public class Test
public Shared Sub Main
Dim objExcel As New Excel.Application
objExcel.Visible = True
objExcel.Workbooks.Add()
objExcel.Range("A1").Select()
objExcel.ActiveCell.FormulaR1C1 = "75"
objExcel.Range("B1").Select()
objExcel.ActiveCell.FormulaR1C1 = "125"
objExcel.Range("C1").Select()
objExcel.ActiveCell.FormulaR1C1 = "255"
objExcel.Range("D1").Select()
objExcel.ActiveCell.FormulaR1C1 = "295"
objExcel.Range("A1:D1").Select()
objExcel.Range("E1").Activate()
objExcel.ActiveCell.FormulaR1C1 = "=SUM(RC[-4]:RC[-1])"
objExcel.Range("A1:E1").Select()
objExcel.Selection.Font.Bold = True
objExcel = Nothing
End Sub
End Class