Adding to another row

I want to multiply my quantity row by price row and make a new column called total and print the total in there..how would i go about doing that
Dim DV2 As DataView = CType(SqlDataSource1.Select(DataSourceSelectArguments.Empty), DataView) If DV2.Count > 0 Then Dim i As Integer = 0 Do Until i = DV2.Count 'Create & fill Datarow Dim dr As DataRowView = DV2.Item(i) 'Create & fill Data Table Row Dim row As DataRow = t.NewRow() row("Inventory Code") = dr.Item(0).ToString row("Inventory Description") = dr.Item(1).ToString row("Price") = (CInt(dr.Item(2).ToString)).ToString("C") Dim DV3 As DataView = CType(SqlDataSource1.Select(DataSourceSelectArguments.Empty), DataView) If ...