I have a couple of pages on my site that dynamically add RadPanelItems to a RadPanelBar and apply header and content templates to them. I have recently noticed that when I navigate away from these pages when the site is debugging, I get a ScriptResource.asxd?d=LotsOfNumbersAnNdLetters..... error that reads like so...

Microsoft JScript runtime error: Sys.InvalidOperationException: Handler was not added through the Sys.UI.DomEvent.addHandler method.

I can only assume this has something to do with the Templates that get applied, but cant work out whats wrong as the pages work exactly as they're meant to and don't produce any server or client side errors until this one. Again, this error ONLY occurs when navigating away from the page, not on postback.

The templates do have event handlers added to controls that are built in the templates and think it might have something to do with these, but when I comment these handlers and methods out, I still get the same error...

It's very puzzling and I have to get it fixed but have run out of ideas.

Hi guys,

I am trying to upgrade my existing web project where I'm using the RadControls's 2007 Q2 RadAjaxManager to "Prometheus"'s RadAjaxManager.

I have followed instructions in documentation (Adding RadControls 'Prometheus' to an existing application), but I still receive this error when I open a page with "Prometheus" RadAjaxManager:

The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).

What could be wrong?

Regards,
Alex

I tried the http://www.telerik.com/help/aspnet-ajax/grid-hide-expand-collapse-images-when-no-records.html way of hiding the expand/collapse image but with no success. I don't use the HierarchyLoadMode = ServerBind way of populating the details table - but I don't have a problem populating the details table.

Here is the code for the detail table bind and my attempt to hide the collapse/expand column for parent rows with no detail items:


It seems like this should be an easy thing to do but I cannot find the answer. Thanks in advance for any help I get with this.

Dear Sir:
 I have a telerik gird and I would like to add tool tip in grid with add control during itemDataBound. it is ok for the static control in the grid template but if i try to dynamic  add control with tool tip manager during grid itemDataBound and the tool tip didn't show up.

will you have any sample which i can follow or any correction for my coding?

Thank you very much for your support!

From Edmond

Hello,
   We are currently using a RadComboBox with loadOnDemand within our MasterPage.   The SelectedValue of the ComboBox and the SelectedText are properly returned to the SelectedIndexChanged Event when a combobox item is selected from the drop down for the first time but not upon the second selection.  To be more clear.  If you have 3 ComboboxItems (in our case "projects")  : Item 1, Item 2 and Item3.  If Item 1 is selected the SelectedIndexChangedEvent works as expected.  Both the Text and Value of the event are populated in the event handler as expected, If Item 2 is selected the same expected behavior occurs.  If however a user were to RE select Item 1 after previously selecting Item 1 during the same session then ONLY the Text of the event handler is populated in the event value is not populated.  To make matters slightly more confusing the SelectedValue of the combo Box is also returning an empty string only on the reselection but appears to be working properly for the initial selection..  I have no idea why everything seems to be working fine for the first iteration of a selection but not the second.  Any advice would be sincerely appreciated.  Relevant Code Below:

C#

  protected void rcbCurrentProject_ItemsRequested(object sender, Telerik.Web.UI.RadComboBoxItemsRequestedEventArgs e)
        {
                     
            var projects = FluxPermissionManager.GetUserProjectAccess(Page.User.Identity.Name).Select(lkj => new { name = lkj.name, testProjectID = lkj.testProjectID });
            rcbCurrentProject.DataSource = projects.ToList();
            rcbCurrentProject.DataBind();

            e.Message = "Displaying All Accessible Projects";            
        }



    protected void rcbCurrentProject_SelectedIndexChanged(object sender, Telerik.Web.UI.RadComboBoxSelectedIndexChangedEventArgs e)
        {
            try
            {
        //e.Text Is populated Properly.... no issues
        string projectName = e.Text
        
        //e.Value returns an empty string following the second time selected.
                int val = Int32.Parse(e.Value);

        . . . ...
          }

       }


ASPX

    <telerik:RadComboBox ID="rcbCurrentProject" runat="server" ErrorMessage="None Selected" EnableLoadOnDemand="true"
                                ShowMoreResultsBox="false" AutoPostBack="true" EnableVirtualScrolling="false" OnPreRender="rcbCurrentProject_PreRender"
                                DataTextField="name" DataValueField="testProjectID" OnItemsRequested="rcbCurrentProject_ItemsRequested"  
                                MarkFirstMatch="true" Filter="Contains" AllowCustomText="false" OnSelectedIndexChanged="rcbCurrentProject_SelectedIndexChanged"
                                OnClientDropDownOpening="cleanProjectDefaultSelection">
                            </telerik:RadComboBox>


      function cleanProjectDefaultSelection(sender, args) {
            if (sender.get_text() != "") {
                sender.set_text("");
                sender._filterText = "";
                sender.requestItems("");
            }
        }

I’d like to have a fixed height radeditor which will limit content input after the boundary of the radeditor is reached. However, after setting the Height (500px), EnableResize(false), and AutoResizeHeight(false) parameters scrollbars continue to appear and the page still accepts input indefinitely.

Is there actually a way to limit the amount of input by fixing the height of a radeditor?

Hi,

I have tried to use your treelist with a template column for displaying a checkbox.

I get the result that the template column is displayed but now I don't know how to get the check event for the checkboxes.

I use the treelist as member of a usercontrol. There will be multiple instances of this usercontrol on the page.
The content of the treeview will be rebuilt completely on Page_Load of the usercontrol.

Don't know what's going wrong here. Hope you'll have a sample for fixing it.

Sincerely

René

I know I'd done this once before, but cannot find where, and can't seem to find the code online anywhere either.

I have a site with Telerik controls in it. There is one page with out any telerik controls on it, but I'd like to use some of the styles from RadGrid in this page. I know there was a way to get the URL to include a specific control/skin stylesheet in your page so you could use the styles without having that particular control on your page.

What was the method to get the url?

Thanks in advance!

I have two radajaxpanel, one panel has all the controls and another has the submit button, when ever a submit button is clicked both the panels are re-loaded, All my validation controls and validation summary is placed in first panel.
When ever I'm clicking the button the validation summary displays and then disappears immediately, which I dont want. After panel loads the validation summary should be displayed if any validation are failed.

Appreciate your immediate reply, as I'm stuck because of this stupid ajax problem

Hi,
  Can u suggest how to design the attached design using radgridview control.

  Is it possible to bind radgridview header from database.

Regards
Ravi