I use this code to get the groups of the current user. But I want to manually give the user and then get his groups. How can I do this?
using System.Security.Principal;
public ArrayList Groups()
{
ArrayList groups = new ArrayList();
foreach (IdentityReference group in System.Web.HttpContext.Current.Request.LogonUserIdentity.Groups)
{
groups.Add(group.Translate(typeof(NTAccount)).ToString());
}
return groups;
}
If you're on .NET 3.5 or up, you can use the new System.DirectoryServices.AccountManagement
(S.DS.AM) namespace which makes this a lot easier than it used to be.
Read all about it here: Managing Directory Security Principals in the .NET Framework 3.5
Update: older MSDN magazine articles aren't online anymore, unfortunately - you'll need to download the CHM for the January 2008 MSDN magazine from Microsoft and read the article in there.
Basically, you need to have a "principal context" (typically your domain), a user principal, and then you get its groups very easily:
public List<GroupPrincipal> GetGroups(string userName)
{
List<GroupPrincipal> result = new List<GroupPrincipal>();
// establish domain context
PrincipalContext yourDomain = new PrincipalContext(ContextType.Domain);
// find your user
UserPrincipal user = UserPrincipal.FindByIdentity(yourDomain, userName);
// if found - grab its groups
if(user != null)
{
PrincipalSearchResult<Principal> groups = user.GetAuthorizationGroups();
// iterate over all groups
foreach(Principal p in groups)
{
// make sure to add only group principals
if(p is GroupPrincipal)
{
result.Add((GroupPrincipal)p);
}
}
}
return result;
}
and that's all there is! You now have a result (a list) of authorization groups that user belongs to - iterate over them, print out their names or whatever you need to do.
Update: In order to access certain properties, which are not surfaced on the UserPrincipal
object, you need to dig into the underlying DirectoryEntry
:
public string GetDepartment(Principal principal)
{
string result = string.Empty;
DirectoryEntry de = (principal.GetUnderlyingObject() as DirectoryEntry);
if (de != null)
{
if (de.Properties.Contains("department"))
{
result = de.Properties["department"][0].ToString();
}
}
return result;
}
Update #2: seems shouldn't be too hard to put these two snippets of code together.... but ok - here it goes:
public string GetDepartment(string username)
{
string result = string.Empty;
// if you do repeated domain access, you might want to do this *once* outside this method,
// and pass it in as a second parameter!
PrincipalContext yourDomain = new PrincipalContext(ContextType.Domain);
// find the user
UserPrincipal user = UserPrincipal.FindByIdentity(yourDomain, username);
// if user is found
if(user != null)
{
// get DirectoryEntry underlying it
DirectoryEntry de = (user.GetUnderlyingObject() as DirectoryEntry);
if (de != null)
{
if (de.Properties.Contains("department"))
{
result = de.Properties["department"][0].ToString();
}
}
}
return result;
}