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Adding a ResourceDictionary to a TreeView from another assembly

I have a TreeView item that I am trying to set to DataTemplates from a resource dictionary that is defined in another assembly. I use a fairly simple approach:

<TreeView x:Name="treeView"
                  ItemsSource="{Binding Path=Vehicles}">
            <TreeView.Resources>                
                <ResourceDictionary>
                    <ResourceDictionary.MergedDictionaries>
                        <ResourceDictionary Source="pack://application:,,,/CarsLib;component/TreeTemplateDictionary.xaml"/>
                    </ResourceDictionary.MergedDictionaries>
                </ResourceDictionary>
            </TreeView.Resources>
        </TreeView>

However. It doesn't seem to work. I debugged it and noticed the ResourceDictionary is loaded. Please help me understand what I am missing. ResourceDictionary looks like this:

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                xmlns:local="clr-namespace:CarsLib">
<HierarchicalDataTemplate x:Key="StationTreeViewTemplate"
                          DataType="{x:Type local:Station}" 
                          ItemsSource="{Binding Path=FamounsModels}">
    <DockPanel>
        <TextBlock Text="{Binding Path=Name}" Margin="3,3,3,3" />
        <TextBlock Text="{Binding Path=EngineSize}" Margin="3,3,3,3" />
    </DockPanel>
</HierarchicalDataTemplate>

Thank,

Izhgar Lotem

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2 answers


I managed to resolve this error. I retired x:Key

from HierarchicalDataTemplate

inside ResourceDictionary

.



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I was actually trying to do something similar until I found a solution. From your code, I believe that the assembly containing the resources you are trying to load \ set is called "CarsLib.dll" or at least the assembly is internally called "CarsLib". However, I believe your code should look like this:

YourXamlWithTheTreeView.xaml



<TreeView x:Name="treeView"
          ItemsSource="{Binding Path=Vehicles}">
    <TreeView.Resources>                
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="/Carslib;component/TreeTemplateDictionary.xaml"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </TreeView.Resources>
</TreeView>
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