Since you’re on .NET 3.5 and up, you should check out the System.DirectoryServices.AccountManagement
(S.DS.AM) namespace. Read all about it here:
- Managing Directory Security Principals in the .NET Framework 3.5
- MSDN docs on System.DirectoryServices.AccountManagement
Basically, you can define a domain context and easily find users and/or groups in AD:
// set up domain context
PrincipalContext ctx = new PrincipalContext(ContextType.Domain, "DOMAINNAME");
// find a user
UserPrincipal user = UserPrincipal.FindByIdentity(ctx, "SomeUserName");
// find the group in question
GroupPrincipal group = GroupPrincipal.FindByIdentity(ctx, "YourGroupNameHere");
if(user != null)
{
// check if user is member of that group
if (user.IsMemberOf(group))
{
// do something.....
}
}
The new S.DS.AM makes it really easy to play around with users and groups in AD!