Ajax ASP.Net Tutorial


            <%@ Page Language="C#" %>
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

    protected void btnGetFortune_Click(object sender, EventArgs e)
    {
        System.Threading.Thread.Sleep(3000); // wait 3 seconds
        lblFortune.Text = String.Format("At {0:T}, the oracle says: ", DateTime.Now);
        Random rnd = new Random();
        switch (rnd.Next(4))
        {
            case 0:
                lblFortune.Text += "You're doomed!";
                break;
            case 1:
                lblFortune.Text += "Good luck is around the corner.";
                break;
            case 2:
                lblFortune.Text += "Don't leave home.";
                break;
            case 3:
                lblFortune.Text += "Buy stock today.";
                break;
        }
    }



    UpdatePanel Abort


    
    
        
        
        
                            id="btnGetFortune"
                Text="Get Fortune"
                OnClick="btnGetFortune_Click"
                Runat="server" />
                            id="btnCancel"
                Text="Cancel"
                Enabled="false"
                Runat="server" />
                
                
        
        
    

    
    
    var prm = Sys.WebForms.PageRequestManager.getInstance();
    prm.add_initializeRequest(prm_initializeRequest);
    function prm_initializeRequest(sender, args)
    {
        if (args.get_postBackElement().id == 'btnCancel')
        {
            prm.abortPostBack();
            alert("Fortune Aborted!");
        }
        else
        {
            $get('btnCancel').disabled = false;
        }
     }