We are getting an error when trying to use the Rad Rotator on one of the pages of our ASP.NET 4.0 application. The rotator will load some of the time, other times, we get this error -
Error: Sys.ArgumentException: Value must not be null for Controls and Behaviors.
Parameter name: element
Source File: http://localhost:9310/ScriptResource.axd?d=Og_O6TllbWaFOFwDL58zidgG5xexh_EpqE1FBp0IrVx1QMXVLRV_HIzBkd8GOTRutd37dLhAUd4mEXqoyCd_yuCwpZMeMn_t9LTLgFMckE9oWmUHtvPumKOdZcZC855DWCHXZw2&t=ffffffff8674b0ba
Line: 4621

I have removed the majority of the code inside of the Rotator to try and pin down this issue, but to no avail. Below is the rotator declaration:
<telerik:RadRotator ID="imgRotatorFeaturedPhoto" runat="server"
ClientIDMode="Static" ScrollDirection="Left"
RotatorType="AutomaticAdvance" Width="210" ItemWidth="210" Height="285" ItemHeight="285"
 FrameDuration="5000"  WrapFrames="false" ScrollDuration="500">
<ItemTemplate>
<div style="text-align:center;">
    <div style="background-color:#E6E7E8;padding-bottom:5px;height:150px;padding-top:5px;" runat="server" id="divImageHolder">
   
    <asp:Image runat="server" ID="imgImageItemFP" ClientIDMode="AutoID" CssClass="hoverImage" />
    </div>
    <div style="border-top:1px solid White;background-color:Black;color:White;height:118px;text-align:left;padding-top:5px;">
     <div class="defaultTextColor bold">
            <strong><asp:Label runat="server" ID="lblTitle"></asp:Label></strong>&nbsp;
            <asp:Label ID="lblDate" runat="server"></asp:Label>
            </div>                
        <div class="details">
            <asp:Label ID="lblRetailer" runat="server" style="color:White;"></asp:Label>
            </div>
        <div class="details">
            <asp:Label ID="lblBanner" runat="server" style="color:White;"></asp:Label>
            </div>
            <div class="details">
             <strong>Location:</strong>&nbsp;<asp:Label ID="lblLocation" runat="server"></asp:Label>
            </div>
            <div style="padding-top:5px;">
    <asp:HyperLink runat="server" ID="hlGoToMediaGallery" NavigateUrl="/MediaGallery/MediaGalleryHome.aspx" CssClass="BackgroundBlue" Text="GO TO MEDIA GALLERY"></asp:HyperLink>    
</div>
    </div>
</div>
</ItemTemplate>
</telerik:RadRotator>


During the page load, we bind a list of Images to the rotator, and inside of the ItemDataBound event, we set up the links, and all of the Labels, etc.

It appears to not even get to this point, and all we see is a blank white box where the rotator is supposed to go. I have done some research, and some people seem to think that this is a bug inside of the Microsoft AJAX Control toolkit, which we are using in other parts of the page.

Thanks

Eric

Hi,

I have a menu that is being populated via a web service. It is functioning correctly right now, however, a couple levels deep in the nesting has the items display off the screen. We need to implement a max height on the boxes to prevent this. How would we do this with the control? I have tried using the Group Settings height, however cannot get the desired behavior.

Thanks,
Steve

Hi everyone,

I have a load on demand radmenu, but i don´t know how to set the height for the group dinamicaly, i would like to set the same height example 200px if the height is great than 200px.

I put the code i use,

Thanks in advance,

Jolynice



default2.aspx



MenuWcfService.svc

Hi,

I have an issue with the Telerik grid. My grid comes up with 3 visible columns so no horizontal scrollbar is shown. One of the columns is frozen. I resize one of the columns and increase the width until the horizontal scrollbar apears. When I use the horizontal scollbar now, the frozen column also scrolls away with the rest of the columns. Is this a bug in the Grid?

Thanks for your time!

Hi
Button Enabled property is not working when used with radajaxpanel.
I kept the button outside the radajaxpanel.In page load i am able to Enable it .
But i am handling checkbox check changed event .This check box is a  radgrid column and the radgrid id inside radajaxpanel.Inside this event i am not able to enable/disable the button .
When i remove the ajax panel it is working .
Could anybody please let me know a solution for this.

Thanks..

Hi,

I have a radGrid and in that there are multiple radNumeric textboxes. Please see attached image.
The issue is of focusing next textbox.
After selecting value in first textbox, I need to press tab key 3 times to focus the next textbox. It should be focused by just clicking one tab key. I know the reason that it renders two other hidden fields for numeric textboxes. But I need to disable the other two to focus the next one on just a single tab key press.


What is the solution for this issue?

I have one template column which has an image. But the image doesnt get exported, and I ALREADY TRIED the ExportOnlyData= false and it still doesnt work

Error:  Sys.WebForms.PageRequestManagerParserErrorException:

I have a page which I want to be able to do 2 things, but so far I get the error above when I try to enable both of them. 

First I have my sliding pane which works just fine and all is good.  Inside the pane is a control with a button.  This button works fine as well (and it works on other pages too).  The problem is when I add code to have the sliding pane open through code (posted below) I get the error mentioned above and it will not work.  How can I fix this?  come more details about my setup.

Code to open pane:

 

 

 

Code for Ajax Manager - this is the code which A) makes the pane correctly slide out when a specified item is selected and B) causes the error being thrown when the button is clicked.
PManagerSummary1 is the user control which has the button to be clicked and is the control in the sliding pane which slides out.

I have a calendar control in the panel in the page. If the panel is visible, I show it and make it disabled on situation and enable it back. If the panel is not visible, obviously control is not loaded yet but when make panel visible and enable the calender it doesn't show the calender icon instead shows "Open the calender" message on the right with textbox. It looks like control is not loading properly by making it panel visible in the run time. 

Please let me know is there a way to fix it.

This question is once again related to the page I created and discussed here.

I noticed that if the page is inactive for a period of time, say, 10-15 minutes. and then I mouse over on the grid column to display tool tip, I get exception. 

Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

Exception occurs when I try to add control for tooltip using statement

e.UpdatePanel.ContentTemplateContainer.Controls.Add(ctrl)

Here is the Stack trace.


Note that I have about 10 columns in the grid, and about 8 columns are displaying tooltip. Each tooltip has different data but almost same structure of the controls to be added into tooltip. (They all use Table object which contains a RadGrid and some other controls maybe). 

   I noticed that this error occures on one or two columns, but not on all columns. If I try to display tooltip on other columns and then try back on the specific columns where it had above errors, it display them fine. I am not sure why?

   Do you think I can solve this issue by disabling ViewState on the page (or on some specific control)? Or if there is any other idea, please share.


   Thanks,
   Sameers