EasyXLS

DataGroup.bas

Attribute VB_Name = "DataGroup"
Public DATAGROUP_GROUP_BY_ROWS As Long
Public DATAGROUP_GROUP_BY_COLUMNS As Long

Sub Initialize()
    DATAGROUP_GROUP_BY_ROWS = 0
    DATAGROUP_GROUP_BY_COLUMNS = 1
End Sub

EasyXLS Excel components:

.NET
Excel Library for VB6
full COM+ version to import, export or convert Excel files
Excel Writer for VB6
COM+ version to create and export Excel files
Excel Reader for VB6
COM+ version to read and import Excel files
Download EasyXLS™ Excel Component for VB6

File formats:

MS Excel 97 - 2003
MS Excel 2007 - 2019
MS Excel 2021
Office 365
XLSXXLSMXLSBXLS
XMLHTMLCSVTXT