Accesing datasource fields from inline code in a GridView.

[pradeep]

In the code below, how to access the 'FirstName' field value of the
datasource from with in the code segment (enclosed in <% %>)?

----------------------------------------
<asp:GridView ID="GridView1" DataSourceID="SqlDataSource1" runat="server">
<Columns>

<asp:BoundField DataField="FirstName" HeaderText="FirstName"/>

<asp:TemplateField>
<ItemTemplate>
<%

string firstName = /** do something here to access the 'firstName'
field value>; **/
%>
</ItemTemplate>

</asp:TemplateField>

</Columns>

</asp:GridView>