Data Controls :: Gridview Row Span

I have gridview binding from data base which has column

type ingredients     no of ingredients

A        abc              2
B        cde              2
C        xyz               3
C       afg                3
C        zbc               3

I want to merge row of gridview based on no of ingredients result should be like ..

type ingredients     no of ingredients

A        abc             2
          cde              2

C        xyz               3
         afg               3
          zbc               3

I am using following on gridview row databound it works fine when no of ingredients has equal no else not giving expected result.. Here is aspx code

<asp:GridView ID="GridView2" runat="server" DataSourceID="SqlDataSource2" Width="100%" AutoGenerateColumns="False" OnRowDataBound="GridView2_RowDataBound">
<Columns>
<asp:BoundField DataField="TypeName" HeaderText="Type" SortExpression="TypeName" />
<asp:BoundField DataField="IngredientName" HeaderText="Ingredient" SortExpression="IngredientName" />

[code]...