#1,157 – Overridden Default Property Values Appear in Property Pane

In an earlier example of a custom control, we used the OverrideMetadata method to provide new default values for several dependency properties, as used in our control.  For example, we set the Stroke property to a green brush and StrokeThickness to 10.0.

        static CircularProgress()
        {
            Brush myGreenBrush = new SolidColorBrush(Color.FromArgb(255, 6, 176, 37));
            myGreenBrush.Freeze();

            StrokeProperty.OverrideMetadata(
                typeof(CircularProgress),
                new FrameworkPropertyMetadata(myGreenBrush));
            FillProperty.OverrideMetadata(
                typeof(CircularProgress),
                new FrameworkPropertyMetadata(Brushes.Transparent));

            StrokeThicknessProperty.OverrideMetadata(
                typeof(CircularProgress),
                new FrameworkPropertyMetadata(10.0));
        }

These new values will show up as expected in the property pane within Visual Studio. Below, we can see both the green brush for Stroke and the value of 10.0 for StrokeThickness.

1157-001

About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

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