 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head id="Head1" runat="server"> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<link href="/Style/NiuLan.css" rel="stylesheet" type="text/css" /> 
<title></title> 
<script type="text/javascript">//當(dāng)刷新的時(shí)候 原先的頁(yè)面的展示數(shù)據(jù)不會(huì)隱藏這里面是隱藏函數(shù) 
//取得PageRequestManager對(duì)象，每一個(gè)Asp.net Ajax頁(yè)面中會(huì)右唯一一個(gè)這種對(duì)象負(fù)責(zé)處理所有的Async - Postback要求 
var prm = Sys.WebForms.PageRequestManager.getInstance(); //新增事件處理至PageRequestManager的initializeRequest事件，當(dāng)Async-Postback發(fā)生時(shí)，此事件會(huì)被觸發(fā)，我們的InitRequest函數(shù)便會(huì)被運(yùn)行　　　　 
prm.add_initializeRequest(InitRequest); 
//新增事件處理至PageRequestManager的endRequest事件，當(dāng)Async-Postback完成時(shí)，此事件會(huì)被觸發(fā)，我們的EndRequest函數(shù)便會(huì)被運(yùn)行 　　 
prm.add_endRequest(EndRequest); function InitRequest(sender, args) { 
//顯示出UpdateProgress1控件 
document.getElementById('detail').style.display = "none"; 
} 
function EndRequest(sender, args) { 
//隱藏UpdateProgress1控件 
document.getElementById('detail').style.display = "block"; 
} 
//用于取消Async-Postback動(dòng)作 
function CancelClick() { 
//當(dāng)處于Async-Postback動(dòng)作時(shí)，get_isInAsyncPostBack函數(shù)會(huì)回傳true，此時(shí)調(diào)用abortPostBack 函數(shù)便會(huì)取消Async-Postback動(dòng)作。 
if (prm.get_isInAsyncPostBack()) { 
prm.abortPostBack(); 
} 
} 
</script> 
</head> 
<body > 
<form id="Form1" runat="server"> 
//使用  Ajax Extensitons 中的ScriptManager 
<asp:ScriptManager runat="server"> 
</asp:ScriptManager> 
//使用地方比如 
<asp:UpdatePanel ID="UpdatePanel1" runat="server"> 
<ContentTemplate> 
//放代碼 
<div id="detail"><asp:ImageButton ID="ibtnFBSJ" runat="server" ImageUrl="/images/ershoufang/bs/fbsj.gif" 
OnClick="ibtnFBSJ_Click" /> 
</div> 
//當(dāng)在靜態(tài)刷新頁(yè)面的時(shí)候會(huì)調(diào)用UpdateProgress 但是這個(gè)后臺(tái)也是需要代碼的看下面 
<asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="UpdatePanel1"> 
<ProgressTemplate> 
<div style="text-align: center"> 
<img alt="" src="/images/loading.gif" /> 
</div> 
</ProgressTemplate> 
</asp:UpdateProgress> 
</ContentTemplate> 
</asp:UpdatePanel> 
</form> 
</body> 
</html> 
后臺(tái) 
protected void ibtnFBSJ_Click(object sender, ImageClickEventArgs e) 
{ 
System.Threading.Thread.Sleep(2000); 
drpSortOrder.SelectedValue = ((int)ErShouFangJiChuZuFang.order.按發(fā)布時(shí)間排序).ToString(); 
PopulateDetails(); 
} 
//這樣就可以實(shí)現(xiàn)為靜態(tài)刷新頁(yè)面，帶加載過(guò)程中有旋轉(zhuǎn)圖片,用戶(hù)體驗(yàn)會(huì)很好效果如下 