Multiple Layout Definition: MultiRow allows you to set the LayoutDefinition property, which takes an object that describes the layout of the grid rows and cells. The LayoutDefinition property specifies the layout of the cells in the MultiRow control.
Fully Expanded Column Headers: MultiRow allows you to set the CollapsedHeaders property to true which then enables the grid to show a single row of column headers containing the group names. Setting it to false cause it to show a group of rows with the same layout as the data, and column names in the cells.
Collapsible Column Headers: MultiRow allows you to set the CollapsedHeaders property to true which then allows you to collapse the column headers to a single line, showing only the group names rather than individual cells. This saves space at the expense of having individual cell headers.
FlexGrid Features: MultiRow extends from the FlexGrid class. It is a full-featured grid just like the FlexGrid control, providing various features including several selection modes, sorting, filtering, row and column freezing, custom cells, data mapping and more.