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1.C#5.0 中引入了async和await。这两个关键字可以让我们更加轻松的完成异步代码的编写。
async
await
2.方法(包括Lambada表达式和匿名方法)可以用async关键字标记,允许该方法以非阻塞的形式进行
Lambada
工作。
运行。
4.单个async可以拥有多个await上下文
5.当遇到await表达式时,调用线程将挂起,直到await的任务完成。同时,控制将返回返回给方法的
调用者。
Task
的返回void。
void
Async
static void Main(string[] args) { string txt = DoWorkAsync().Result; Console.WriteLine("main threadId=" + Thread.CurrentThread.ManagedThreadId); Console.Read(); } public static async Task<string> DoWorkAsync() { return await Task.Run(()=> { Console.WriteLine("child threadId=" + Thread.CurrentThread.ManagedThreadId); Thread.Sleep(1000); return "Done with work!"; }); }
The text was updated successfully, but these errors were encountered:
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async/await
1.C#5.0 中引入了
async
和await
。这两个关键字可以让我们更加轻松的完成异步代码的编写。2.方法(包括
Lambada
表达式和匿名方法)可以用async
关键字标记,允许该方法以非阻塞的形式进行工作。
async
关键字的方法(包括Lambada
表达式和匿名方法)在遇到await
关键字之前将以阻塞的形式运行。
4.单个
async
可以拥有多个await
上下文5.当遇到
await
表达式时,调用线程将挂起,直到await
的任务完成。同时,控制将返回返回给方法的调用者。
await
关键字将从视图中隐藏返回的Task
对象,直接返回实际的返回值。没有返回值的方法可以简单的返回
void
。Async
作为后缀。The text was updated successfully, but these errors were encountered: