Public Overrides Sub SetMergePolicy( _
   ByVal index As Integer, _
   ByVal value As MergePolicy _
) 

Dim instance As DefaultSheetAxisModel
Dim index As Integer
Dim value As MergePolicy
 
instance.SetMergePolicy(index, value)

public override void SetMergePolicy( 
   int index,
   MergePolicy value
)

FarPoint.Web.Spread.Model.ISheetAxisModel dsa;
dsa = FpSpread1.ActiveSheetView.ColumnAxisModel;
dsa.SetMergePolicy(1, FarPoint.Web.Spread.Model.MergePolicy.Always);
FpSpread1.ActiveSheetView.Cells[0, 1, 2, 1].Text = "Test";
Response.Write(dsa.GetMergePolicy(1)); 

Dim dsa As FarPoint.Web.Spread.Model.ISheetAxisModel
dsa = FpSpread1.ActiveSheetView.ColumnAxisModel
dsa.SetMergePolicy(1, FarPoint.Web.Spread.Model.MergePolicy.Always)
FpSpread1.ActiveSheetView.Cells(0, 1, 2, 1).Text = "Test"
Response.Write(dsa.GetMergePolicy(1))