WPF Dashed Border Control

I want to make a control that inherits from Border and simply allows me to specific a Stroke开发者_运维知识库DashArray to dash the border line.

I don't want to use the 'google' suggested hacks i.e. rectangles etc as I want the flexibility the border control gives.

However, I have no experience with creating custom controls and don't know where to start?

Could you point me in the right direction

Thanks!

Still not optimal but how about using the solution from the link by Matt Hamilton as a VisualBrush

Comparison using VisualBrush with dashed Rectangle and SolidColorBrush

<Border BorderThickness="3,2,1,0" CornerRadius="10">
    <Border.BorderBrush>
        <VisualBrush>
            <VisualBrush.Visual>
                <Rectangle StrokeDashArray="1.0 1.0"
                           Stroke="Red"
                           StrokeThickness="{Binding RelativeSource={RelativeSource AncestorType={x:Type Border}},
                                                     Path=BorderThickness,
                                                     Converter={StaticResource ThicknessMaxConverter}}"
                           RadiusX="{Binding RelativeSource={RelativeSource AncestorType={x:Type Border}}, Path=CornerRadius.TopRight}"
                           RadiusY="{Binding RelativeSource={RelativeSource AncestorType={x:Type Border}}, Path=CornerRadius.BottomLeft}"
                           Width="{Binding RelativeSource={RelativeSource AncestorType={x:Type Border}}, Path=ActualWidth}"
                           Height="{Binding RelativeSource={RelativeSource AncestorType={x:Type Border}}, Path=ActualHeight}"/>
            </VisualBrush.Visual>
        </VisualBrush>
    </Border.BorderBrush>
</Border>

ThicknessMaxConverter

public class ThicknessMaxConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        Thickness thickness = (Thickness)value;
        double horizontalMax = Math.Max(thickness.Left, thickness.Right);
        double verticalMax = Math.Max(thickness.Top, thickness.Bottom);
        return Math.Max(horizontalMax, verticalMax);
    }
    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}

Sorry this is a bit late, but here's a solution for WPF using the StrokeDashArray property.

ellipse Ellipse = new Ellipse();
/*code to change ellipse size, margin, color, etc*/
ellipse.StrokeDashArray=new DoubleCollection(new double[] {4, 3})
//First number is the dash length, second number the dash gap

I realize this is c# code and not XML, but the property is still the same. If you want more control of your dashes, use the other "Stroke" properties for controls found here.