Session["UserName"] = User.Identity.Name;
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:MYDataBaseConnectionStringConnectionString %>" SelectCommand="VIEW_MY_ORDER" SelectCommandType="StoredProcedure"> <SelectParameters> <asp:SessionParameter Name="CLIENT" SessionField="UserName" /> </SelectParameters> </asp:SqlDataSource>