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How to expand or collapse the group programmatically in WinForms Spreadsheet (SfSpreadsheet)?

Platform: WinForms |
Control: Spreadsheet |
Published Date: April 26, 2016 |
Last Revised Date: January 24, 2020
Tags: outline

Expand or collapse the group

The Spreadsheet allows you to expand or collapse the groups in a worksheet.

Collapse group:

Groups can be collapsed by using CollapseGroup method of IRange and then hide the columns of SpreadsheetGrid like below. 


//Collapse columns
Spreadsheet.ActiveGrid.ColumnWidths.SetHidden(3, 6, true);

Expand group:

Groups can be expanded by ExpandGroup method of IRange and then unhide the columns of SpreadsheetGrid like below. And also invalidate cells to refresh the view.


// Expand columns
Spreadsheet.ActiveGrid.ColumnWidths.SetHidden(3, 6, false);






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