问题
In .net 4.0, I use Task.ContinueWith regularly. But then I spotted "task.GetAwaiter()" which seems to have the same purpose.
What is the difference?
回答1:
If you're targeting .NET 4, you'd use ContinueWith.
In general, you wouldn't normally use task.GetAwaiter(). This method exists in order to support the await keyword, and is not part of .NET 4 (it's added in 4.5). This isn't something you'd typically use directly yourself, but instead write it as part of an async method.
来源：https://stackoverflow.com/questions/16306474/what-is-the-difference-between-awaiter-getawaiter-and-continuewith