ColumnCollection.UnGroup Method

officefileapi-devexpress-dot-spreadsheet-dot-columncollection-dot-ungroup.md

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Name	Parameters	Description
UnGroup(Int32, Int32, Boolean)	first, last, unhideCollapsed	Ungroups the grouped columns on a worksheet.
UnGroup(String, String, Boolean)	firstColumnHeading, lastColumnHeading, unhideCollapsed	Ungroups the grouped columns on a worksheet.