Can Async Methods Be Safely Used Within Constructors?

The Challenge of Asynchronous Operations within Constructors

Constructors present a unique challenge when dealing with asynchronous operations. The question of whether to use asynchronous methods (like getWritings()) within a constructor requires careful consideration.

Initial Approaches and Their Limitations

While using await within a constructor with an asynchronous method might seem intuitive, it can lead to unexpected issues. For instance, populating a LongListView this way might result in an empty list. Similarly, using .Result to retrieve the result synchronously blocks the UI thread, causing significant performance problems.

A More Robust Asynchronous Design

The solution lies in embracing the asynchronous nature of the data retrieval. The constructor shouldn't wait for the data; instead, it should initiate the download (getWritings()) and configure the UI to reflect the pending operation. Once the data is retrieved, the UI should then be updated to display it. This separation of data fetching and UI updates prevents UI freezes and improves the user experience.

Further Reading

For more in-depth information, please refer to these helpful resources:

• [Asynchronous Constructors Blog Post](link to blog post)
• [MSDN: Asynchronous Data-Binding](link to MSDN article)
• [MSDN: Asynchronous Best Practices](link to MSDN article)

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