从MSDN的Forum上看到别人提供的解决方案，感觉还是比较靠谱，所以就保存下来。
CancellationTokenSource cts = new CancellationTokenSource();
Task t1 = Task.Factory.StartNew(() =>
{
if (!cts.IsCancellationRequested)
{
try
{
//task body that may throw
Console.WriteLine("Task1");
}
catch
{
cts.Cancel();
throw new OperationCanceledException(cts.Token); //the task final state will be Cancelled
//the exception can be ignored if needed
}
if (cts.IsCancellationRequested)
{
//depending on the scenario
//ignore any computed result, do not persist any data, revert all changes
}
}
}, cts.Token);
Task t2 = Task.Factory.StartNew(() =>
{
if (!cts.IsCancellationRequested)
{
try
{
//task body that may throw
Console.WriteLine("Task2");
}
catch
{
cts.Cancel();
throw new OperationCanceledException(cts.Token); //the task final state will be Cancelled
}
if (cts.IsCancellationRequested)
{
//depending on the scenario
//ignore any computed result, do not persist any data, revert all changes
}
}
}, cts.Token);
2. In case that you would like to avoid try/catch in every body you could use a Task Continuation approach like below. However with this approach, the application will pay the price of new tasks being created. At the same time the Cancellation will be delayed.
CancellationTokenSource cts = new CancellationTokenSource();
Task t1 = Task.Factory.StartNew(() =>
{
if (!cts.IsCancellationRequested)
{
//task body that may throw
Console.WriteLine("Task1");
if (cts.IsCancellationRequested)
{
//depending on the scenario
//ignore any computed result, do not persist any data, revert all changes
}
}
}, cts.Token).ContinueWith((task) =>
{
cts.Cancel();
//observe the exception
Exception ex = task.Exception;
}, TaskContinuationOptions.OnlyOnFaulted|TaskContinuationOptions.ExecuteSynchronously );
Task t2 = Task.Factory.StartNew(() =>
{
if (!cts.IsCancellationRequested)
{
//task body that may throw
Console.WriteLine("Task2");
if (cts.IsCancellationRequested)
{
//depending on the scenario
//ignore any computed result, do not persist any data, revert all changes
}
}
}, cts.Token).ContinueWith((task) =>
{
cts.Cancel();
//observe the exception
Exception ex = task.Exception;
}, TaskContinuationOptions.OnlyOnFaulted | TaskContinuationOptions.ExecuteSynchronously);
参考，转载：
https://social.msdn.microsoft.com/Forums/vstudio/en-US/2cbe1fa7-c7dd-4e88-8773-2e3bb1665e2e/how-to-cancel-other-task-when-there-is-an-exception-in-one-of-the-task?forum=parallelextensions
基础才是编程人员应该深入研究的问题，比如:
1）List/Set/Map内部组成原理|区别
2）mysql索引存储结构&如何调优/b-tree特点、计算复杂度及影响复杂度的因素。。。
3）JVM运行组成与原理及调优
4）Java类加载器运行原理
5）Java中GC过程原理|使用的回收算法原理
6）Redis中hash一致性实现及与hash其他区别
7）Java多线程、线程池开发、管理Lock与Synchroined区别
8）Spring IOC/AOP 原理；加载过程的。。。
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