This post is from App Dev Manager, Omer Amin who covers how to update Windows Form UI elements using worker threads.

In a typical Windows Forms .NET application, the UI elements are created and updated by the main thread. This thread is also responsible for processing Windows messages. For this reason, it is recommended to keep message processing short and simple. Long running operations performed on this thread will cause incoming Windows messages to queue up. If messages don’t get processed in a timely manner, the application will appear hung to the user and provide a poor user experience.

Continue on Omer’s personal blog.

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