Hello Jayson,

Yes, our Infragistics Excel engine supports hierarchical grouping of rows and columns with via outline levels. I attached a sample that exports a grid to excel and handles the

UltraGridExcelExporter1_RowExporting to manipulate the worksheet rows to specific outline levels. When the excel file is opened you will see the group area appear to the left of the rows with collapse/expand indicators.

Quote from your docs:

"Microsoft Excel supports hierarchical grouping of rows and columns with a maximum of seven levels of hierarchy. To create a group, set adjacent rows or columns to same outline level. When rows or columns are grouped, an outline indicator will provide a visual representation of the outline level. In addition, an outline group has an expansion indicator at one end of the group, which allows the user to easily hide and unhide all rows or column in the group with a single click."

        e.CurrentWorksheet.Rows(1).OutlineLevel = 1         e.CurrentWorksheet.Rows(2).OutlineLevel = 1

        e.CurrentWorksheet.Rows(3).OutlineLevel = 2         e.CurrentWorksheet.Rows(3).OutlineLevel = 2

        e.CurrentWorksheet.Rows(5).OutlineLevel = 3         e.CurrentWorksheet.Rows(6).OutlineLevel = 3  

Please see my sample attached for more details.