Script registration labyrinth – startup scripts and $find (asynchronous postback)
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<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="AsynchronousPostback.aspx.cs" Inherits="ScriptRegistrationLabyrinth.AsynchronousPostback" %> | |
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> | |
<html xmlns="http://www.w3.org/1999/xhtml"> | |
<head runat="server"> | |
<title></title> | |
</head> | |
<body> | |
<form id="form1" runat="server"> | |
<div> | |
<asp:ScriptManager runat="server" ID="ScriptManager1"> | |
</asp:ScriptManager> | |
<asp:UpdatePanel runat="server" ID="UpdatePanel1"> | |
<ContentTemplate> | |
<asp:Timer runat="server" ID="BretonTimer" OnTick="BretonTimer_Tick" Interval="2000" /> | |
<asp:Label runat="server" ID="Label1" /><br /> | |
<asp:Button runat="server" ID="StopBretonButton" Text="Stop!" OnClick="StopBretonButton_Click" /> | |
<asp:Button runat="server" ID="JustAnotherPostbackButton" Text="Just another postback" /> | |
</ContentTemplate> | |
<Triggers> | |
<asp:AsyncPostBackTrigger ControlID="BretonTimer" /> | |
<asp:AsyncPostBackTrigger ControlID="StopBretonButton" /> | |
</Triggers> | |
</asp:UpdatePanel> | |
</div> | |
</form> | |
</body> | |
</html> |
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using System; | |
using System.Collections.Generic; | |
using System.Linq; | |
using System.Web; | |
using System.Web.UI; | |
using System.Web.UI.WebControls; | |
namespace ScriptRegistrationLabyrinth | |
{ | |
public partial class AsynchronousPostback : System.Web.UI.Page | |
{ | |
protected void BretonTimer_Tick(object sender, EventArgs e) | |
{ | |
Label1.Text += "*"; | |
} | |
protected void StopBretonButton_Click(object sender, EventArgs e) | |
{ | |
string script = string.Format( | |
"(function() {{" + | |
"var fn = function() {{" + | |
"$find(\"{0}\")._stopTimer();" + | |
"Sys.Application.remove_load(fn);" + | |
"}};" + | |
"Sys.Application.add_load(fn);" + | |
"}})();", BretonTimer.ClientID); | |
ScriptManager.RegisterStartupScript(this, this.GetType(), "key1", script, true); | |
} | |
} | |
} |
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