Occurs after new columns have been added to a worksheet.
The ColumnsInserted event's data class is ColumnsChangedEventArgs. The following properties provide information specific to this event:
|Count||Gets the number of columns inserted or removed.|
|StartIndex||Gets the index of the first column after which the columns are inserted or removed.|
This event does not occur by default. The event fires only if the WorkbookEventOptions.RaiseOnModificationsViaAPI property is true.