Un DataSource per il Profile

using System;
using System.Web;
using System.Collections.ObjectModel;
using System.Web.UI;
using System.Web.Profile;
using System.Collections;
namespace MyCustomControl
{
    public class ProfileDataSourceControl : DataSourceControl
    {
        protected override DataSourceView GetView(string viewName)
        {
            return new ProfileView(this, viewName);
        }
    }
    public class ProfileView : DataSourceView
    {
        private ProfileBase _profile = null;
        private HttpContext _context = null;
        public ProfileView(IDataSource owner, string viewName): base(owner, viewName)
        {
            _context = HttpContext.Current;
            if (_context == null)
            {
                throw new ApplicationException("Impossibile ricavare il contesto della chiamata");
            }
            _profile = _context.Profile;
        }
        protected override System.Collections.IEnumerable ExecuteSelect(DataSourceSelectArguments arguments)
        {
            return new Collection<profilebase />() { _profile };
        }
        protected override int ExecuteInsert(IDictionary values)
        {
            _profile = ProfileBase.Create(_context.User.Identity.Name, _context.User.Identity.IsAuthenticated);
            foreach (DictionaryEntry item in values)
            {
                _profile[item.Key.ToString()] = item.Value;
            }
            _profile.Save();
            return 0;
        }
        protected override int ExecuteUpdate(IDictionary keys, IDictionary values, IDictionary oldValues)
        {
            foreach (DictionaryEntry item in values)
            {
                _profile[item.Key.ToString()] = values[item.Key.ToString()];
            }
            _profile.Save();
            return 0;
        }
        protected override int ExecuteDelete(IDictionary keys, IDictionary oldValues)
        {
            foreach (DictionaryEntry item in oldValues)
            {
                _profile[item.Key.ToString()] = null;
            }
            _profile.Save();
            return 0;
        }
    }
}