Bind Converter to the parent resource in xaml - wpf

Question

I have a usercontrol1.xaml where I have a resource defined:
<UserControl x:Class="FrameworkDemo.usercontrol1View">
<UserControl.Resources>
<local:DemoManger x:Key="demoManager"/>
<local:DemoManagerConverterx x:Key="demoManagerConverter" Manager="{StaticResource strategyManager}"/>
</UserControl.Resources>
<telerik:RadTileView MinimizedItemsPosition="Top">
<telerik:RadTileViewItem>
<local:UserControl2View/>
</telerik:RadTileViewItem>
<telerik:RadTileViewItem>
........
</telerik:RadTileViewItem>
</telerik:RadTileView>
</UserControl>
Then in the user control view 2, I want to have this situation:
ss
<UserControl x:Class="FrameworkDemo.usercontrol2View">
<DockPanel>
<ComboBox MinWidth="270" Margin="0,0,5,5"
ItemsSource="{Binding Path=Demos, RelativeSource={RelativeSource AncestorType={x:Type local:DemoManager}}}"
SelectedValue="{Binding Path=CurrentStrategy, Converter={ ????}, Mode=TwoWay}"
IsEnabled="{Binding CanRefreshExecutionList, ElementName=Instance}"
DropDownOpened="StrategyComboBox_DropDownOpened">
</DockPanel>
</UserControl>
I was able to link to the parent control for the ItemSource, but for the converter how can I do it?. I can not event move the resource definition from control1 to control2. Inside of the RadTileViewItem is not possible to add another resource. Exactly in usercontrol1View I have a tabcontrol inside the RadTileViewItem and inside the tabiteam i have inlcluded the UserControl2View.
How can I link to the parent resource for the covnerter?

Answer 1

How can I link to the parent resource for the covnerter?
You can't. If you need to use the same converter in both UserControls, you have defined the resource in the wrong place actually.
You could either move it to your App.xaml file:
<Application x:Class="WpfApp1.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WpfApp1"
StartupUri="MainWindow.xaml">
<Application.Resources>
...
<local:DemoManagerConverterx x:Key="demoManagerConverter" Manager="{StaticResource strategyManager}"/>
</Application.Resources>
</Application>
Then you will be able to reference it across your entire application. The other option would be to define another resource of the same type in UserControl2:
<DockPanel>
<DockPanel.Resources>
<local:DemoManagerConverterx x:Key="demoManagerConverter" Manager="{StaticResource strategyManager}"/>
</DockPanel.Resources>
<ComboBox MinWidth="270" Margin="0,0,5,5"
ItemsSource="{Binding Path=Demos, RelativeSource={RelativeSource AncestorType={x:Type local:DemoManager}}}"
SelectedValue="{Binding Path=CurrentStrategy, Converter={StaticResource demoManagerConverter}, Mode=TwoWay}"
IsEnabled="{Binding CanRefreshExecutionList, ElementName=Instance}"
DropDownOpened="StrategyComboBox_DropDownOpened" />
</DockPanel>
But you can't reference a resource that is defined in a parent element using bindings.

Answer 2

I suppose you wanted bind converter object to the binding's Converter property.
You can't bind to the binding's Converter property since it is not a ´DependencyProperty´. You can acces a resource object and bind it e.g. to the ´Tag´, but it doesn't solve your problem:
<ComboBox MinWidth="270" Margin="0,0,5,5"
ItemsSource="{Binding Path=Demos, RelativeSource={RelativeSource AncestorType={x:Type local:DemoManager}}}"
SelectedValue="{Binding Path=CurrentStrategy, Converter={ ????}, Mode=TwoWay}"
Tag="{Binding Path='Resources[demoManagerConverter]', RelativeSource={RelativeSource AncestorType={x:Type localFrameworkDemo:usercontrol1View}}}"
IsEnabled="{Binding CanRefreshExecutionList, ElementName=Instance}"
DropDownOpened="StrategyComboBox_DropDownOpened">
If object is nested, you could just set(not bind) the Converter to the resource object:
Converter = {StaticResource demoManagerConverter}