Data Binding of TreeView. Use HierarchicalDataTemplate to bind the hierarchy.

HierarchicalDataTemplate is used to bind treeView data. The advantage is that no matter how many layers there are, it is easier to bind them automatically.

Key code:

    <UserControl.Resources>
        <Common:HierarchicalDataTemplate x:Key="TreeNode" ItemsSource="{Binding Path=TreeNodes}">
            <TextBlock FontWeight="Bold" Text="{Binding Path=Text}" MouseLeftButtonUp="TextBlock_MouseLeftButtonUp"/>
        </Common:HierarchicalDataTemplate>

    </UserControl.Resources>
    <Grid x:Name="LayoutRoot" Background="White">
        <sdk:TreeView x:Name="tree123"  ItemsSource="{Binding Path=TreeNodes}"  ItemTemplate="{StaticResource TreeNode}">
        </sdk:TreeView>
    </Grid>

 

Namespace Tree
{
Public partial class MainPage: UserControl
{
Public MainPage ()
{
InitializeComponent ();
Tree tree = new Tree ();
Tree. TreeNodes = new List <TreeNode> ();
For (int I = 0; I <5; I ++)
{
TreeNode child = new TreeNode ();
Child. Id = I;
Child. Text = "root" + I. ToString ();
Child. TreeNodes = new List <TreeNode> ();
For (int j = 0; j <I; j ++)
{
TreeNode sub = new TreeNode ();
Sub. Id = j;
Sub. Text = "sub" + j. ToString ();
Sub. TreeNodes = new List <TreeNode> ();

Child. TreeNodes. Add (sub );
For (int x = 0; x <50; x ++)
{
TreeNode subSub = new TreeNode ();
SubSub. Id = x;
SubSub. Text = "subSub" + x. ToString ();
Sub. TreeNodes. Add (subSub );
}
}
Tree. TreeNodes. Add (child );

} Tree123.DataContext = tree;
}

Private void TextBlock_MouseLeftButtonUp (object sender, MouseButtonEventArgs e)
{
TreeNode treenode = this. tree123.SelectedItem as TreeNode;
MessageBox. Show (treenode. Text );
}

}
}
Appendix: source code