Sys.WebForms.PageRequestManager pageLoaded evento
Gerado depois de todo conteúdo da página é atualizado sistema autônomo resultado de um síncrono ou um postback assíncrono.
Sys.WebForms.PageRequestManager.getInstance().add_pageLoaded(pageLoadedHandler)
Sys.WebForms.PageRequestManager.getInstance().remove_pageLoaded(pageLoadedHandler)
Parâmetros
Termo |
Definição |
|---|---|
pageLoadedHandler |
O nome do método do manipulador será chamado. |
Comentários
The pageLoaded evento é disparado após todo conteúdo da página for atualizado, se ele foi atualizado causa de um postback síncrono (a página inteira) ou um postback assíncrono. Você pode usar esse evento para fornecer um efeito de transição personalizada para conteúdo atualizado.
Para obter mais informações sobre o PageRequestManager modelo de evento, consulte Trabalhando com eventos PageRequestManager.
Exemplo
O exemplo a seguir mostra como usar o pageLoaded evento e animar uma região da página que foi atualizada usando uma atualização de página parcial.
<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Protected Sub LinkButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
TextBox1.Text = DateTime.Now.ToString()
End Sub
</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>
<%@ 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>