System.DirectoryServices.AccountManagement namespace

The AccountManagement namespace is part of the .Net 3.5 framework, and provides an easy way to access and modify directory services.

I used to have my own ADHelper library that encapsulated the methods in System.DirectoryServices namespace.

Recently, i had to find out if a user was member of a specified group. This was possible, but it took a lot of lines of code. With the AccountManagement namespace it can be done in a few lines:

    static void Main()

    {

       UserPrincipal user = UserPrincipal.Current;

       if (user == null && !IsMemberOf(user, Settings.Default.EditorRole))

       {

         // user is found

       }

    }

    static bool IsMemberOf(UserPrincipal user, string roleName)

    {

        bool result = false;

        if (user != null)

        {

            PrincipalSearchResult groups = user.GetGroups();

            if (groups != null)

            {

                foreach (Principal principal in groups)

                {

                    if (principal.Name.Equals(roleName, StringComparison.CurrentCultureIgnoreCase))

                    {

                        result = true;

                        break;

                    }

                }

            }

        }

        return result;

    }