To all,
I'm trying to use ajax in my web site project but everytime I hit the button
on my webform the whole page posts back. The label control that I have in my
update panel does what it is suppose to do without effecting any other
controls outside the panel. Can you guys provide any insight? Please keep
in mind that I'm trying to update an existing website and did not start a
whole new project by using the template called, "ASP.NET AJAX-Enabled Web
Site".
I did create a site using an AJAX enabled web site template and found no
issues with using the same code below. I also tried comparing the
differences of my webform (using the same code below) in my existing web site
project and could not determine difference in code....other than that my
webform in my website project is posting the whole page back.
Here is the codes that I'm using:
HTML:
<%@ Page Language="VB" AutoEventWireup ="false"
CodeFile="Testi ngAJAX.aspx.vb" Inherits="Testi ngAJAX" %>
<%@ Register Assembly="Syste m.Web.Extension s, Version=1.0.610 25.0,
Culture=neutral , PublicKeyToken= 31bf3856ad364e3 5"
Namespace="Syst em.Web.UI" TagPrefix="asp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitl ed Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptMana ger ID="ScriptManag er1" runat="server">
</asp:ScriptManag er>
</div>
<br />
<asp:Label ID="Label1" runat="server" Text="Label"
Width="168px"></asp:Label><br />
<br />
<br />
<br />
<br />
<asp:Button ID="Button1" runat="server" Text="Button" /><br />
<asp:UpdatePane l ID="UpdatePanel 1" runat="server">
<ContentTemplat e>
<asp:Label ID="Label2" runat="server" Text="Label"
Width="168px"></asp:Label>
</ContentTemplate >
<triggers>
<asp:AsyncPostB ackTrigger ControlID = "button1"
eventname="clic k" />
</triggers>
</asp:UpdatePanel >
</form>
</body>
</html>
CODE BEHIND:
Partial Class TestingAJAX
Inherits System.Web.UI.P age
Protected Sub Page_Load(ByVal sender As Object, ByVal e As
System.EventArg s) Handles Me.Load
If Not IsPostBack Then
Label1.Text = Date.Now
End If
End Sub
Protected Sub Button1_Click(B yVal sender As Object, ByVal e As
System.EventArg s) Handles Button1.Click
Label2.Text = Date.Now
End Sub
End Class
