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Editorial Team
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Asked: 2026-06-05T00:11:53+00:00

I tried to implement treeview with 4 levels using WPF/C#.Net 4.0.It loads all 4

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I tried to implement treeview with 4 levels using WPF/C#.Net 4.0.It loads all 4 levels but can’t select 4th level and when selecting 3rd level it select group with 4th level.
Continent->Country->District->Artifacts is one structure but there is another one Continent->Products->Artifacts

Resource DataTemplates->

<DataTemplate x:Key="DistrictTemplates">
<StackPanel Orientation="Horizontal">   
<TextBlock Text="{Binding Path=ArtifactName}" />
</StackPanel>
</DataTemplate>

<DataTemplate x:Key="CountryTemplate">
<TreeViewItem ItemsSource="{Binding Path=District}" 
ItemTemplate="  {StaticResource DistrictTemplates}" 
Header="{Binding Path=Code}">           
</TreeViewItem>
</DataTemplate>

TreeView code->

<TreeView Name="treeExplorer" MouseDoubleClick="TreeView_MouseDoubleClick" SelectedItemChanged="treeExplorer_SelectedItemChanged">
 <TreeViewItem Name="tviDefinition" IsExpanded="True" Header="Continent">
<TreeViewItem ItemsSource="{Binding Path=Country}" ItemTemplate="{StaticResource CountryTemplate}" Header="Country" />
</TreeViewItem>
</TreeView>

there are some other treeItems as well.I can’t use inline template inside the TreeView.Resources and also im confused if can use this HierarchicalDataTemplate sine i cant call Country.Districts.ArtifactName and got two hierarchies but I can call Country.Districts() and then Districts has code property and using code i can find Artifacts.And im using datatemplates inside usercontrol.resources
How would I be able to do this?

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1 Answer

  1. Editorial Team

    Finally I managed to solve this.Thanks Josh and everyone.

    Resource DataTemplates->

    <DataTemplate x:Key="DistrictTemplates">
<StackPanel Orientation="Horizontal">   
<TextBlock Text="{Binding Path=ArtifactName}" />
</StackPanel>
</DataTemplate>

<HierarchicalDataTemplate x:Key="CountryTemplate" DataType="Continent.Countries" ItemsSource="{Binding Path=District}" ItemTemplate="{StaticResource DistrictTemplates}">
<TextBlock Text="{Binding Path=Code}"/>    
</HierarchicalDataTemplate>

    TreeView code->

    <TreeView Name="treeExplorer" MouseDoubleClick="TreeView_MouseDoubleClick" SelectedItemChanged="treeExplorer_SelectedItemChanged">
<TreeViewItem Name="tviDefinition" IsExpanded="True" Header="Continent">
<TreeViewItem ItemsSource="{Binding Path=Country}" ItemTemplate="{StaticResource CountryTemplate}" Header="Countries" />
</TreeViewItem>
</TreeView>
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