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Any update on when this feature will be added? I've tried the recommended workaround, binding to an ElementName, but this doesn't work either. The Value properties below are empty in the code behind.
<controls:TextControl x:Name="label_level" Text="((txt.heroUnitsScreen.label_level))" >
<controls:TextControl.TextParameters>
<common:ParameterViewData Key="currentLevel" Value="{Binding DataContext.HeroUnit.Level, ElementName=label_level}"/>
<common:ParameterViewData Key="actualWidth" Value="{Binding ActualWidth, ElementName=label_level}"/>
</controls:TextControl.TextParameters>
</controls:TextControl>
public static readonly DependencyProperty TextParametersProperty =
DependencyProperty.Register(nameof(TextParameters), typeof(ParameterCollection), typeof(TextControl),
new PropertyMetadata(null, OnTextParametersChanged));
public class ParameterCollection : FreezableCollection<ParameterViewData> { }
public class ParameterViewData : Freezable, ITextParameter
{
public string Key
{
get { return (string)GetValue(KeyProperty); }
set { SetValue(KeyProperty, value); }
}
public static readonly DependencyProperty KeyProperty = DependencyProperty.Register(
nameof(Key), typeof(string), typeof(ParameterViewData),
new PropertyMetadata(null));
public object Value
{
get { return (object)GetValue(ValueProperty); }
set { SetValue(ValueProperty, value); }
}
public static readonly DependencyProperty ValueProperty = DependencyProperty.Register(
nameof(Value), typeof(object), typeof(ParameterViewData),
new PropertyMetadata(null));
#if !NOESIS
protected override Freezable CreateInstanceCore()
{
return new ParameterViewData();
}
#endif |
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Hi, this issue was not planned for the next version yet, I'll add it to our roadmap.
I just verified that the workaround works as expected if you use Animatable as the base class for the params class:
public class ParameterViewData : Animatable
{
public string Key
{
get { return (string)GetValue(KeyProperty); }
set { SetValue(KeyProperty, value); }
}
public static readonly DependencyProperty KeyProperty = DependencyProperty.Register(
nameof(Key), typeof(string), typeof(ParameterViewData),
new PropertyMetadata(null));
public object Value
{
get { return (object)GetValue(ValueProperty); }
set { SetValue(ValueProperty, value); }
}
public static readonly DependencyProperty ValueProperty = DependencyProperty.Register(
nameof(Value), typeof(object), typeof(ParameterViewData),
new PropertyMetadata(null));
}
public class ParameterCollection : FreezableCollection<ParameterViewData> { }
public class TextControl : ContentControl
{
public ParameterCollection TextParameters
{
get { return (ParameterCollection)GetValue(TextParametersProperty); }
set { SetValue(TextParametersProperty, value); }
}
public static readonly DependencyProperty TextParametersProperty = DependencyProperty.Register(
"TextParameters", typeof(ParameterCollection), typeof(TextControl),
new PropertyMetadata(null, OnTextParametersChanged));
...
}</pre>
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