小编Dan*_*reh的帖子

我有一个项目列表，对于每个项目，我需要执行几个异步 API 请求并处理响应，我已经看到了几个实现，它们在执行时间方面都很相似，但我想知道它们之间的区别。

方法一

Parallel.ForEach(items, new ParallelOptions { MaxDegreeOfParallelism = 10 }, item =>
        {
            var response = item.propertyOne.GetAsync().GetAwaiter().GetResult();
            //process it
            var response = item.propertyTwo.GetAsync().GetAwaiter().GetResult();
            //process it
            var response = item.propertyThree.GetAsync().GetAwaiter().GetResult();
            //process it
        });

方法2

Parallel.ForEach(items, new ParallelOptions { MaxDegreeOfParallelism = 10 }, item =>
        {
            Task.Run(async () =>
            {
                var response = await item.propertyOne.GetAsync();
            }).GetAwaiter().GetResult();
            //process it
            Task.Run(async () =>
            {
                var response = await item.propertyTwo.GetAsync();
            }).GetAwaiter().GetResult();
            //process it
            Task.Run(async () =>
            {
                var response = await item.propertyThreee.GetAsync();
            }).GetAwaiter().GetResult(); …