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TreeGrid mutliple selection can be achieved with help of checkbox in each row. To render checkbox in each treegrid row, you need to define column type as checkbox using columns->type property.

Selection can be persisted on all the operations using SelectionSettings-> PersistSelection property. For persisting selection on the TreeGrid, any one of the column should be defined as a primary key using columns->IsPrimaryKey property.

In this demo, Tree Grid mutliple selection has been enabled with selection persistance.

More information on the paging configuration can be found in this documentation section.

DEMO
SOURCE

The TreeGrid is used to represent the hierarchical data in a tabular format, combining the visual representation of Grid and TreeView controls. It represents the data from Datasource. Such as an array of JSON objects, OData web services, or DataManager binding data fields to columns or self-referential datasource.

In this demo, the TreeGrid is populated with its minimum default settings. More information on the TreeGrid instantiation can be found in this documentation section.