TPL订购任务结果 [英] TPL Orderring Task results

问题描述

有什么方法可以按顺序收集任务结果.对于前，我有一个数组的100个项目(值0-100).我创建10个任务，每个任务处理数组(1-10,10-20，...)中的10个项目，并开始并行运行.现在，我需要一种机制来收集所有任务的结果 为了.像来自Task1，taks2，Task3 ..... etc

Is there any way to gather task results in order. For ex, i have an array of 100 items (values 0-100). I create 10 tasks each process 10 items from array (1-10,10-20,...)and starts running parallel. Now, i need a mechanism to gather results from all tasks in order. like results from Task1,taks2,Task3 .....etc

推荐答案

只需保存对每个任务的引用即可识别并使用Task.WaitAll方法等待所有任务完成，然后按照您喜欢的顺序来评估每个任务的result属性:

Just save a reference to each task to be able to identify it and use the Task.WaitAll method to wait for all tasks to complete and then evaliate the result property of each of the tasks in your preferred order:

            Task<int> t1 = Task.Run(()=> { /* process 0-10*/ return 0; });
            Task<int> t2 = Task.Run(() => { /* process 11-20*/ return 1; });
            Task<int> t3 = Task.Run(() => { /* process 21-30*/ return 2; });
            //...

            Task.WaitAll(t1, t2, t3);

            int firstResult = t1.Result;
            int secondResult = t2.Result;
            //...

如何:从任务中返回值: https://msdn.microsoft.com/zh-CN/library/dd537613(v=vs.110).aspx

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