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null is null, ids is null - FF

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Ajax

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acm2001 asked on 25 Jan 2009, 10:37 AM

I have been reading all the posts about this topic on the forums but cant find an answer.
I have the latest version of asp.net and latest version of telerik controls.

I am using a masterpage with a default page on top which then references one of 3 customcontrol pages depending on the tab selected. This is from the demo code on the Telerik site.

I am also utilising AJAX with the telerik radscriptmanager

In IE it seems to work fine, but in FF i get the following error:

ids is null

_applyUpdatePanelsRenderMode()(0)Telerik....a6cfd3594 (line 2083)

set_updatePanelsRenderMode()(0)Telerik....a6cfd3594 (line 2078)

Sys$Component$_setProperties(Object, Object ajaxSettings=[2] clientEvents=Object)Telerik....a6cfd3594 (line 6)

createCallback()(function(), Object ajaxSettings=[2] clientEvents=Object, null, null, span#ctl00_ContentPlaceHolder1_RadAjaxManager1)Telerik....a6cfd3594 (line 6)

(?)()()www.blog...japan.com (line 2067)

createCallback()(Object _disposableObjects=[1] _components=Object, Object)Telerik....a6cfd3594 (line 6)

createCallback()()Telerik....a6cfd3594 (line 6)

createCallback()()Telerik....a6cfd3594 (line 6)

for(var i=0;i<ids.length;i++){

You can see the error on the website at http://www.bloglinkjapan.com
when you first go to the site all the AJAX etc works, when you click on the link HOME it breaks in FF. It looks like the controls are not loading before the page is ready.

I have tried many of the suggestions in the forum topics but cant fix this.

Any help appreciated
Thanks
Alan

6 Answers, 1 is accepted

answered on 27 Jan 2009, 10:49 AM

I have further researched this and have reduced my original page down to a test page that contains the following:

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="test5.aspx.vb" Inherits="test5" Title="" %>

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>ABC</title>
</head>
<body>
<form id="form1" runat="server">
<telerik:RadScriptManager ID="radScriptManager1" runat="server" />

<asp:hyperlink runat="server" id="hll2" navigateurl="/test5.aspx" text ="get this page again" >
</asp:hyperlink>

   <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
        <AjaxSettings>
            <telerik:AjaxSetting AjaxControlID="RadGrid1">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="RadGrid1" />
                </UpdatedControls>
            </telerik:AjaxSetting>
        </AjaxSettings>
    </telerik:RadAjaxManager>

   <telerik:RadGrid ID="RadGrid1" PageSize="30" AutoGenerateColumns="true" runat="server" >
   </telerik:RadGrid>

</form>
</body>
</html>

The vb side code is:

Partial Class test5
    Inherits System.Web.UI.Page

    Protected Sub radgrid1_NeedDataSource(ByVal source As Object, ByVal e As Telerik.Web.UI.GridNeedDataSourceEventArgs) Handles RadGrid1.NeedDataSource
        Dim scope As IObjectScope = BlogLinkVB.ObjectScopeProvider1.GetNewObjectScope()
        Dim result As Object = From p In scope.Extent(Of BlogLinkVB.Blog)() Select p
        RadGrid1.DataSource = result
    End Sub

End Class

That is the only code I have used. no master pages or other things at all.

In IE when i click on the hyperlink to get to this page everything works fine, no errors.
In FF when i first come to this page it works ok, but when i click on the link to get the page again the error "ids is null" comes up. At the moment it is coming up about 3 clicks out of 10.

Here is the exact error message from FF:

ids is null

_applyUpdatePanelsRenderMode()(0)Telerik....ac6335cbd (line 2083)

set_updatePanelsRenderMode()(0)Telerik....ac6335cbd (line 2078)

Sys$Component$_setProperties(Object _element=span#RadAjaxManager1 _clientEvents=Object, Object ajaxSettings=[1] clientEvents=Object)Telerik....ac6335cbd (line 6)

createCallback()(function(), Object ajaxSettings=[1] clientEvents=Object, null, null, span#RadAjaxManager1)Telerik....ac6335cbd (line 6)

(?)()()Telerik....t9A%3D%3D (line 293)

createCallback()(Object _disposableObjects=[1] _components=Object, Object)Telerik....ac6335cbd (line 6)

createCallback()()Telerik....ac6335cbd (line 6)

for(var i=0;i<ids.length;i++){

Any thoughts?
Alan

answered on 28 Jan 2009, 10:40 AM

radcontrols-test.zip

Hello Alan,

We are not aware of such issue. For your convenience I am attaching sample application replicating the scenario from your last post.

Please find the attached project.

Kind regards,
Nikolay
the Telerik team

Check out Telerik Trainer, the state of the art learning tool for Telerik products.

answered on 28 Jan 2009, 12:00 PM

Thanks
I loaded your code onto my server and ran it.
Annoyingly the error would not show up on your sample page or my original page.

I changed your populating of the datagrid to using openaccess as follows:

Dim scope As IObjectScope = BlogLinkVB.ObjectScopeProvider1.GetNewObjectScope()
Dim result2 As Object = From p In scope.Extent(Of BlogLinkVB.Blog)() Select p
RadGrid1.DataSource = result2

Still the error would not come up.

I left it for 30 minutes and came back and got the error again on both your sample application and on my page using OpenAccess.
I could not get the error to come up with just a plain datagrid as in your sample.

When I did get the error to come up, it took me 10 clicks to get it to appear.

Could it be something to do with data not being loaded into the cache before the page is displayed?

The error is still prominent on my main application page where i have more data being loaded.

the issue is only in FF. I am using latest version of FF.

Thanks
Alan Margerison

Accepted