Hi all,

I'm basically trying to create something similar to the demo presented here:

https://demos.telerik.com/aspnet-ajax/multiselect/virtualization/defaultcs.aspx

I've got a web service as a data source, and everything works (and looks) great without virtualization. I would obviously like to reap the benefits of virtualization, since the multiselect could potentially need to pull in a lot of data.

The issue occurs when I'm trying to select an item:

Telerik.Web.UI.WebRe…1f%3a619d6d01:13732 Uncaught TypeError: Cannot read properties of null (reading 'toJSON')
    at init.select (Telerik.Web.UI.WebRe…3a619d6d01:13732:38)
    at init.trigger (Telerik.Web.UI.WebRe…%3a619d6d01:5322:14)
    at init._select (Telerik.Web.UI.WebRe…%3a619d6d01:13489:7)
    at init._click (Telerik.Web.UI.WebRe…%3a619d6d01:13247:3)
    at init.d (Telerik.Web.UI.WebRe…a619d6d01:2435:3873)
    at init.trigger (Telerik.Web.UI.WebRe…%3a619d6d01:5322:14)
    at init._clickHandler (Telerik.Web.UI.WebRe…3a619d6d01:12931:54)
    at HTMLLIElement.d (Telerik.Web.UI.WebRe…a619d6d01:2435:3873)
    at HTMLUListElement.dispatch (Telerik.Web.UI.WebRe…619d6d01:2436:12445)
    at r.handle (Telerik.Web.UI.WebRe…a619d6d01:2436:9174)

Also, if I try to hook onto the OnSelect client-side event, it seems that the data item is not populated - my function onSelect(sender, args) gets triggered, but args.get_dataItem() returns null. Is it possible some binding didn't go as planned? Is there an extra step that needs to be done when using virtualization, or does perhaps some additional data need to be returned from the web service?

My VirtualSettings look like this:

<VirtualSettings ItemHeight="25" MapValueTo="dataItem" ValueMapper="valueMapper" />

and the ValueMapper isn't to blame because it's not getting triggered; I'm doing a simple scenario where there are no initially selected values to display.

I've tried going through docs for both RadMultiSelect and the Kendo control it wraps, but to no avail. I was initially using a version released in 2022, but have tried just replacing it with 2023.3.1010 - it didn't seem to help. I've also tried explicitly adding the  Virtual="true" option to my RadMultiSelect instance, but that seemed to have no effect either.

Hi 

I have radgrid for an application that has the filters set to show.

When the page first loads and grid is populated the filter works successfully, however if I do anything like click on another button so the page reloads for example, the filters stop working. So when I click on the filter button the drop down of options does not show anymore.

Any advise on why its behaving like this please?

Thanks

Rakhee

Validator text shows as required, however the message on the validator doesn't show in the asp:ValidationSummary control.

Hi,

How to disable zooming?

Regards,

Omar

Sometimes i have unwanted suggestions in a grid on entry (like 11,122 in attached pic).

Is there a way to eliminate this?

When initializing a RadScheduler control on a mobile browser (examples are iOS Safari and Android Edge), the javascript plugins code crashes when trying to call `add_hiding` (assuming an event handler).

On the mobile browser, the issue isn't present when to toggle `View Desktop Site`.

From the error stack trace, the second line for `Plugin.js` points to:

Which looks like there's some handling to make context menus work on mobile device.

Any clues as to why `add_hiding` fails on mobile view?

I have added a RadMaskedTextBox to a form. My layout uses bootstrap. All of my other controls have the label at the top, but when I add the RadMaskedTextBox , the label goes to the left. This happens whether I use the asp label or the built in label for the control.

 <telerik:RadMaskedTextBox ID="rmtPhone" runat="server" RenderMode="Auto" Mask="+1 (###) ###-####"  Label="Phone"></telerik:RadMaskedTextBox>

Does anyone have a solution to move the label to the top?

Hello,

 I'm a beginner when it comes to working with diagrams.

 I'm wondering if there's a method to automatically rearrange the shapes in the diagram using server-side code. For instance, in the image I've shared, I used x and y coordinates to position the shapes on the diagram. Is there a way to have the shapes auto-arrange themselves as soon as I establish connections between them?

 Best regards,

Omar

Hi,

I would like to be able to change the RadioButtonList border color depending on certain conditions from JS.

Here I am looping through all the Rad radio controls and on certain conditions I would like to change the border style for the RadioButtonList.

  var allRadControls = $telerik.radControls;
            var Found = false;       
            for (var i = 0; i < allRadControls.length; i++) {
                var element = allRadControls[i];
                //text Radio
                if (Telerik.Web.UI.RadRadioButtonList && Telerik.Web.UI.RadRadioButtonList.isInstanceOfType(element)) {
                    var items = element.get_items();
                    var x = element.get_element().parentElement;
                  
                  //  alert(pageview.findControl(element).get_id());

                    if (element.get_toolTip() == 'y' &&
                        x.id == pageview.get_id() &&
                        element.get_selectedIndex() <= 0) {
                        element.style.color = 'white';
                        
                        return 'y'
                    }
                    else {
                        Found= 'n'
                    }
                 
                }
            }
            return Found;

I appreciate the help.

Thanks,.

Omar