RadAjaxManager - sys.webforms.pagerequestmanager is null

[yossi]

hello,
 how are you all?

i recently started to work with "Prometheus" Scheduler.

i placed on a page Scheduler and Calender.

whem i dont use RadAjaxManager its work fine,i mean selecting a date on the calendar do effect the scheduler - ofcourse  with postback.

when i add the RadAjaxManager to the page i keep getting this JS error :

sys.webforms.pagerequestmanager is null - what is this?

hope some one can help me.

thanks.

here is my form and code  behind :

<%

@ Page Language="C#" MasterPageFile="~/Basic.master" AutoEventWireup="true" CodeFile="prometheus.aspx.cs"

Inherits="prometheus" Title="Untitled Page" EnableEventValidation="false" %>

<%

@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>

<

asp:Content ID="Content1" ContentPlaceHolderID="PageTitle" runat="Server">

<title>Promotheus</title>

</

asp:Content>

<

asp:Content ID="Content2" ContentPlaceHolderID="TopHeader" runat="Server">

Promotheus

</

asp:Content>

<

asp:Content ID="Content3" ContentPlaceHolderID="PageInnerTitle" runat="Server">

Promotheus

</

asp:Content>

<

asp:Content ID="Content4" ContentPlaceHolderID="Content" runat="Server">

<asp:ScriptManager ID="ScriptManager" runat="server" />

<telerik:RadAjaxManager EnableAJAX=true ID="RadAjaxManager1" runat="server" OnAjaxSettingCreating="RadAjaxManager1_AjaxSettingCreating">

</telerik:RadAjaxManager>

<telerik:RadCalendar runat="server" ID="RadCalendar1" Skin="Office2007" AutoPostBack="true"

EnableMultiSelect="false" DayNameFormat="Shortest" UseRowHeadersAsSelectors="true"

OnSelectionChanged="RadCalendar1_SelectionChanged">

</telerik:RadCalendar>

<telerik:RadScheduler ShowViewTabs="false" runat="server" ID="RadScheduler1" Width="100%"

Height="565px" Skin="Office2007" DataKeyField="ID" DayEndTime="18:00:00" DayStartTime="08:00:00"

TimeZoneOffset="03:00:00" SelectedView="WeekView" WeekHeaderDateFormat="dd.MM"

OnAppointmentCreated="RadScheduler1_AppointmentCreated">

</telerik:RadScheduler>

</

asp:Content>


Code Behind :

protected

void Page_Load(object sender, EventArgs e)

{

RadAjaxManager1.AjaxSettings.AddAjaxSetting(RadCalendar1,RadScheduler1);

if (!IsPostBack)

{

//Machines.DataSource = bpss.BLL.Machine.GetAll();

RadCalendar1.SelectedDate = RadScheduler1.SelectedDate;

RadCalendar1.FocusedDate = RadScheduler1.SelectedDate;

LoadData();

}

}

private void LoadData()

{

machineID =

Utilities.ParseIntSafe(1);

if(machineID>0)

{

machine =

new bpss.BLL.Machine(1);

RadScheduler1.DataSource =

machine.GetTimeTableAndOrders(RadScheduler1.SelectedDate, RadScheduler1.SelectedDate.AddDays(7));

RadScheduler1.DataStartField =

"Start";

RadScheduler1.DataEndField =

"End";

RadScheduler1.DataSubjectField =

"Notes";

}

DataBind();

}

protected void RadCalendar1_SelectionChanged(object sender, Telerik.Web.UI.Calendar.SelectedDatesEventArgs e)

{

if (RadCalendar1.SelectedDates.Count > 0)

{

RadScheduler1.SelectedDate = RadCalendar1.SelectedDate;

}

}

 

protected void RadAjaxManager1_AjaxSettingCreating(object sender, AjaxSettingCreatingEventArgs e)

{

e.UpdatePanel.UpdateMode =

UpdatePanelUpdateMode.Always;

}

[Steve]

Hi yossi,

I have not been able to reproduce the problem with the code you provided. Please make sure that you have AjaxEnabledWebSite for your project and that you have MS AJAX installed on your machine. I am attaching the default web.config for ajax enabled web sites for your convenience.

Best wishes,
Steve
the Telerik team

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[yossi]

Hi Steve,

thanks for your answer.

actually the problem has been solved by changing the value of this line in the WEB.CONFIG file from :

<

xhtmlConformance mode="Legacy"/>

to :

<

xhtmlConformance mode="Transinional"/>

thanks,anyway.

another question please:

How do i configure the scheduler to place appointments for half an hour,
example : from 12:00 to 12:30.

the scheduler allow to work only with "complete hours".

thank you.

[Peter]

Hi yossi,

As for the scheduler question, please try this:

protected void RadScheduler1_AppointmentInsert(object sender, SchedulerCancelEventArgs e)
    {
        e.Appointment.End = e.Appointment.Start.Add(new TimeSpan(0, 30, 0));
    }

Greetings,
Peter
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center

[Russ]

Finally, after searching online for 10 hours and trying (what seemed like) everything, by adding xhtmlConformance mode="Transinional" to my web.config I was able to over come the infamous "sys.WebPage.PageRequest is null..." error.

I would sure be interested to hear from a Telerik guru on why this resolves the problem...as it only showed up when adding the RadAjaxManager to a page (and by not having the web.config element listed above).

Regards,
Russ

[Vlad]

Hi Russ,

Here is the explanation directly from Scott Guthrie:
http://weblogs.asp.net/scottgu/archive/2006/12/10/gotcha-don-t-use-xhtmlconformance-mode-legacy-with-asp-net-ajax.aspx

Kind regards,
Vlad
the Telerik team

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