How to force Visual Studio to update the UI?

Daniela 5 Reputation points
2023-07-31T07:37:01.19+00:00

I'm working on this Visual Studio extension, in the code below when the ToggleEnabled() function is called, it triggers OnToggleEnabled -> OnToggleEnabledHandler.

At private void OnToggleEnabledHandler() these attempts are not working, and the UI is not being updated.

With this, I'm trying to make the LayoutChangedHandler function get called.

How I could "force" Visual Studio to update its UI?

-Walkthrough-

A shortcut sent to VS triggers the Execute(AsyncPackage package) function, and it triggers the ToggleEnabled() function:

{
    private readonly IAdornmentLayer _layer;
    private readonly IWpfTextView _view;
    private readonly VariableExpander _variableExpander;
    private string _contentTypeName;

    public static bool Enabled { get; set; }
    public static event Action OnToggleEnabled;

    static ImageAdornmentManager()
    {
        Enabled = true;
    }

    public static void ToggleEnabled()
    {
        ThreadHelper.ThrowIfNotOnUIThread();

        Enabled = !Enabled;
        UIMessage.Show($"Comment: {Enabled}. Scroll editor window to update.");
        OnToggleEnabled?.Invoke();
    }

    public ImageAdornmentManager(IWpfTextView view)
    {
        _view = view;
        _layer = view.GetAdornmentLayer("ImageCommentLayer");
        _view.LayoutChanged += LayoutChangedHandler;
        _contentTypeName = view.TextBuffer.ContentType.TypeName;
        _view.TextBuffer.ContentTypeChanged += contentTypeChangedHandler;

        OnToggleEnabled += OnToggleEnabledHandler;
    }

        
    private void OnToggleEnabledHandler()
    {
        Console.Write("OnToggleEnabledHandler");
        _view.VisualElement.InvalidateMeasure();
        _view.VisualElement.InvalidateArrange();
        _view.VisualElement.InvalidateVisual();
        _view.LayoutChanged += (sender, e) => { };
    }
}

I have posted this same question on StackOverflow.

Visual Studio
Visual Studio
A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.
5,181 questions
Visual Studio Extensions
Visual Studio Extensions
Visual Studio: A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.Extensions: A program or program module that adds functionality to or extends the effectiveness of a program.
227 questions
{count} vote

2 answers

Sort by: Most helpful
  1. Leonardo 91 Reputation points
    2023-08-07T06:22:58.5033333+00:00

    Does someone else know how to trigger an update in the UI?


  2. Philip Schoeman 0 Reputation points
    2024-07-22T21:51:44.65+00:00

    I see it is an old post, but for those that are looking for a way to force an update in the UI. The only way I could find, was to measure it, it triggers a layout refresh:

    await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync(Package.DisposalToken);
    
    WpfTextView.VisualElement.Measure(WpfTextView.VisualElement.RenderSize);
    
    var size = WpfTextView.VisualElement.DesiredSize;
    
    0 comments No comments

Your answer

Answers can be marked as Accepted Answers by the question author, which helps users to know the answer solved the author's problem.