WPF UI thread-safe access

In WPF applications, updating UI from non-UI threads (such as file monitoring events) requires careful handling to avoid exceptions and program crashes. This is caused by the separation of UI threads and non-UI threads in WPF.

Use Dispatcher.Invoke() method

To safely access UI threads from non-UI threads, WPF provides the Dispatcher.Invoke() method. It allows you to queue the delegate to the scheduler for the UI thread, which ensures that the delegate will be executed when the UI thread is available.

Here is how you implement this method in your code:

Application.Current.Dispatcher.Invoke(new Action(() => { dataGridRows.Add(ds); }));

This ensures that UI threads safely add new lines to the dataGridRows

Invoke(), you can use other technologies to securely access UI threads, such as:

• Dependency Properties: Use the dependency property, when changed from a non-UI thread, it automatically synchronizes updates back to the UI.
• BackgroundWorker: Creates a BackgroundWorker thread to execute non-UI tasks and updates the UI on the main thread using its RunWorkerCompleted event.

By following these secure thread handling practices, you can avoid potential errors and ensure that your WPF application interacts correctly with UI threads.