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Sys.WebForms.PageRequestManager pageLoaded Event

Raised after all content on the page is refreshed as a result of either a synchronous or an asynchronous postback.

Sys.WebForms.PageRequestManager.getInstance().add_pageLoaded(pageLoadedHandler)
Sys.WebForms.PageRequestManager.getInstance().remove_pageLoaded(pageLoadedHandler)

Term

Definition

pageLoadedHandler

The name of the handler method that will be called.

The pageLoaded event is raised after all content on the page is refreshed, whether it was refreshed because of a synchronous (full-page) postback or an asynchronous postback. You can use this event to provide a custom transition effect for updated content.

For more information about the PageRequestManager event model, see Working with Partial-Page Rendering Events.

The following example shows how to use the pageLoaded event and animate a region of the page that was updated by using a partial-page update.



<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
    protected void LinkButton_Click(object sender, EventArgs e)
    {
        TextBox1.Text = DateTime.Now.ToString();
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>PageRequestManager pageLoaded Event Example</title>
    <style type="text/css">
        body {
            font-family: Tahoma;
        }
        .FieldSetStyle
        {
            width: 300px;
            height: 100px;
        }
        .UpdatePanelContainer
        {
            width: 330px;
            height:110px;
        }

    </style>
</head>
<body>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server" />

        <script type="text/javascript">
        Type.registerNamespace("ScriptLibrary");
        ScriptLibrary.BorderAnimation = function(color, duration) {
            this._color = color;
            this._duration = duration;
        }
        ScriptLibrary.BorderAnimation.prototype = {
            animatePanel: function(panelElement) {
                var s = panelElement.style;
                s.borderWidth = '1px';
                s.borderColor = this._color;
                s.borderStyle = 'solid';
                window.setTimeout(
                    function() {{ s.borderWidth = 0; }},
                    this._duration
                );
            }
        }
        ScriptLibrary.BorderAnimation.registerClass('ScriptLibrary.BorderAnimation', null);

        var panelUpdatedAnimation = new ScriptLibrary.BorderAnimation('blue', 1000);
        var postbackElement;
        Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(beginRequest);
        Sys.WebForms.PageRequestManager.getInstance().add_pageLoaded(pageLoaded);

        function beginRequest(sender, args) {
            postbackElement = args.get_postBackElement();
        }
        function pageLoaded(sender, args) {
            var updatedPanels = args.get_panelsUpdated();
            if (typeof(postbackElement) === "undefined") {
                return;
            } 
            else if (postbackElement.id.toLowerCase().indexOf('external') > -1) {
                for (i=0; i < updatedPanels.length; i++) {            
                    panelUpdatedAnimation.animatePanel(updatedPanels[i]);
                }
            }

        }
        </script>

        <p>
            <asp:LinkButton ID="ExternalButton" runat="server" OnClick="LinkButton_Click">
            Update the panel with animation.
            </asp:LinkButton>
        </p>
        <hr />
        <div class="UpdatePanelContainer">
            <asp:UpdatePanel runat="server" ID="UpdatePanel1" UpdateMode="Conditional">
                <Triggers>
                    <asp:AsyncPostBackTrigger ControlID="ExternalButton" />
                </Triggers>
                <ContentTemplate>
                    <fieldset id="FieldSet1" class="FieldSetStyle" runat="server">
                        <legend>UpdatePanel</legend>
                        <asp:TextBox runat="server" ID="TextBox1" />
                        <br />
                        <asp:LinkButton ID="InternalButton" runat="server" OnClick="LinkButton_Click">
                        Update the panel with no animation.
                        </asp:LinkButton>
                    </fieldset>
                </ContentTemplate>
            </asp:UpdatePanel>
        </div>
    </form>
</body>
</html>


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