ASP.NET AJAX Networking and Web Services

Re: PageMethods is undefined. ???

Vince Xu - MSFT — Fri, 03 Jul 2009 11:09:09 GMT

Hi,

What's the error you encountered then? Client or server error.

1.Please define pagemethod in the current page (aspx or code behind), rather than defining in usercontrol or other page.

2.Set EnablePageMethod=true.

3. Define the PageMethod method as static method.(In C#, use "Static"; in VB.Net, use Shared)

4. Mark as web method

If it can find PageMethod and pop out programe error, it maybe your code is incorrect in page method. Please debug it.

Re: PageMethods is undefined. ???

Kusno — Thu, 02 Jul 2009 03:54:58 GMT

it's still not working

Re: PageMethods is undefined. ???

Vince Xu - MSFT — Wed, 01 Jul 2009 06:52:31 GMT

Hi,

PageMethod is a static method, please define your page method to Shared method in VB, besides defining enablePageMethods=true

Re: PageMethods is undefined. ???

gt1329a — Tue, 30 Jun 2009 18:30:27 GMT

Public Shared Function GetSum

Re: PageMethods is undefined. ???

Kusno — Tue, 30 Jun 2009 02:24:42 GMT

I have changed it, but the error is still same

Re: PageMethods is undefined. ???

qwe123kids — Mon, 29 Jun 2009 07:24:16 GMT

Hi,
Check the setting script manager Settings

<asp:ScriptManager
        EnablePageMethods="true"
        ID="MainSM"
        runat="server"
        ScriptMode="Release"
        LoadScriptsBeforeUI="true"
        >
    </asp:ScriptManager>

Or

http://blog.devarchive.net/2007/12/calling-page-methods-from-javascript.html

http://blog.devarchive.net/2008/01/calling-page-methods-from-javascript-by.html

Install Ajax Framework

PageMethods is undefined. ???

Kusno — Mon, 29 Jun 2009 07:01:09 GMT

I got this source code from internet.
This source purpose is to call ASP.Net function or method from JavaScript.

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default5.aspx.vb" Inherits="Default5" %>
<%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Namespace="System.Web.UI" TagPrefix="asp" %>

<!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 id="Head1" runat="server">
    <title>Developed by Awais Hafeez</title>
</head>
<body>
<script language="javascript" type="text/javascript">
    function CalcSum(Src)
    {
        if (document.getElementById("<%= txtFirstNo.ClientID %>").value != '' && document.getElementById("<%= txtSecNo.ClientID %>").value != '')
        {
            PageMethods.getSum(document.getElementById("<%= txtFirstNo.ClientID %>").value, document.getElementById("<%= txtSecNo.ClientID %>").value, FillSumBox);
        }
    }
    function FillSumBox(val)
    {
        document.getElementById("<%= txtSum.ClientID %>").value = val;
    }
</script>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true" EnablePageMethods="true">
        </asp:ScriptManager>
    <div> 
        <table align="center" bgcolor="#FFFFCC" width="50%">
            <tr>
                <td align="center" colspan="4">
                    <b>Calling Web Methods from Client-Side</b></td>
            </tr>
            <tr>
                <td align="right">
                    </td>
                <td width="5">
                    </td>
                <td>
                    </td>
                <td>
                   </td>
            </tr>
            <tr>
                <td align="right">
                    <asp:Label ID="Label1" runat="server" Text="First Number :"></asp:Label>
                </td>
                <td>
                 </td>
                <td>
                    <asp:TextBox ID="txtFirstNo" onchange="CalcSum(this)" runat="server" MaxLength="4"></asp:TextBox>
                </td>
                <td>
                    </td>
            </tr>
            <tr>
                <td align="right">
                    <asp:Label ID="Label2" runat="server" Text="Second Number :"></asp:Label>
                </td>
                <td>
             </td>
                <td>
                    <asp:TextBox ID="txtSecNo" onchange="CalcSum(this)" runat="server" MaxLength="4"></asp:TextBox>
                </td>
                <td>
                </td>
            </tr>
            <tr>
                <td align="right">
                    <asp:Label ID="Label3" runat="server" Text="Sum of Numbers :"></asp:Label>
                </td>
                <td>
                    </td>
                <td>
                    <asp:TextBox ID="txtSum" runat="server" ReadOnly="True"></asp:TextBox>
                </td>
                <td>
             </td>
            </tr>
        </table>    
    </div>
    </form>
</body>
</html>

Imports System.Web
Imports System.Web.UI 
Imports System.Web.Services

Partial Class Default5
    Inherits System.Web.UI.Page

    <System.Web.Services.WebMethod()> _
    Public Function GetSum(ByVal num1 As Integer, ByVal num2 As Integer)
        Return (num1 + num2)
    End Function
 
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

    End Sub
End Class

In JavaScript error listing, appeared like this : 'PageMethods is undefined.'

Thanks.