Some ListBox widget ideas and proposals:

See screenshot: https://lh6.googleusercontent.com/TAVZGw63BSVVT6Nh8hXbiHerZ3L0krBzboONI07PpFByROeqKPiFgrlaPnTMtIUZ94D8xRog=w1920-h960

1. Add two search fields, so it is possible to search within the left and right panes individually.
2. Add headers above the search fields. They can be configured via templates. Also add options for selecting/deselecting all items in the corresponding pane. Checkbox’s middle state should also be considered.
3. Add option (API) for enabling/disabling ListBox widget as a whole widget (similar to DropDownList, ComboBox, etc.), not only item by item.
4. Add support for data virtualization (similar to DropDownList, ComboBox and AutoComplete).
5. Add API (public methods or fields) for retrieving the current status of the items in the ListBox. For example:
- a method/property which returns the count of currently selected items
- a method/property which returns the count of currently showed items (if searching, not all items will be visible)
- a method/property which returns the count of total items
This information can be shown in the headers via template, for example.

The listview endless scrolling is a neat feature but it will be good if we could configure it to be in reverse. We are building chat system in our app and want to have the endless scrolling widget but need it to scroll in reverse.

Add columns to timepicker to have multiple columns instead of a long list.
Like you have for the Telerik Ajax Timepicker 

All controls which work with Models (validation/grid etc) should recognize displayName instead of field name to allow localization.

Model.define({
     fields: {
              Description: { type: "string", displayName: "Beschreibung", validation: { required: true, maxlength: 200 } },
              Number: { type: "number", validation: { min: 0, max: 300 } }
     }
   });

Kendo's support for conditional number formatting results in it picking the negative or positive format even when the underlying value is being rounded to zero. This is generally not what users expect and is inconsistent with .NET's number formatting.

Here's an example:

kendo.toString(-0.1, "0;(0)") // results in "(0)" instead of the expected "0"

In contrast, .NET behaves differently:

(-.1).ToString("0;(0)") // results in "0"


It would be great if kendo's toString implementation incorporated this logic.

More information and examples are available in this Kendo forum post:
http://www.telerik.com/forums/kendo-showing-negative-zero-when-using-conditional-formatting-c729272b262d#0lTodzUtsEeF4d3xn8hhDA

There's also this StackOverflow question:
http://stackoverflow.com/questions/39977630/kendo-conditional-formatting-results-in-negative-zero

A quarter is not the same as 3 months in the same way that a week is not the same as 7 days. Feb-Mar-Apr is not a standard quarter. Kendo automatically lines weeks up on Sundays. Please consider doing something similar for quarters.

Developers should be able to specify grid column sort config property which is different from column field property.For instance, when listing products, my view model may have CategoryName property mapped from EF entity navigation property Category.Name using AutoMapper, while my sorting will use "Category.Name" on the server side.Example config could be like: 
columns[{title:"Category",field:"CategoryName",sort:"Category.Name"}]

This will allow me to flatten my view model without loosing sorting functionality.

Currently there does not seem to be a way to get a reference to all kendo controls within a specified element or otherwise and perform generic operations on them.

I would propose you be able to call a JQuery method and do such things as the following:

    $(.kendoControlClass').each(function () {
        $(this).getKendoControl.enable();
    });

or call methods on specific type of controls

    $(.kendoControlClass-selectable').each(function () {
        $(this).getKendoControl.clearSelection();
    });

Is Multiple File upload possible in imagebrowser ?

I would like to integrate upload (progressbar) with imagebrowser ?

Using kendo UI file upload feature, currently we can upload or remove the files. I wanted to view the uploaded file (and download the uploaded file)

A status-specific control would support max, min, targets, warning levels, etc and not be bound only to percentages as I see in the screenshots of http://www.telerik.com/support/demos or in the other dashboard sample. 
An example of this is:
http://www.oracle.com/webfolder/technetwork/jet/jetCookbook.html?component=home&demo=rootVisualizations_childGauge

The Kendo community is quite heavily developer-based. But as a designer, I need to create design comps using Kendo as a base for our interfaces. Designers need to have templates they can grab, otherwise designers like myself will have to rebuild what we see on the Demo site in our favorite graphics program.

We need .ai/.psd/.sketch versions of the Kendo UI interfaces, even better with skins too (we'll be using Nova as a base).

Pasting a cell value into multiple selected cells results in only the first cell in the range getting the value.

Steps to reproduce:
1) Go to https://demos.telerik.com/kendo-ui/spreadsheet/index
2) Click on cell B3 (Calzone) and press CTRL-C
3) Click on cell B4, hold the shift key and arrow down until cells B4-B7 are highlighted (or select the B4-B7 range with the mouse)
4) press CTRL-V

The outcome is only cell B4 receives the value of "Calzone".

Expected/desired behavior

All cells B4-B7 should have the value "Calzone".

The kendo.drawing.TooltipOptions do not provide a 

show { duration: [time]} 

option that will allow showing the tooltip for a certain duration of time, after which the tooltip will disappear automatically.

Can this be added?

I am trying to find why some Kendo UI controls do not work, and do nothing at all.  No error, just flat do not work and don't give any clue about why not.  Was told about this extension for chrome?  great.  Installed and... ?  now what?  there is a Kendo icon in the upper right, ok let me click that.  it opens the "store" to get extensions of all sorts and types and says the kendo inspector tool IS installed.  ok, and..? if I look at page source?  nothing different.  How this tool is used is not obvious.  So put instructions of how to use it somewhere?

Hi, Is there any control for image edit in kendo mobile ui, i mean after capture call image edit tool to edit image with few basic features like crop, brightness,rotate.

For the Kendo Filter widget, being able to filter the list of fields in the dropdown list would be useful for longer lists and an event to see when the user added or removed a filter condition to manually set any other options for these lists. I have modified your sample filter in the browser console to add the filter to the dropdown in the screenshot here.

A heatmap (grid-style at least) is very much useful in any decent project management application. A widget that could remotely connect color-shades to jSON data would be really great.

The interface for PromptOptions does not extend DialogOptions like it should. I added it into my definition file, and it compiles and works fine when testing.

    interface PromptOptions extends DialogOptions {
        name?: string;
        messages?: PromptMessages;
    }

..,or make it at least optional when using grouped column headers. Scenarios with many or repeating column titles would extremely benefit from this.