I'm having a problem with the following control template
| <Style TargetType="{x:Type local:SymbolFeature}" > |
| <Setter Property="Template"> |
| <Setter.Value> |
| <ControlTemplate TargetType="{x:Type local:SymbolFeature}"> |
| <Border x:Name="border"> |
| <Ellipse Fill="{TemplateBinding Foreground}" StrokeThickness="1" Stroke="Black" Width="40" Height="20" RenderTransformOrigin="0.5, 0.5"> |
| <Ellipse.RenderTransform> |
| <TransformGroup> |
| <TranslateTransform X="{Binding OffsetX, RelativeSource={RelativeSource TemplatedParent}}" |
| Y="{Binding OffsetY, RelativeSource={RelativeSource TemplatedParent}}" /> |
| <RotateTransform Angle="{Binding Angle, RelativeSource={RelativeSource TemplatedParent}}" /> |
| </TransformGroup> |
| </Ellipse.RenderTransform> |
| </Ellipse> |
| </Border> |
| <ControlTemplate.Triggers> |
| <Trigger Property="Visible" Value="False"> |
| <Setter Property="Visibility" Value="Collapsed" /> |
| </Trigger> |
| </ControlTemplate.Triggers> |
| </ControlTemplate> |
| </Setter.Value> |
| </Setter> |
| </Style> |
In the debugger console, I receive the following debug error:
System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=OffsetX; DataItem=null; target element is 'TranslateTransform' (HashCode=52727599); target property is 'X' (type 'Double')
System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=OffsetY; DataItem=null; target element is 'TranslateTransform' (HashCode=52727599); target property is 'Y' (type 'Double')
System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=Angle; DataItem=null; target element is 'RotateTransform' (HashCode=14347911); target property is 'Angle' (type 'Double')
SymbolFeature derives from Control, and Angle, OffsetX and OffsetY are implemented as Dependency Properties.There will be plenty of instances of this control in a window, and I worry the error will result in performance costs. I am also the type who hate to see compiler/debugger warnings, as I believe they are warnings for a reason.
How can I get rid of this debugger error? I was hoping I could use TemplateBindings, however, there seems to be some poblems with Inheritance context for the Transforms.
Regards,
Bjørnar