Asp.net GroupBox 代码

 

<fieldset>
                        <legend>In UpdatePanel</legend>UpdatePanel content refreshed at
                        <%=DateTime.Now.ToString() %>
                        <asp:Button ID="Button1" Text="RefreshUpdatePanel" runat="server" />
                    </fieldset>

效果如下：

In UpdatePanel

UpdatePanel content refreshed at <%=DateTime.Now.ToString() %>