如何获得标识更新面板，最初的在JavaScript的请求 [英] How to get Id update panel that initial a request in javascript

问题描述

我想知道的标识更新面板，最初的要求在JavaScript中。我写这个剧本，但它返回未定义。

  VAR PRM = Sys.WebForms.PageRequestManager.getInstance（）;
prm.add_initializeRequest（InitializeRequest）;
prm.add_endRequest（EndRequest）;

功能InitializeRequest（发件人，参数）{
    警报（sender.ID）;
}
功能EndRequest（发件人，参数）{
}
 

发件人不为空，它返回 [对象] 但我怎样才能获得 ID ？

---

修改1）

我认为当的UpdatePanel 在里面母版不work.this是我的code：

 ＆LT;脚本类型=文/ JavaScript的＆GT;
    $（文件）。就绪（函数（）{
        变种PRM = Sys.WebForms.PageRequestManager.getInstance（）;
        prm.add_initializeRequest（InitializeRequest）;
        prm.add_endRequest（EndRequest）;


        功能InitializeRequest（发件人，参数）{
            变种UpdPanelsIds = args.get_updatePanelsToUpdate（）;
            警报（UpdPanelsIds [0]）;
        }
        功能EndRequest（发件人，参数）{
            如果（$（'。AlarmLogo'）。VAL（）==3）{
                警报（'尼玛'）;
            }
        }
    }）;


＆LT; / SCRIPT＆GT;
 

和

 ＆LT;形式=服务器＆GT;
＆LT; ASP：ScriptManager的ID =ScriptManager1=服务器＆GT;
＆LT; / ASP：ScriptManager的＆GT;
＆LT; ASP：定时器ID =计时器间隔=4000=服务器OnTick =timer_Tick/＆GT;
＆LT; ASP：UpdatePanel的ID =UpdatePanel1=服务器的UpdateMode =条件＆GT;
    ＆LT;的ContentTemplate＆GT;
        ＆LT; ASP：面板ID =pnlAlarm=服务器的CssClass =pnlAlarm的ClientIDMode =静态＆GT;
            ＆所述; A HREF =＃＆GT;
                ＆LT; D​​IV ID =报警＆GT;
                    ＆LT; ASP：文本框ID =lblContent=服务器文本=HHHEEELLLOOO的CssClass =AlarmLogo的ClientIDMode =静态＆GT;＆LT; / ASP：文本框＆GT;
                ＆LT; / DIV＆GT;
            ＆所述; / a取代;
        ＆LT; / ASP：面板＆gt;
    ＆LT; /的ContentTemplate＆GT;
    ＆LT;触发器＆GT;
        ＆LT; ASP：AsyncPostBackTrigger控件ID =计时器/＆GT;
    ＆LT; /触发器＆GT;
＆LT; / ASP：UpdatePanel的＆GT;
    ＆LT; D​​IV CLASS =主＆GT;
        ＆LT; ASP：的ContentPlaceHolder ID =日程地址搜索Maincontent=服务器/＆GT;
    ＆LT; / DIV＆GT;
＆LT; /形式GT;
 

和落后code：

 保护无效的Page_Load（对象发件人，EventArgs的）
{
    如果（！的IsPostBack）
    {
        会话[尼玛] = 1;
    }
}

保护无效timer_Tick（对象发件人，EventArgs的）
{
}
 

解决方案

您可以使用 get_updatePanelsToUpdate 返回数组与将要去的UpdatePanel的ID更新。

 ＆LT;脚本＆GT;
    在window.onload =功能（）{
        变种PRM = Sys.WebForms.PageRequestManager.getInstance（）;

        prm.add_initializeRequest（InitializeRequest）;
        prm.add_endRequest（EndRequest）;
    };

      功能InitializeRequest（发件人，参数）
      {
         //获取更新面板ID阵列
         变种UpdPanelsIds = args.get_updatePanelsToUpdate（）;
         //获取帖子ID
         。args.get_postBackElement（）ID;
      }

      功能EndRequest（发件人，参数）{
      }
＆LT; / SCRIPT＆GT;
 

http://msdn.microsoft.com/en-us/library/ ee224805.aspx

I want to know Id update panel that initial a request in JavaScript .I write this script but it return undefined.

var prm = Sys.WebForms.PageRequestManager.getInstance();
prm.add_initializeRequest(InitializeRequest);
prm.add_endRequest(EndRequest);

function InitializeRequest(sender, args) {
    alert(sender.ID);
}
function EndRequest(sender, args) {
}

sender is not null and it return [object] but How I can get ID?

---

Edit 1)

I think when UpdatePanel be inside MasterPage it does not work.this is my code:

<script type="text/javascript">
    $(document).ready(function () {
        var prm = Sys.WebForms.PageRequestManager.getInstance();
        prm.add_initializeRequest(InitializeRequest);
        prm.add_endRequest(EndRequest);


        function InitializeRequest(sender, args) {
            var UpdPanelsIds = args.get_updatePanelsToUpdate();
            alert(UpdPanelsIds[0]);
        }
        function EndRequest(sender, args) {
            if ($('.AlarmLogo').val() == "3") {
                alert('nima');
            }
        }
    });


</script>

and :

<form runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:Timer ID="timer" Interval="4000" runat="server" OnTick="timer_Tick" />
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
    <ContentTemplate>
        <asp:Panel ID="pnlAlarm" runat="server" CssClass="pnlAlarm" ClientIDMode="Static">
            <a href="#">
                <div id="Alarm">
                    <asp:TextBox ID="lblContent" runat="server" Text="HHHEEELLLOOO" CssClass="AlarmLogo" ClientIDMode="Static"></asp:TextBox>
                </div>
            </a>
        </asp:Panel>
    </ContentTemplate>
    <Triggers>
        <asp:AsyncPostBackTrigger ControlID="timer" />
    </Triggers>
</asp:UpdatePanel>
    <div class="main">
        <asp:ContentPlaceHolder ID="MainContent" runat="server" />
    </div>
</form>

and code behind:

protected void Page_Load(object sender, EventArgs e) 
{     
    if (!IsPostBack)     
    {         
        Session["nima"] = 1;    
    } 
} 

protected void timer_Tick(object sender, EventArgs e) 
{    
} 

解决方案

You can use the get_updatePanelsToUpdate that return an array with the Ids of the UpdatePanels that will be going to updated.

<script>
    window.onload = function() {
        var prm = Sys.WebForms.PageRequestManager.getInstance();

        prm.add_initializeRequest(InitializeRequest);
        prm.add_endRequest(EndRequest);
    };

      function InitializeRequest(sender, args) 
      {     
         // get the array of update panels id
         var UpdPanelsIds = args.get_updatePanelsToUpdate();
         // get the Post ID
         args.get_postBackElement().id;
      }

      function EndRequest(sender, args) {
      }
</script>

http://msdn.microsoft.com/en-us/library/ee224805.aspx

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