jquery - 当应用程序状态更改时，asp.net 刷新页面的一部分 whit jquery

Question

我使用应用程序属性来计算在线用户数：

Application["OnlineUsers"] = (int)Application["OnlineUsers"] + 1;  

然后将 Application 属性值绑定到 HTML 标记

<div id="OnlineUser" >
    <span>Number of Online Users is <%=Application["OnlineUsers"].ToString() %></span> 
</div> 

例如，当user1访问页面，DIV标签显示Number of Online Users is 1和user2访问页面，DIV标签显示Number of Online Users is 2，但user1仍然Number of Online Users is 1

更改应用程序属性时如何刷新user1页面？user2

Answer 1

you can try with Ajax (Timer + Updatepanel)

    <form id="form1" runat="server">
      <asp:ScriptManager runat="server" id="ScriptManager1">
      </asp:ScriptManager>

      <asp:UpdatePanel runat="server" id="UpdatePanel1">
        <ContentTemplate>
          <asp:Timer runat="server" id="Timer1" Interval="10000" OnTick="Timer1_Tick"></asp:Timer>
          <asp:Label runat="server" Text="Page not refreshed yet." id="Label1">
          </asp:Label>
        </ContentTemplate>
     </asp:UpdatePanel>


<div id="test" runat="server" >
</div>


    protected void Timer1_Tick(object sender, EventArgs e)
        {
            test.Text = "Application["OnlineUsers"].ToString();
        }