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fixed broken links for code examples #4309

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12 changes: 6 additions & 6 deletions ...rallel/concrt/creating-asynchronous-operations-in-cpp-for-windows-store-apps.md
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Expand Up @@ -152,27 +152,27 @@ Consider a C++ XAML app that reads a file from disk, finds the most common words

Update the `Grid` element in MainPage.xaml to include a `ProgressRing` element and a `TextBlock` element. The `ProgressRing` indicates that the operation is in progress and the `TextBlock` shows the results of the computation.

[!code-xml[concrt-windowsstore-commonwords#1](../../parallel/concrt/codesnippet/xaml/creating-asynchronous-operations-in-cpp-for-windows-store-apps_6.xaml)]
[!code-xml[concrt-windowsstore-commonwords#1](../../parallel/concrt/codesnippet/Xaml/creating-asynchronous-operations-in-cpp-for-windows-store-apps_6.xaml)]

Add the following `#include` statements to *pch.h*.

[!code-cpp[concrt-windowsstore-commonwords#2](../../parallel/concrt/codesnippet/cpp/creating-asynchronous-operations-in-cpp-for-windows-store-apps_7.h)]
[!code-cpp[concrt-windowsstore-commonwords#2](../../parallel/concrt/codesnippet/CPP/creating-asynchronous-operations-in-cpp-for-windows-store-apps_7.h)]

Add the following method declarations to the `MainPage` class (MainPage.h).

[!code-cpp[concrt-windowsstore-commonwords#3](../../parallel/concrt/codesnippet/cpp/creating-asynchronous-operations-in-cpp-for-windows-store-apps_8.h)]
[!code-cpp[concrt-windowsstore-commonwords#3](../../parallel/concrt/codesnippet/CPP/creating-asynchronous-operations-in-cpp-for-windows-store-apps_8.h)]

Add the following **`using`** statements to MainPage.cpp.

[!code-cpp[concrt-windowsstore-commonwords#4](../../parallel/concrt/codesnippet/cpp/creating-asynchronous-operations-in-cpp-for-windows-store-apps_9.cpp)]
[!code-cpp[concrt-windowsstore-commonwords#4](../../parallel/concrt/codesnippet/CPP/creating-asynchronous-operations-in-cpp-for-windows-store-apps_9.cpp)]

In MainPage.cpp, implement the `MainPage::MakeWordList`, `MainPage::FindCommonWords`, and `MainPage::ShowResults` methods. The `MainPage::MakeWordList` and `MainPage::FindCommonWords` perform computationally-intensive operations. The `MainPage::ShowResults` method displays the result of the computation in the UI.

[!code-cpp[concrt-windowsstore-commonwords#5](../../parallel/concrt/codesnippet/cpp/creating-asynchronous-operations-in-cpp-for-windows-store-apps_10.cpp)]
[!code-cpp[concrt-windowsstore-commonwords#5](../../parallel/concrt/codesnippet/CPP/creating-asynchronous-operations-in-cpp-for-windows-store-apps_10.cpp)]

Modify the `MainPage` constructor to create a chain of continuation tasks that displays in the UI the common words in the book *The Iliad* by Homer. The first two continuation tasks, which split the text into individual words and find common words, can be time consuming and are therefore explicitly set to run in the background. The final continuation task, which updates the UI, specifies no continuation context, and therefore follows the apartment threading rules.

[!code-cpp[concrt-windowsstore-commonwords#6](../../parallel/concrt/codesnippet/cpp/creating-asynchronous-operations-in-cpp-for-windows-store-apps_11.cpp)]
[!code-cpp[concrt-windowsstore-commonwords#6](../../parallel/concrt/codesnippet/CPP/creating-asynchronous-operations-in-cpp-for-windows-store-apps_11.cpp)]

> [!NOTE]
> This example demonstrates how to specify execution contexts and how to compose a chain of continuations. Recall that by default a task that's created from an asynchronous operation runs its continuations on the apartment that called `task::then`. Therefore, this example uses `task_continuation_context::use_arbitrary` to specify that operations that do not involve the UI be performed on a background thread.
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