异步调用同步方法 [英] Calling async method synchronously

问题描述

我有一个异步方法：

public async Task<string> GenerateCodeAsync()
{
    string code = await GenerateCodeService.GenerateCodeAsync();
    return code;
}

我需要从一个同步的方法调用此方法。

I need to call this method from a synchronous method.

我怎么能做到这一点，而不必复制生成codeAsync 方法，为了这个同步工作？

How can I do this without having to duplicate the GenerateCodeAsync method in order for this to work synchronously?

推荐答案

您可以访问结果任务，这将导致你的线程阻塞，直至结果的财产可用：

You can access the Result property of the task, which will cause your thread to block until the result is available:

string code = GenerateCodeAsync().Result;

请注意：在某些情况下，这可能会导致死锁：您对结果呼叫块为主线，从而$ ​​P $ pventing的异步$ C的剩余部分$ C来执行。您有以下选项，以确保不会发生这种情况：

Note: In some cases, this might lead to a deadlock: Your call to Result blocks the main thread, thereby preventing the remainder of the async code to execute. You have the following options to make sure that this doesn't happen:

• 添加 .ConfigureAwait（假） 到您的库法的或的



• 中明确线程池中的线程中执行的异步方法并等待它完成：

• Add .ConfigureAwait(false) to your library method or

• explicitly execute your async method in a thread pool thread and wait for it to finish:

string code = Task.Run(GenerateCodeAsync).Result;

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