👀 Views: 2 💬 Answers: 1 📅 Created: 2025-06-08

visual-studio wpf extension-development C#

I'm optimizing some code but I've been researching this but I'm developing a Visual Studio extension that includes a custom tool window displaying a WPF UserControl... I have encountered an scenario where the UserControl doesn't reflect changes after I modify the underlying data context. I've implemented the INotifyPropertyChanged interface on my data model, but the tool window fails to update its UI unless I close and reopen it. Here's a simplified version of my data context: ```csharp public class MyDataContext : INotifyPropertyChanged { private string _myProperty; public string MyProperty { get => _myProperty; set { if (_myProperty != value) { _myProperty = value; OnPropertyChanged(nameof(MyProperty)); } } } public event PropertyChangedEventHandler PropertyChanged; protected virtual void OnPropertyChanged(string propertyName) { PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName)); } } ``` In my tool window, I set the data context like this: ```csharp public partial class MyToolWindowControl : UserControl { public MyToolWindowControl() { InitializeComponent(); DataContext = new MyDataContext(); } } ``` After making changes to `MyProperty` in the code behind, I expected that any UI element bound to `MyProperty` would update automatically. However, it doesn't refresh until I reopen the tool window. I tried calling `DataContext = DataContext;` after setting `MyProperty`, but that didn't help either. I also confirmed that the data context is properly set and that the property change notifications are being triggered by placing breakpoints in the `OnPropertyChanged` method. Is there something specific to Visual Studio extension development that I might be missing? Any advice on how to ensure the UserControl updates correctly would be greatly appreciated! Is there a better approach? I recently upgraded to C# latest.