WPF Binding to change fill color of ellipse

Question

How do I programmatically change the color of an ellipse that is defined in XAML based on a variable?

Everything I\'ve read on binding is based on collections and lists

Answer 1

what you will need to do is implement a custom converter to convert the colour to the brush object. Something like this...

public class ColorToBrushConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        System.Drawing.Color col = (System.Drawing.Color)value;
        Color c = Color.FromArgb(col.A, col.R, col.G, col.B);
        return new System.Windows.Media.SolidColorBrush(c);
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        SolidColorBrush c = (SolidColorBrush)value;
        System.Drawing.Color col = System.Drawing.Color.FromArgb(c.Color.A, c.Color.R, c.Color.G, c.Color.B);
        return col;
    }
}

And then specify that converter in your binding

Fill="{Binding Colors.Red, Converter={StaticResource ColorToBrushConverter }"