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[CLOSED] "Ext is undefined" - error in simple javascript when calling DirectMethod

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  1. #1
    Apr 25, 2011, 6:56 PM

    [CLOSED] "Ext is undefined" - error in simple javascript when calling DirectMethod

    So I have my Default.aspx and trying to do some "keepalive" so that the session doesnt time out all the time.

    The page inherits a MasterPage and in the head I place this:
    <%@ Page Language="C#" MasterPageFile="SiteSecure.Master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplicationExtNetTest.Secure.Default" %>
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>

<asp:Content ID="asd" ContentPlaceHolderID="head" runat="server">
    <ext:XScript runat="server">
        <script type="text/javascript">
            var timerObj;

            function KeepAlive() {
                #{DirectMethods}.SendKeepAlive();
                timerObj = setTimeout("KeepAlive()", 1000 * 30);
            }

            KeepAlive();
        </script>
    </ext:XScript>
</asp:Content>
    The code-behind:

    [DirectMethod]
public void SendKeepAlive()
{
    DateTime start = DateTime.Now;
    KeepAlivePingWithReply asd = new KeepAlivePingWithReply();
    asd = (KeepAlivePingWithReply)SRef.main.SendRequest(asd);

    if (asd != null && asd.Success)
    {
        TimeSpan ts = DateTime.Now.Subtract(start);
        ToolbarTextItem2.Text = asd._ServerTime.ToLongTimeString() + " (" + ts.TotalMilliseconds + " ms)";
    }
    else
    {
        ToolbarTextItem2.Text = "No server reply";
        X.Msg.Alert("Error", "EPIC FAIL");
    }
}
    Easy enough. Problem is that I get the following error in the browser:

    Uncaught ReferenceError: Ext is not defined

    I have also tried this approach in calling DirectMethod:
               function KeepAlive() {
                Ext.net.DirectMethods.SendKeepAlive();
                timerObj = setTimeout("KeepAlive()", 1000 * 30);
            }
    But same error. Its weird, because I call DirectMethods from Javascript in other pages without problems. I cant see the error...
  2. #2
    Apr 25, 2011, 7:33 PM
    Hi,

    Do you have ResourceManager on the master page?
  3. #3
    Apr 25, 2011, 7:35 PM
    yes, the entire MasterPage is here:



    <%@ Master Language="C#" AutoEventWireup="true" CodeBehind="SiteSecure.master.cs" Inherits="WebApplicationExtNetTest.Secure.SiteSecure" %>
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<!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>test</title>
    <asp:ContentPlaceHolder ID="head" runat="server">
    </asp:ContentPlaceHolder>
</head>
<body>
    <form id="form1" runat="server">
    <ext:ResourceManager ID="ResourceManager1" runat="server" />

    <div>
        <asp:ContentPlaceHolder ID="MainContent" runat="server">
        </asp:ContentPlaceHolder>
    </div>
    </form>

   
</body>
</html>
  4. #4
    Apr 25, 2011, 7:41 PM
    Hi,

    Try this in master page head (i think that your script is executed before ExtJS resources loading)
    <head runat="server">
    <title>test</title>
    <ext:ResourcePlaceHolder runat="server" />
    <asp:ContentPlaceHolder ID="head" runat="server">
    </asp:ContentPlaceHolder>
</head>
  5. #5
    Apr 25, 2011, 7:46 PM
    Done, but that didnt help.

    Can you reproduce the error in this test page?


    <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplicationExtNetTest.Test.Default" %>
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>

<!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>
    <ext:XScript ID="XScript1" runat="server">
        <script type="text/javascript">
            var timerObj;

            function KeepAlive() {
                Ext.net.DirectMethods.SendKeepAlive();
                timerObj = setTimeout("KeepAlive()", 1000 * 30);
            }

            KeepAlive();
        </script>
    </ext:XScript>
</head>
<body>
    <form id="form1" runat="server">
    <ext:ResourceManager ID="ResourceManager1" runat="server" />
    <div>
    
    </div>
    </form>
</body>
</html>

    Code-behind:


    using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Ext.Net;

namespace WebApplicationExtNetTest.Test
{
    public partial class Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        [DirectMethod]
        public void SendKeepAlive()
        {
        }
    }
}
  6. #6
    Apr 25, 2011, 7:53 PM
    I have reproduced.

    Well, Ext scripts are not loaded at the moment of KeepAlive() executing.

    Please use Ext.onReady() or DocumentReady listener of ResourceManager.

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