98b0863553b4433df3060729a9caabe4 by 2025

Author:2025
Language: eng
Format: epub
Published: 2025-03-10T19:44:31+00:00

Chapter 3 Continuation and nested tasks

So, it becomes a detached child task that executes independently of its

parent. This is why the parent task does not care whether the child task is

completed.

Q&A Session

Q3.3 I understand that in the previous demonstration, you waited only

for the parent task to complete but not for the child task. So, if I replace the line parent.Wait(); with the line Task.WaitAll(parent, child); I can see whether the child task finishes its execution. Am I right?

No. In that code sample, the child task was nested. So, it was not in the

scope. So, your proposed code will cause the following compile-time error:

CS0103 The name 'child' does not exist in the current context

Q3.4 In the previous program, you used a Sleep statement in the main

thread. Was it necessary?

Nice catch. Indeed, it was not necessary. However, by placing this

Sleep statement, I increase the probability of showing the line "The child task has started." in the output.

Attached Nested Task

Let us uncomment the line //,TaskCreationOptions.AttachedToParent

in the previous code and execute the program again. This time, you must

see the completion status of the child task. Here is a sample output for you: The parent task has started.

The child task has started.

The child task has finished.

The parent task has finished now.

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