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Updating label text without postback

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Ajax

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5 Answers, 1 is accepted

answered on 30 Oct 2008, 03:59 PM

Hi,

Thanks for reply and information. I've quickly looked at the example it gives but still unsure as to how I'd implement this.

I've used a timer for now to cause the event:

asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>Connections :<asp:Label ID="Connections" runat="server" Text="0"></asp:Label><br />
<asp:Timer ID="Timer1" runat="server" Interval="1000" ontick="Timer1_Tick"></asp:Timer></ContentTemplate>
</asp:UpdatePanel>

What I really want is when a user connects to a socket I have listening for connections, is to update the Connections.text. My timer code:

protected void Timer1_Tick(object sender, EventArgs e)
{
if (server != null)
{
this.Connections.Text = server.nClientConnections.ToString();
}
}

I'd like this event to be called when a user connects, how can this be done with the OnAjaxRequest event? I guess I need to replace the UpdatePanel with RadAjaxPanel?

Regards,
Steve

answered on 31 Oct 2008, 10:59 AM

Hi again,

I've now got this code:

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" onajaxrequest="RadAjaxManager1_AjaxRequest"></telerik:RadAjaxManager><asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>

And in my C# :

protected void RadAjaxManager1_AjaxRequest(object sender, AjaxRequestEventArgs e)
{
this.Label1.Text = "100";// server.nClientConnections.ToString();
}

I raise this event in my code when a user connect:

page.RadAjaxManager1.RaisePostBackEvent(

"server");

The event gets raised, but the Label1.text is not updated...
What am I doing wrong?

Regards,
Steve

answered on 03 Nov 2008, 07:18 AM

Hello steve,

Please try the following code to initiate AjaxRequest on PageLoad:

           <script type="text/javascript">
                    window.onload = function()
                    {
                        setTimeout( function(){
                            <%= RadAjaxManager1.ClientID %>.AjaxRequest("InitialPageLoad");
                        }, 100);
                    }
                </script>

Sincerely yours,
Maria Ilieva
the Telerik team

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