Question

如何检测ASP.Net异步PostBack及其设置，如控件和UpdatePanel导致PostBack和使用JavaScript中的PageRequestManager事件，这里是我正在做的一个例子：

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="up1" runat="server">
    <ContentTemplate>
        <asp:Button ID="Button1" runat="server" Text="Button" />
    </ContentTemplate>
    <Triggers>
    <asp:AsyncPostBackTrigger ControlID = "Button1" EventName = "Click" />
    </Triggers>
</asp:UpdatePanel>
</form>

////////////// //一些javascript代码 /////////////

</body>
</html>

我想要的是使用java脚本来检测此帖子

Answer 1

var prm = Sys.WebForms.PageRequestManager.getInstance();
if (prm != null) {
    prm.add_beginRequest(function (sender, e) {
        //Event raised when the Async Postback is started.

        //Detect whether the request is Async
        var isAsync = sender._postBackSettings.async;

        //Detect Id of the control that caused the postback.
        var controlId = sender._postBackSettings.sourceElement.id;

        //Id of the updatepanel that caused the postback
        var updatePanelId = sender._postBackSettings.panelID.split('|')[0];
    });
}
prm.add_endRequest(function (sender, e) {
    if (sender._postBackSettings.panelsToUpdate != null) {
        //Event Raised when the Async Postback is completed.
    }
});

把这个并告诉我结果:)你知道同一篇文章在这个链接中发布了相同的代码： http://www.aspsnippets.com/

如果你不明白要求解释：）

使用JavaScript中的PageRequestManager事件检测ASP.Net异步PostBack

1 个答案: