<asp:TemplateField HeaderText="data chiusura">
                <InsertItemTemplate></InsertItemTemplate>
                <EditItemTemplate>
                    <asp:Calendar ID="Calendar2" runat="server">
                    </asp:Calendar>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label2" runat="server" Text='<%#bind("data_fine")%>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>