<asp:TemplateField HeaderText="Start Date">
                                            <ItemTemplate>
                                                <asp:Label runat="server"  Text='<%# Eval("StartDate","{0:d}") %>'/>
                                            </ItemTemplate>
                                            <EditItemTemplate>
                                                <asp:Calendar ID="cStart" runat="server" SelectedDate='<%# Bind("StartDate") %>'  />
                                            </EditItemTemplate>
                                           
</asp:TemplateField>