups that the user belongs to </SPAN>
            <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Dim</SPAN> currentWindowsIdentityGroups <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">As</SPAN> IdentityReferenceCollection <SPAN style="FONT-SIZE: 11px; COLOR: red; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">=</SPAN> currentWindowsIdentity.Groups 
            <SPAN style="FONT-SIZE: 11px; COLOR: green; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">'iterate thru each group </SPAN>
            <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">For</SPAN> <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Each</SPAN> identity <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">As</SPAN> IdentityReference <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">In</SPAN> currentWindowsIdentityGroups 
                <SPAN style="FONT-SIZE: 11px; COLOR: green; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">'translate the identity into an NTAccount identity </SPAN>
                <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Dim</SPAN> ntAccountIdentityReference <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">As</SPAN> IdentityReference <SPAN style="FONT-SIZE: 11px; COLOR: red; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">=</SPAN> identity.Translate(<SPAN style="FONT-SIZE: 11px; COLOR: red; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">GetType</SPAN>(NTAccount)) 
                <SPAN style="FONT-SIZE: 11px; COLOR: green; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">'get the value </SPAN>
                <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Dim</SPAN> groupName <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">As</SPAN> <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">String</SPAN> <SPAN style="FONT-SIZE: 11px; COLOR: red; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">=</SPAN> ntAccountIdentityReference.ToString() 
                <SPAN style="FONT-SIZE: 11px; COLOR: green; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">'print to console </SPAN>
                Console.WriteLine(groupName) 
            <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Next</SPAN> 
            <SPAN style="FONT-SIZE: 11px; COLOR: green; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">'pause </SPAN>
            Console.ReadLine() 
        <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">End</SPAN> <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Sub</SPAN> 
    <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">End</SPAN> <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Class</SPAN> 
<SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">End</SPAN> <SPAN style="FONT-SIZE: 11px; COLOR: blue; FONT-FAMILY: Courier New; BACKGROUND-COLOR: transparent">Namespace</SPAN> </SPAN>

Imports System.Collections.Generic

Imports System.Linq

Imports System.Security.Principal

Imports System.Text

Namespace KeithRull.ActiveDirectory.IdentifyingUserGroups

Class Program

Private Shared Sub Main(ByVal args As String())

'get the WindowsIdentity of the current user

Dim currentWindowsIdentity As WindowsIdentity = WindowsIdentity.GetCurrent()

'retrieve the groups that the user belongs to

Dim currentWindowsIdentityGroups As IdentityReferenceCollection = currentWindowsIdentity.Groups

'iterate thru each group

For Each identity As IdentityReference In currentWindowsIdentityGroups

'translate the identity into an NTAccount identity

Dim ntAccountIdentityReference As IdentityReference = identity.Translate(GetType(NTAccount))

'get the value

Dim groupName As String = ntAccountIdentityReference.ToString()

'print to console

Console.WriteLine(groupName)

Next

'pause

Console.ReadLine()

End Sub

HTH

Category: ActiveDirectory

How To: Detemine The Groups For A Windows User

September 17, 2008

keithrull

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