public sealed class SearchPeopleResultsViewModel : ViewModelBase
{
    private LinqAsyncDataSourceProvider _provider;
    private PeopleContext _context;

    public SearchPeopleResultsViewModel()
    {
        _context = new PeopleContext();
        _context.Configuration.ProxyCreationEnabled = false;
        _context.Configuration.AutoDetectChangesEnabled = false;
        _context.Configuration.LazyLoadingEnabled = false;

        IQueryable<Person> people = _context.People.AsNoTracking();
        _provider = new LinqAsyncDataSourceProvider(people);
    }

    public DataSourceProvider SearchResults
    {
        get { return _provider; }
    }

    protected override void Dispose(bool disposing)
    {
        try
        {
            if (disposing)
            {
                if (null != _provider)
                {
                    _provider.Dispose();
                    _provider = null;
                }

                if (null != _context)
                {
                    _context.Dispose();
                    _context = null;
                }
            }
        }
        finally 
        {
            base.Dispose(disposing);
        }
    }
}