Sub RemoveRows( _
   ByVal row As Integer, _
   ByVal rowCount As Integer _
) 

Dim instance As IRangeSupport
Dim row As Integer
Dim rowCount As Integer
 
instance.RemoveRows(row, rowCount)

void RemoveRows( 
   int row,
   int rowCount
)

private void Button1Click(object sender, System.EventArgs e)
{
    FarPoint.Web.Spread.Model.IRangeSupport irs;
    irs = (FarPoint.Web.Spread.Model.IRangeSupport)FpSpread1.ActiveSheetView.DataModel;
    irs.RemoveColumns(1, 3); 
    irs.RemoveRows(1, 3);
}

Private Sub Button1Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim irs As FarPoint.Web.Spread.Model.IRangeSupport
    irs = FpSpread1.ActiveSheetView.DataModel
    irs.RemoveColumns(1, 3) 
    irs.RemoveRows(1, 3)
End Sub