[ASP.NET] DetailsView.HeaderTemplate

Hi,

I have a Detailsview header template as follows:

Code:

---

<HeaderTemplate>

        <%#Eval("Name") & " " & Eval("Surname")%>
    </HeaderTemplate>

---

I want to change the header template, when the admin is logged in to:

Code:

---

<HeaderTemplate>

        <%#Eval("Name") & " " & Eval("Surname") & " - " & Eval("PersonWhoInputData") %>
    </HeaderTemplate>

---

It has to be done programatically.

How to do that?

Thanks.