Question

Im making a herbal database program and I am having troubles setting up HierarchicalDataTemplates for my main data class.

Tree layout wanted:

• Glossary
  • Category1
    • Letter (Reduces overall list size)
      • Entry
        • Note1
        • Note2

• Herbs

  • Botanical Name

    • Alphabetical
      • Letter (Reduces overall list size)
        • Entry
    • By Family
      • Family
        • Entry

  • Common Name

    • Letter (Reduces overall list size)
      • Entry

NOTE: All entries have notes
NOTE2: Letter is a letter of the alphabet for sorting

Ex:

• a
  • apple
• b
  • bus

Main Class:

Public Class MainSystem
    Public herbs As New Dictionary(Of Integer, herbEntry)
    Public glossary As New Dictionary(Of Integer, glossaryEntry)
End Class

GlossaryEntry:

Public Class glossaryEntry
    Public Property ID As Integer
    Public Property Words As List(Of String) 'Each word is in the format: Catagory/word
    Public Property Notes As SortedDictionary(Of String, String)
End Class

HerbEntry:

Public Class herbEntry
    Public ID As Integer
    Public Property commonName As List(Of String)
    Public Property botanicalName As List(Of String)
    Public Property PlantID As PlantID
End Class

EDIT: Thanks to the link from @AngelWPF I have got the tree displaying my object. But, currently the tree looks like this:

• Herbs
  • Common Name
    • CommonName item from entry
    • Another CommonName item from entry
  • Common Name
    • CommonName item from entry
    • Another CommonName item from entry

How can I make this change to match my hierarchy?

XAML:

<UserControl.Resources>
        <HierarchicalDataTemplate  DataType="{x:Type my:herbEntry}">
            <TreeViewItem Header="Common Name"  ItemsSource="{Binding commonName}">

            </TreeViewItem>
        </HierarchicalDataTemplate>
    </UserControl.Resources>
    <Grid>
        <TreeView HorizontalAlignment="Stretch" Name="TreeView1" VerticalAlignment="Stretch">
            <TreeViewItem Header="Herbs" ItemsSource="{Binding herbs.Values}"/>
        </TreeView>
    </Grid>

Answer 1

This example may guide you to assign different item templates at different levels for each type of bound item …

Having HierarchicalDataTemplates in a TreeView