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What is task WaitAll?
The static Task. WaitAll() method is used to wait for a number of tasks to complete, so it will not return until all the given tasks will either complete, throw an exception or be cancelled. This method uses the same overloading pattern as the Wait() method.
Does Task WhenAll start the tasks?
Task. WhenAll doesn’t start tasks. The general pattern is that methods that return a Task , return a hot Task .
When should I use Task?
You can use tasks when you would like to execute concurrent activities. If you need a high degree of parallelism, tasks are never a good choice. It is always advisable to avoid using thread pool threads in ASP.Net. Hence, you should refrain from using Task.
Is task WhenAll parallel?
WhenAll. Parallel itself is synchronous. Parallel. ForEach is multiple threads solution while Task.
Is Task WhenAll parallel?
Does Task WaitAll run in parallel?
WaitAll() to run a bunch of tasks in parallel. Both the methods do more or less the same, the main difference is that Task. WaitAll() waits for all of the provided Task objects to complete execution, blocking the current thread until everything has completed.
What’s the difference between task waitall and Task.WhenAll?
So, if you are using Task.WhenAll you will get a task object that isn’t complete. However, it will not block but will allow the program to execute. On the contrary, the Task.WaitAll method call actually blocks and waits for all other tasks to complete.
Which is the await method in Task.WhenAll?
As you can see in the code above, the AwaitAndProcessAsync method is the method that does the await and extra processing for us. We first create the tasks, then pipe them though AwaitAndProcessAsync method and get a list of Task.
How to illustrate the different use cases of waitall?
Can you provide some sample code to illustrate the different use cases ? Task.WaitAll blocks the current thread until everything has completed. Task.WhenAll returns a task which represents the action of waiting until everything has completed.
What’s the difference between whenall and waitall in C?
While JonSkeet’s answer explains the difference in a typically excellent way there is another difference: exception handling. Task.WaitAll throws an AggregateException when any of the tasks throws and you can examine all thrown exceptions. The await in await Task.WhenAll unwraps the AggregateException and ‘returns’ only the first exception.