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Tree View

Hierarchical Data Structure

Use the following properties to bind the TreeView to hierarchical data:

  • items[]
    Assigns a local array as done in this demo.

  • dataSource
    Assigns a DataSource object that allows you to perform data shaping operations and use a remote source.

Each object in the TreeView's hierarchical data structure should include the following fields:

  • id
    Unique item identifier.

  • text
    Text displayed by the item.

  • items
    Nested objects (optional).

You can respectively use the keyExpr, displayExpr, and itemsExpr properties to specify custom names for the above-mentioned fields. Node objects can also include developer-defined fields and properties from this help section: items[].

In this demo, nodes use the expanded property, which specifies whether a node is collapsed or expanded. They also include the developer-defined price and image fields.

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