Convert Eval object to DateTime and Format it in ItemTemplate of ASP.Net GridView

hi 

i use this code for show and converting date in my grid view

   <asp:TemplateField ItemStyle-Width = "100px"  HeaderText = "DATE" >
            <ItemTemplate >

               <%# System.Convert.ToDateTime(miladitoshamsi(Eval("Date")))
            </ItemTemplate>
        
        </asp:TemplateField>

here show my date and time from data base i learn in below threads how i can bind date from data base that just show date

http://www.aspforums.net/Threads/187904/Show-only-date-and-remove-the-time-part-in-BoundField-of-ASPNet-GridView/

with this code

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="Item" />
        <asp:TemplateField>
            <ItemTemplate>
                <asp:Label ID="Label1" runat="server" Text='<%# Eval("Date", "{0:dd/MM/yyyy}") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

now how i can mix these two code together that convert date from database and just show date?

Best regards