C# Running many async tasks the same time

Question

I\'m kinda new to async tasks.

I\'ve a function that takes student ID and scrapes data from specific university website with the required ID.

    private         


        

Answer 1

This is what I ended up with based on @erdomke code:

    public static async Task ForEachParallel(
      this IEnumerable list, 
      Func action, 
      int dop)
    {
        var tasks = new List(dop);
        foreach (var item in list)
        {
            tasks.Add(action(item));

            while (tasks.Count >= dop)
            {
                var completed = await Task.WhenAny(tasks).ConfigureAwait(false);
                tasks.Remove(completed);
            }
        }

        // Wait for all remaining tasks.
        await Task.WhenAll(tasks).ConfigureAwait(false);
    }

    // usage
    await Enumerable
        .Range(1, 500)
        .ForEachParallel(i => ProcessItem(i), Environment.ProcessorCount);