There is no way to use tree as a column in a grid.
A TreeGrid would use hierarchical datasource where one column would show nodes and other columns would show node properties.

Here is an example (from Sencha Ext JS)
http://dev.sencha.com/deploy/ext-4.1.0-gpl/examples/tree/treegrid.html

add delay parameter in miliseconds for the kendo.ui.progress so you don't see your container blinking if your ajax calls are fast.

The drawer widget can be opened either via a button click or the user swiping anywhere. Our users consider this unexpected behavior, and often wonder what they are looking at after an accidental swipe.

Please support API access for private NuGet feed. It is more friendly to build servers and avoids user information leaking.
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ADMIN EDIT
Update from 1 Mar 2021 - At the moment we are looking at providing certificate-based access - a relatively new feature that seems to be the current best practice (issue, PR). While it does require a little bit of setup, it does not expose secrets in the URL, and does not require user credentials.
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The beta text editor is looking good and has an option to insert images via url.
However for most end users they will need a simple image upload.

The kendoupload means you already have much of the required functionality, it just needs to upload the image and return the url.

Also options such as adding title, alt, resizing and alignment will be good.

We currently use ckeditor and until the advanced image options are matched will not be able to move this over to kendo.

Add a function that will return the Kendo UI version we are working with.

Getting versions of the underlying librairies (Like JQuery) could also be interesting

For a column chart, both the column and its (optional) label can be clicked and wired up with seriesClick. However, the cursor only turns into a pointer (hand) when hovering over the column; it does not do this for the label above, even though it's active. I'd like this to be consistent, and thus have hovering over the label turn the cursor into a pointer as well.

The current drop-down list works great.  However, in situations where the options are hierarchical there are (at least) two obvious solutions.

1) Have two drop-down lists (perhaps with some js altering options based on selections).

2) Display a tree of options from the drop-down. (much like a menu)

Here is an example of #1
http://www.jgeppert.com/jquery-doubleselect/


Here is a very good example of option #2
http://www.givainc.com/labs/mcdropdown_jquery_plugin.htm

The advantage to #1 is that you can easily fire off js after selected options. 

The advantage to #2 is that you can determine all available options on the server and return a structure for rendering.  Also, #2 does not take up more screen real estate. 

I think addressing these interface scenarios would help Kendo become even more usable than it already is.  

Thank you.

A means is needed to zoom the content view area of a document while leaving the header and footer (tabstrip) stationary.

Currently Kendo UI Mobile puts meta tags in the HEAD of the document, effectively preventing zooming and pinching altogether.  It would be nice if a widget or tool were made available to allow zooming of specific page elements.

We want the Grid fix the remote virtual scrolling with groups. 
In this case the Grid stay launching requests indefinitely.

When sorting a foreign key column on grid, the sorting is performed using the value/id - which is wrong. The sorting should consider the text displayed to the user.

Some feature I like to see and really miss is the "band" chart type.


See some good example here: http://www.visiblox.com/visibloxcharts/examples/chart-types/line-and-area/band-chart/

I would like a control to accept durations in the format HH:MM, and persist as a number minutes (or maybe optionally fractional hours).  Something similar was suggested here (not by me):

http://www.telerik.com/forums/mobile-time-duration-picker

I have a time keeping application where user need to be able to enter summarize duration amounts on their timesheets, such as 8 hours of Holiday time (entered as "8:00").  It doesn't make sense to enter this as a time range.

We're accomplishing it now with a textbox, a masking library, and a bunch of fragile JS code, but I'd like a control that is natively build for this.

Plotband functionality for RadHtmlCharts in UI for Asp.net AJAX definitely needs the ability to add tooltips and labels, otherwise the plotband is meaningless.

It would be nice that export-to-excell feature supports the text orientation which is supported by MS Office and Open Office. This feature lets the user to have vertical text in the worksheet.

It would be very nice if we could export a chart (and its data) to Excel.

Knockout.js is a de-facto standard.
It would be nice if KendoUI supported Knockout so developers could use just one paradigm of bindings/observables/templates/etc.

Allow the developer to add various annotations to charts specifying position, alignment, color and font information.  Also, provide key information about the chart objects such as their position, center, etc..

I'd really appreciate some kind of action bar on Android devices. For now the android theme is mostly just black and white and not really appealing (the navigaion and title).
Furthermore Navigation would be much more intuitive when using the new 4.1 ActionBar with back(icon) and view-title. 
A little makeover of the buttons would also be nice ;)
http://developer.android.com/design/patterns/pure-android.html