All 20 Asynchronous Programming questions
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C# › Asynchronous Programming

Why can .Result or .Wait() deadlock, and what's the fix?

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Answer

In a single-threaded context the blocked thread waits for a continuation that needs that same thread — neither proceeds. Fix by awaiting all the way down.
// risky: var d = LoadAsync().Result;
var d = await LoadAsync();
Real-world example A legacy MVC action blocking on an async call hangs under load until made async end-to-end.
All 20 Asynchronous Programming questions