CODEWITHSUNDEEP
c#wpfvb.nettreeview
Rui
Rui

Reputation: 386

wpf TreeView HierarchicalDataTemplate related

I have a question related to HierarchicalDataTemplate. Is it possible to keep adding HierarchicalDataTemplate via code or there is no way to do that. I'm asking this because in my case later i don't know if i will need more child nodes than these i have now.

below you can see my treeview:

<TreeView Background="#FFF0F0F0" BorderBrush="#FFE5E2DB" IsEnabled="{Binding isAllesEnabled}" ItemsSource="{Binding LijstRechten, UpdateSourceTrigger=PropertyChanged, NotifyOnSourceUpdated=True}" Margin="0,0,0,0" Name="dgStamOverzichtGebruikerRechten" VirtualizingStackPanel.IsVirtualizing="True" VirtualizingStackPanel.VirtualizationMode="Recycling">
    <TreeView.ItemTemplate>
        <!-- Top Level -->
        <HierarchicalDataTemplate ItemsSource="{Binding Childs}">
            <CheckBox IsChecked="{Binding isChecked}" Content="{Binding naam}" />

            <!-- 1st Child Level -->
            <HierarchicalDataTemplate.ItemTemplate>
                <HierarchicalDataTemplate ItemsSource="{Binding Childs}">
                    <CheckBox IsChecked="{Binding isChecked}" Content="{Binding naam}" />

                    <!-- 2nd Child Level -->
                    <HierarchicalDataTemplate.ItemTemplate>
                        <HierarchicalDataTemplate ItemsSource="{Binding Childs}">
                            <CheckBox IsChecked="{Binding isChecked}" Content="{Binding naam}" />

                            <!-- 3rd Child Level -->
                            <HierarchicalDataTemplate.ItemTemplate>
                                <DataTemplate>
                                    <CheckBox IsChecked="{Binding isChecked}" Content="{Binding naam}" />
                                </DataTemplate>
                            </HierarchicalDataTemplate.ItemTemplate>

                        </HierarchicalDataTemplate>
                    </HierarchicalDataTemplate.ItemTemplate>

                </HierarchicalDataTemplate>
            </HierarchicalDataTemplate.ItemTemplate>

        </HierarchicalDataTemplate>
    </TreeView.ItemTemplate>
    <TreeView.ItemContainerStyle>
        <Style TargetType="{x:Type TreeViewItem}">
            <Setter Property="IsExpanded"  Value="{Binding IsExpanded, Mode=TwoWay}"/>
            <Setter Property="Margin" Value="2"/>
            <!--<Setter Property="IsSelected" Value="{Binding isSelected, Mode=TwoWay}"/>
            <EventSetter Event="Selected" Handler="TreeViewSelectedItemChanged" />-->
        </Style>
    </TreeView.ItemContainerStyle>
</TreeView>

Thanks in advance!

Upvotes: 0

Views: 2718

Answers (1)

Nitin Purohit
Nitin Purohit

Reputation: 18580

For your problem, assuming all the childs are of same type.. just define one HierarchicalDataTemplate in your window's resources without any x:key and put the DataType which is type of your Child object...Your whole tree will populate.. 

<HierarchicalDataTemplate DataType="{local:YourParentType}"
                              ItemsSource="{Binding Childs}">
    <CheckBox IsChecked="{Binding isChecked}" Content="{Binding naam}" />
</HierarchicalDataTemplate>


<HierarchicalDataTemplate DataType="{local:YourChildType}" 
                          ItemsSource="{Binding Childs}">
    <CheckBox IsChecked="{Binding isChecked}" Content="{Binding naam}" />
</HierarchicalDataTemplate>

here assuming local is the namespace (xmlns) in which your Child class is defined

Upvotes: 2

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