asp.net中的asp:RadioButtonList

   <asp:RadioButtonList runat="server" ID="RadioButtonList1"  RepeatDirection="Horizontal" RepeatLayout="Flow">
                            <asp:ListItem Value="普通" Selected="True">普通</asp:ListItem>
                            <asp:ListItem Value="高返">高返</asp:ListItem>
                            <asp:ListItem Value="特惠">特惠</asp:ListItem>
                        </asp:RadioButtonList>