How to use WPF custom control properties in XAML Template?

Polygon. Points is of type PointCollection . I don't believe a Point fits that type.

You will need to either change the type of PlayPoints or use a IValueConverter to make the change it's type.

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I've created a custom control that is intended to be used as a button but has properties to specify points for a polygon (to be drawn inside the button) and two colors for the gradient. I've declared all the properties in the code and then written the template in the XAML but it doesn't seem to be working. If I hard-code the values into the XAML it works just fine but nothing seems to be happening if I use the property values through TemplateBinding.

Any ideas on how to get this to work? Here's my XAML: And here's the code for the custom control: public class GradientButton : Button { internal static DependencyProperty GradientStartProperty; internal static DependencyProperty GradientEndProperty; internal static DependencyProperty PlayPointsProperty; static GradientButton() { GradientStartProperty = DependencyProperty. Register("GradientStart", typeof(Color), typeof(GradientButton)); GradientEndProperty = DependencyProperty.

Register("GradientEnd", typeof(Color), typeof(GradientButton)); PlayPointsProperty = DependencyProperty. Register("PlayPoints", typeof(Point), typeof(GradientButton)); } public Color GradientStart { get { return (Color)base. GetValue(GradientStartProperty); } set { SetValue(GradientStartProperty, value); } } public Color GradientEnd { get { return (Color)base.

GetValue(GradientEndProperty); } set { SetValue(GradientEndProperty, value); } } public Point PlayPoints { get //hardcoded return at the moment to get it to work, but this will change later { System.Collections.Generic. List result = new System.Collections.Generic.List(); double left = this. Width / 2.77; double top = this.

Height / 4.17; double right = this. Width / 1.43; double middle = this. Height / 2.0; double bottom = this.

Height / 1.32; result. Add(new Point(left, top)); result. Add(new Point(right, middle)); result.

Add(new Point(left, bottom)); return result.ToArray(); } set { SetValue(PlayPointsProperty, value); } } } c# .net wpf xaml link|improve this question asked Jul 6 '10 at 20:19Sonny Boy2,0271830 92% accept rate.

Polygon. Points is of type PointCollection. I don't believe a Point fits that type.

You will need to either change the type of PlayPoints or use a IValueConverter to make the change it's type.

Thanks. That sorted the issue for the polygon. It is now drawing correctly.

My colors are still a problem though... – Sonny Boy Jul 6 '10 at 20:32.

Try using this instead for your Color bindings: Color="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=GradientStart}" TemplateBinding only works in limited situations where declarations are in elements of the visual tree of a ControlTemplate, which is not the case for your LinearGradientBrush. You can see the same behavior, and use the same fix, inside Trigger Setters in a ControlTemplate.

Sorry, John. I tried those changes to no avail. No exceptions, but no change in gradient on my Ellipse.

– Sonny Boy Jul 6 '10 at 22:31 What is it that you're seeing for your Ellipse? Are you getting errors in your Output window? – John Bowen Jul 6 '10 at 22:59 1 No errors, and the ellipse's background is just plain white.

No colors and no gradient. It looks exactly the same as if I was applying no background at all. – Sonny Boy Jul 7 '10 at 17:17.

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