PRM–pageLoading事件

PRM–pageLoading事件
•参数类型：PageLoadingEventArgs
–dataItems属性：获得服务器端注册的数据项
–panelsDeleting属性：获得即将删除的UpdatePanel
–panelsUpdating属性：获得即将更新的UpdatePanel
•常用操作
–提示更新的UpdatePanel
–（能够）获得服务器端注册的数据项

提示更新的UpdatePanel
aspx

<% @ Page Language = " C# "  MasterPageFile = " ~/Site.master "  AutoEventWireup = " true "  CodeFile = " 3_HighlightRefreshedPanels.aspx.cs "  Inherits = " _3_HighlightRefreshedPanels "  Title = " HighlightRefreshedPanels "   %>

<% @ Register Src = " RandomRefreshControl.ascx "  TagName = " RandomRefreshControl "  TagPrefix = " uc1 "   %>
< asp:Content ID = " Content1 "  ContentPlaceHolderID = " ContentPlaceHolder1 "  Runat = " Server " >

< uc1:RandomRefreshControl id = " RandomRefreshControl1 "  runat = " server "   />
< br  />
< uc1:RandomRefreshControl id = " RandomRefreshControl2 "  runat = " server "   />
< br  />
< uc1:RandomRefreshControl id = " RandomRefreshControl3 "  runat = " server "   />
< br  />
< uc1:RandomRefreshControl id = " RandomRefreshControl4 "  runat = " server "   />
< br  />
< uc1:RandomRefreshControl id = " RandomRefreshControl5 "  runat = " server "   />
< br  />

< asp:Button ID = " Button1 "  runat = " server "  Text = " Button "   />

< script language = " javascript "  type = " text/javascript " >
    function highlightPanels(panels, clear)
    {
         for  (var i  =   0 ; i  <  panels.length; i ++ )
        {
            var panel  =  panels[i];
            panel.style.border  =  clear  ?   " solid 0px white "  :  " solid 2px red " ;
            panel.style.backgroundColor  =  clear  ?   " white "  :  " #d6dde8 " ;
        }
    }
    
    Sys.WebForms.PageRequestManager.getInstance().add_pageLoading(
        function(sender, e)
        {
            var panelsUpdating  =  Array.clone(e.get_panelsUpdating());
            highlightPanels(panelsUpdating);
            
            window.setTimeout(
                function(){ highlightPanels(panelsUpdating,  true ); },
                 2000 );
        });
</ script >

</ asp:Content >

cs

     protected   void  Page_Load( object  sender, EventArgs e)
    {
        ScriptManager.GetCurrent( this ).RegisterAsyncPostBackControl( this .Button1);
    }