Async method never returns [duplicate]

Question

Possible Duplicate:
WinRT: Loading static data with GetFileFromApplicationUriAsync()

The following code in my application is called, but it never returns, or throws an exception:

public async Task Load()
{
    ...
    StorageFile file = 
      await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///" + name));
    ...
}

This is how I call the method:

x.Load().Wait();

Why does the awaited method GetFileFromApplicationUriAsync() never return?

Answer 1

When you (synchronously) block on asynchronous code, you run into a deadlock problem.

Follow these best practices:

1. Use ConfigureAwait(false) whenever possible in your library methods (e.g., Load).
2. Use async all the way down; don't block on async code.

In your case, it sounds like Load may be called as part of startup. This is a bit tricky to do asynchronously (since constructors may not be async). However, you should be able to get it to work by utilizing asynchronous lazy initialization.