'Declaration
 
Public Overloads Function Add( _
   ByVal startingRowId As Integer, _
   ByVal startingColumnId As Integer, _
   ByVal endingRowId As Integer, _
   ByVal endingColumnId As Integer, _
   Optional ByVal isCenter As Boolean, _
   Optional ByVal isMergeAcross As Boolean _
) As CellRange

'Usage
 
Dim instance As MergedCellCollection
Dim startingRowId As Integer
Dim startingColumnId As Integer
Dim endingRowId As Integer
Dim endingColumnId As Integer
Dim isCenter As Boolean
Dim isMergeAcross As Boolean
Dim value As CellRange
 
value = instance.Add(startingRowId, startingColumnId, endingRowId, endingColumnId, isCenter, isMergeAcross)

public CellRange Add( 
   int startingRowId,
   int startingColumnId,
   int endingRowId,
   int endingColumnId,
   bool isCenter,
   bool isMergeAcross
)

Parameters

startingRowId

The Id corresponding to the first Row of the CellRange that will be added to the MergedCellCollection.

startingColumnId

The Id corresponding to the leftmost Column of the CellRange that will be added to the MergedCellCollection.

endingRowId

The Id corresponding to the last Row of the CellRange that will be added to the MergedCellCollection.

endingColumnId

The Id corresponding to the rightmost Column of the CellRange that will be added to the MergedCellCollection.

isCenter

Centers the text horizontally & vertically. 

The default value is true.

isMergeAcross

Splits the merge per Row; for example, "A1 : B2" will be merged as "A1: B1" and "A2 : B2".

The default value is false.

Target Platforms: Windows 11, Windows 10, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

MergedCellCollection Class
MergedCellCollection Members
Overload List