Task status always waiting for activation

Question

I'm using this async code for my project:

public async Task<IEnumerable<Area>> GetAreas()
{

        var webclient = new WebClient();
        var result = await webclient.DownloadStringTaskAsync(new Uri(uri)).ConfigureAwait(false);

        return JsonConvert.DeserializeObject<IEnumerable<Area>>(result);
}


public async Task<ActionResult> Index()
    {
        var areas = GetAreas();
        Task.WaitAll(areas);
        return View(model: areas);
    }

I have tried this but when i debug my program areas variable have this properties: status:waiting for activation, method:"", Result : "". I know this happen because deadlock async.

please help me to solve my problem.

I am using .net 4 and visual studio 2010. So i can't find that method. Thank you — Faisal Silitonga, Nov 27 '13 at 03:06
i found [this](http://stackoverflow.com/questions/12515184/is-this-a-correct-net-4-implementation-for-net-4-5s-whenall) but i confuse how implement it in my code. I had tried it and the same problem happen. — Faisal Silitonga, Nov 27 '13 at 05:04

score 0 · Answer 1 · answered Nov 27 '13 at 03:29

0

How about this :

public Task<ActionResult> Index()
{
    var tcs = new TaskCompletionSource<ActionResult>();
    GetAreas().ContinueWith(t => 
    {
      if(t.IsCancelled)
        tcs.SetCancelled();
      else if(t.IsFaulted)
        tcs.SetException(t.Exception);
      else
        tcs.SetResult(new View(model: t.Result); 
    });
    return tcs.Task;
}

answered Nov 27 '13 at 03:29

atomaras

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I had tried it. And i have the same problem. When i debug my code. tcs.Task.Status still "WaitingforActivation". Thanks – Faisal Silitonga Nov 27 '13 at 04:32

Task status always waiting for activation

1 Answers1