C# 11 guide with Calling Asynchronous Methods from Synchronous Contexts in WPF Application
I've looked through the documentation and I'm still confused about I've been struggling with this for a few days now and could really use some help. I'm working with a question with calling asynchronous methods from a synchronous context within my WPF application. Specifically, I'm trying to execute an async method that fetches data from an API when a button is clicked, but I'm getting a `System.InvalidOperationException: The calling thread want to access this object because a different thread owns it.` behavior. Here's a simplified version of my code: ```csharp private async void Button_Click(object sender, RoutedEventArgs e) { var data = await FetchDataAsync(); UpdateUI(data); } private async Task<string> FetchDataAsync() { using (var httpClient = new HttpClient()) { var response = await httpClient.GetStringAsync("https://api.example.com/data"); return response; } } private void UpdateUI(string data) { // Trying to update a TextBlock from here myTextBlock.Text = data; } ``` The `FetchDataAsync` method works fine when called from an async context, but when I try to update the UI in `UpdateUI`, I receive the `InvalidOperationException`. I've tried using `Dispatcher.Invoke` to marshal the call to the UI thread, but that doesn't seem to resolve the scenario. Also, I am aware that the `async void` signature for the `Button_Click` handler can lead to unobserved exceptions, but I need to change it to `async Task` since it must match the event handler signature. I've also tried to refactor the `UpdateUI` method to be asynchronous, but it looks like I'm exploring trying to find a solution that works within a WPF application structure. Can anyone suggest a way to handle this situation without running into threading issues? Any advice or best practices would be appreciated. I'm using C# 3.9 in this project. Has anyone dealt with something similar?