Bind a value to other in WPF UserControl
I have an WPF UserControl that has a property IsSelected. In that control I have a Border(the control is circular, si I have a circle-Ellipse) around, that should appear only if the control IsSelected.
<GeometryDrawing>
<GeometryDrawing.Pen>
<!-- HERE ==> Thickness = IIF(IsSelected, 2, 0) -->
<Pen Brush="blue" Thickness="2"/>
</GeometryDrawing.Pen>
<GeometryDrawing.Geometry>
<GeometryGroup>
<EllipseGeometry x:Name="Border"
Center="0,0" RadiusX="5" Ra开发者_Python百科diusY="5"/>
</GeometryGroup>
</GeometryDrawing.Geometry>
</GeometryDrawing>
How can I bind the pen's thickness?
You'll need a Control Template with TemplateBinding. You will also need a TypeConverter that will transform boolean value into thickness integer.
Something like:
<Pen Thickness="{TemplateBinding IsSelected,
Converter={StaticResource BooleanToSizeConverter}" />
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