How to move to the next row an so on in DataGridView?

[Big P]

Dim i As Integer
Dim s As Integer
For i = 0 To 16
s = s + DatagridView2(i, 0).Value

Next i

Dim sa As Integer
For ia = 0 To 16
sa = sa + DatagridView2(ia, 1).Value
Next ia


If s = 11 Then
DatagridView2(17, 0).Value = s
Else
DatagridView2(17, 0).Value = 0
End If

If sa = 11 Then
DatagridView2(17, 1).Value = sa
End If

Is there a way to do the same till row 100.
Without having to change this 100 times.
"Dim i As Integer
Dim s As Integer
For i = 0 To 16
s = s + DatagridView2(i, 0).Value"

Thanks in advance