PreIntialize javascript error

[Pooja]

Hi,
I am getting following error in scheduler. 


Message: '0._preInitialized' is null or not an object
Line: 1144
Char: 1
Code: 0
URI: XXX/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ScriptManager1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bTelerik.Web.UI%2c+Version%3d2011.3.1115.40%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3acf16ab29-be3a-4761-9f9e-2c05ea68ff51%3a4c8be21a%3a650fdad%3aef9d9f4a%3aa51ee93e%3a59462f1%3a19620875%3a39040b5c%3af85f9819

This error is intermittent but frequent, I tried reproducing the error in a sample code, but the error is not reproducible there. Few things which might be helpful.
1. I am using the scheduler inside a usercontrol
2. This user control is loaded inside an updatepanel.
3. I am also using RadTooltipManager to show tooltips for appointment 
4. The user control has radajaxmanagerproxy which update the scheduler and tooltipmanager
5. This error usually comes when I try to navigate between views.

  The axd script which throws error is 

b.RadScheduler._preInitialize=function(p,o,m,k,l){var n=d("#"+p);
if(n[0]._preInitialized&&!$telerik.isIE){return;
}
Please let me know if this is a known issue or at least what this script is trying to do

[Shinu]

Hello Pooja,

Check the following forum thread which discussed similar scenario.
Java Error on Scheduler

-Shinu.

[Pooja]

I applied the registerscript solution, but it is still giving me the error.

 I don't think problem is with any missing javascript, problem is in the line
if(n[0]._preInitialized&&!$telerik.isIE){return;
} 

while debugging I got "n" as calendar control but n[0] was undefined. While navigating before going to sever, it is making this javascript call, any idea on this.

[Kalina]

Hi Pooja,

In fact, SharePoint has issues when the RadAjaxManager is declared at markup in a user control.

Let me suggest you overcome this by adding the RadAjaxManager at OnInit event of the web part.
Additionally please add the AjaxSettings in this manner:

private const string _ascxPath = @"~/_CONTROLTEMPLATES/SchedulerWebPartProject/SchedulerWebPart/VisualWebPart1UserControl.ascx";

protected override void CreateChildControls()
{
}

RadAjaxManager ajaxmgr;
protected override void OnInit(EventArgs e)
{

    base.OnInit(e);

    ajaxmgr = new RadAjaxManager();
    Page.Items.Add(typeof(RadAjaxManager), ajaxmgr);
    Page.Form.Controls.AddAt(0, ajaxmgr);

}

protected override void OnLoad(EventArgs e)
{
    base.OnLoad(e);

    Control control = Page.LoadControl(_ascxPath);
    Controls.Add(control);

    RadCalendar calendar = control.FindControl("RadCalendar1") as RadCalendar;
    RadScheduler scheduler = control.FindControl("RadScheduler1") as RadScheduler;

    ajaxmgr.AjaxSettings.AddAjaxSetting(calendar, scheduler);
}

The code above is quite simplified – one RadCalendar updates one  RadScheduler  - but I believe it illustrates the approach properly.
In case the issue persists - please provide us more details about your implementation.

Regards,
Kalina
the Telerik team

[Pooja]

Hi Kalina,

My issue is not related to sharepoint, it is more related to dynamically loading a user control(say scheduler control) in the page. This user control contains scheduler, first time when schedulercontrol is loaded scheduler is working fine, on some other event I am reloading the schedulercontrol, then when I navigate between views, I am getting that javascript error.

[Peter]

Hi,

Can you try to isolate the problem further by removing separately RadToolTipManager and RadAjaxProxy and test if the error is still reproducible?

Kind regards,
Peter
the Telerik team