在异步方法中始终使用 WhenAll 在需要同步等待且确定不会造成死锁的场景下使用 WaitAll 在UI 应用程序中避免使用 WaitAll 需要处理多个异常时,使用 WhenAll 并检查任务的 Exception 属性
在使用WhenAll时,如果你在非异步上下文中使用它(即没有使用async和await),你可能需要等待它的完成,例如通过调用Result或者Wait方法。 WhenAll返回一个Task<Task[]>类型的对象,你可以通过访问.Result来获取已完成的任务列表。 如果你需要对每个任务单独进行操作,考虑使用Task.WhenAny或者Task.WhenAll结合 LINQ 的Select方法。
1.无限等待# 我们在使用 WhenAll 和 WaitAll 时,一定得要注意:1.必须添加超时时间,防止无限等待 2.等待的 Task 一定要保证是启动的。 比如下面这种写法: using System;using System.Collections.Generic;using System.Threading.Tasks; namespace TaskForWhenAll{ class Program { static void Main(string[] args)...
1.无限等待# 我们在使用 WhenAll 和 WaitAll 时,一定得要注意:1.必须添加超时时间,防止无限等待 2.等待的 Task 一定要保证是启动的。 比如下面这种写法: 代码语言:javascript 复制 using System;using System.Collections.Generic;using System.Threading.Tasks;namespace TaskForWhenAll{classProgram{staticvoidMain(st...
在 MySQL 运维过程中，锁等待和死锁问题是令各位 DBA 及开发同学非常头痛的事。出现此类问题会造成业务...
In this example, Task.WaitAll blocks the main thread until all three tasks are complete. What is Task.WhenAll? Task.WhenAll is an asynchronous method that returns a single task that is completed when all the provided tasks have been completed. Unlike Task.WaitAll, it does not block the...
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Task.WhenAll(task1, task2); Task.WaitAll(task1, task2); Or is await Task.WhenAll(task1, task2); Task.WaitAll(task1, task2); the same? PowerShell using System; using System.Threading.Tasks; namespace DemoApplication{ public class Program{ static void Main(string[] args){ Task task1...
The Task.WaitAll blocks the current thread until all other tasks have completed execution. The Task.WhenAll method is used to create a task that will complete if and only if all the other tasks have completed.So, if you are using Task.WhenAll you will get a task object that isn’t ...
waitall-vs-whenall-dotnet What is the difference between Task.WaitAll and Task.WhenAll? Execution Task.WaitAllblocks the current thread until everything has completed. Task.WhenAllreturns ataskwhich represents the action of waiting until everything has completed. ...