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Getting Started with TreeDataGrid

TreeDataGrid combines tree navigation and tabular columns in a single control. In the v12-style API there are two supported ways to configure it:

• ItemsSource plus declarative TreeDataGrid*Column elements in XAML
• Source plus a FlatTreeDataGridSource<TModel> or HierarchicalTreeDataGridSource<TModel> built in code

Choose an Approach

• Use ItemsSource when you want the control definition to stay in XAML and you do not need advanced source-only features.
• Use Source when you need filtering, programmatic expand/collapse, or more involved runtime composition.

Useful Properties

• ItemsSource: binds a collection for declarative XAML columns
• Source: binds a FlatTreeDataGridSource<TModel> or HierarchicalTreeDataGridSource<TModel>
• SelectionMode: chooses row or cell selection, with optional multiple selection
• CanUserResizeColumns: controls column resizing, default false
• CanUserSortColumns: controls header-click sorting, default true

Recommended Path

1. Installation
2. Quickstart: Flat
3. Quickstart: Hierarchical
4. Breaking Changes v12
5. Column Types

Next

• If you are migrating older code, read Breaking Changes v12 before changing your view models.
• If you are starting from markup, continue with XAML Overview.
• If you need filtering or programmatic tree operations, continue with Filtering and Expand and Collapse.