Async GetMany method in Repository

Question

I have repository method which returns collection according to filter

public IEnumerable<T> GetMany(Expression<Func<T, bool>> filter = null)
{
    IQueryable<T> query = DbSet;

    if (filter != null)
    {
        query = query.Where(filter);
    }

    return query.ToList();
}

Now I want to write this method as Async. And this is my problem. Should I change type of DbSet (DbSet<T> ) to something else or what is the correct solution?

protected readonly DbSet<T> DbSet;

public Repository(AdminDbContext context)
{
    this.Context = context;
    this.DbSet = context.Set<T>();
}

---

UPD : return query.ToListAsync(); - is it enough ? Thanks

Answer 1

As specified in this MSDN article, you still use DbSet, but you use async extensions for accessing the set.

Here's an async version of your code:

public Task<IEnumerable<T>> GetManyAsync(Expression<Func<T, bool>> filter = null)
{
    IQueryable<T> query = DbSet;

    if (filter != null)
    {
        query = query.Where(filter);
    }

    return query.ToListAsync();
}