Async call with await in HttpClient never returns

Question

I have a call I am making from inside a xaml-based, C# metro application on the Win8 CP; this call simply hits a web service and returns JSON data.

Answer 1

Disclaimer: I don't like the ConfigureAwait() solution because I find it non-intuitive and hard to remember. Instead I came to the conclusion to wrap non awaited method calls in Task.Run(() => myAsyncMethodNotUsingAwait()). This seems to work 100% but might just be a race condition!? I'm not so sure what is going on to be honest. This conclusion might be wrong and I risk my StackOverflow points here to hopefully learn from the comments :-P. Please do read them!

I just had the problem as described and found more info here.

The statement is: "you can't call an asynchronous method"

await asyncmethod2()

from a method that blocks

myAsyncMethod().Result

In my case I couldn't change the calling method and it wasn't async. But I didn't actually care about the result. As I remember it also didn't work removing the .Result and have the await missing.

So I did this:

public void Configure()
{
    var data = "my data";
    Task.Run(() => NotifyApi(data));
}

private async Task NotifyApi(bool data)
{
    var toSend = new StringContent(JsonConvert.SerializeObject(data), Encoding.UTF8, "application/json");
    await client.PostAsync("http://...", data);
}

In my case I didn't care about the result in the calling non-async method but I guess that is quite common in this use case. You can use the result in the calling async method.