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The MultiColumnComboBox supports binding to a grouped data source.

To group the data by using the custom DataSource configuration, define a datasource group expression. For more information, refer to the demo on grouping the data in the MultiColumnComboBox.

The data source sorts the grouped data either in ascending or descending order. To persist a specific group order, use the server grouping feature. To define the serverGrouping option, use the DataSource ServerGrouping method.

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