Create empty IAsyncEnumerable

Question

I have an interface which is written like this:

public interface IItemRetriever
{
    public IAsyncEnumerable

        

Answer 1

If you install the System.Linq.Async package, you should be able to use AsyncEnumable.Empty(). Here's a complete example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

class Program
{
    static async Task Main()
    {
        IAsyncEnumerable empty = AsyncEnumerable.Empty();
        var count = await empty.CountAsync();
        Console.WriteLine(count); // Prints 0
    }
}