How can i get subtotal of the sale price and qty by row and grand total.
<asp:GridView ID="Gvgridclient" runat="server" AutoGenerateColumns="False" ShowFooter="True">
<Columns>
<asp:BoundField DataField="itemcode" HeaderText="Itemcode" />
<asp:BoundField DataField="stockitem" HeaderText="Item Description" />
<asp:BoundField DataField="itemsize" HeaderText="itemsize" />
<asp:TemplateField HeaderText="Qty">
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("Qty") %>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="Fqty" runat="server" Width="46px"></asp:TextBox>
</FooterTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("Qty") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="saleprice" HeaderText="OrderPrice" />
<asp:BoundField DataField="saleprice" HeaderText="SalePrice" />
<asp:BoundField HeaderText="Subtotal" />
<asp:BoundField DataField="account" HeaderText="Admno" />
<asp:BoundField DataField="clientname" HeaderText="Names" />
<asp:BoundField DataField="Date" HeaderText="Date" />
<asp:TemplateField HeaderText="DelSingle">
<ItemTemplate>
<asp:LinkButton ID="lnkRemove" runat="server"
CommandArgument='<%# Eval("keyfield")%>' OnClick="DeleteCustomer"
OnClientClick="return confirm('Do you want to delete?')" Text="Delete"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
