Although the Tree view is very powerful on displaying the tree structure, modifying it is very frustrating. We almost go for a separate module for maintaining the info. SOme examples here may be very helpful, especially for Kendo novices. 

To have a consistent look in grids toolbar, it should be possible to add an icon class to custom buttons. Not possible through .HtmlAttributes() because those gets applied to the wrapper link and kendo icons are displayed via inner span tag.

.ToolBar(toolbar =>
    {
        toolbar.Create(); // Has [+]-Icon
        toolbar.Custom().Text("My Custom Button"); // Does not have an icon
    }

Would be nice to have an option like

toolbar.Custom().Text("Reset Grid Settings").Icon("k-i-funnel-clear");

which results in 

<a href="/Tarife" class="k-button k-button-icontext">
    <span class="k-icon k-i-funnel-clear"></span>
    Reset Grid Settings
</a>

I find ButtonGroup for mobile framework very useful to desktop (classic) web application too.

Could you add this widget to web framework please?

An important configuration is to choose if have comportament like "checkboxlist" or "radiobuttonlist", and for sure its orientation, vertical or horizontal. 

The tools should have all the options as the javascript for example: Gantt custom views can only be used if you use the JavaScript version.  The lack of full support defeats the point of buying a MVC wrapper.

In the declaration of my Kendo Upload Controller i want to be able to specify a different button or anchor to throw the Upload Event.

An organization (or more preferable a flowchart) chart like the one in Telerik ASP.NET Ajax suite

It would be nice to have a MultiColumnComboBox as we have it already in WinForms.
A MultiColumnComboBox is a special case of combo box control with Grid integrated in its drop-down. The control combines the functionality and features of DropDownList and Grid.

https://docs.telerik.com/devtools/winforms/multicolumncombobox/multicolumncombobox

Kendo UI implements all the functional features of Web From's RadDropDownTree control  
Checkboxes
CheckAll and Clear Buttons
Filtering
Server-side Templates
TextMode
Validation
http://demos.telerik.com/aspnet-ajax/dropdowntree/examples/overview/defaultcs.aspx

It would be great to have the ability to have to conditionally set behavior for columns and buttons.

On a Grid with this:
.Columns(columns =>
{
  columns.Bound(b => b.IsEditable).Hidden(true);
  columns.Bound(b => b.Id);
  columns.Bound(b => b.Description).Width(200);
  columns.Command(c=>
        {
              c.Edit();
        });
})

Today if I want to hide a button depending on a cell value I need to do it on databound event.
It would be great to have the option to set something like:
command.Edit().Display(p => p.IsEditable); 

For a column, it would be nice to have something like:
columns.Bound(b => b.Description).Width(200).Editable(p => p.IsEditable);

Ponder? its a basic usability Feature, Kendoui is supposed to be all about usability, surely this is Ponder? There should be a standard (easy/inbuilt) way to show that a grid data source has no records because that is the default opposite to a populated data grid. at the very least if data is empty then show "nothing" all mine does is leave the spinning ajax wheel running forever, so end users does not know, this means i have to write extra code just to implement this, so please consider this "feature"

I'm using EF6 in my project, so I can use Async/Await on all methods.
My question is: could you add a ToDataSourceResultAsync method?
Inside, you could call CountAsync and ToListAsync.

Since the new grid only works with kendo validator, it is important to support all the same jquery validate features that work seamlessly with MVC. The old telerik grid worked just fine with remote validation.

KendoUI MVC Serverside wrappers should allow exporting grid data to PDF, Excel and CSV. While this has been asked for before, what I am asking is that this feature be part of the KendoUI complete with server side wrappers so that this is no longer just a limitation with the client-side framework. Every business application we have with grids requires the ability to export in PDF, Excel and CSV formats.

Nowadays, was promissed exporting Gantt to PDF.
It is not working. Just prints what you see. It is very limited.
Should allow: 
1)  option like "allPages" to print all Gantt Diagram in any page format.
Making a "printscreen" of the visible gantt it is any solution for any project. 


2) Export Gantt data to excel.

export PDF in Persian or Arabic character is incorrect
Kendo UI supports PDF export but no export correctly with Persian and Arabic characters.

It would be nice if the traditional HTML helper interface could be augmented with tag helpers for some of the simpler widgets. Dropdowns, date pickers, buttons and the like could all be good candidates for tag helpers.

Currently it is not possible to define a DataSource using ASP.NET MVC wrappers and assign the same shared DataSource to a Grid and Chart control (common scenario for reports where you want to visualize the data in a small chart above the grid). The only solution currently is to make two separate calls to the server (and define the two identical data sources twice) which is fairly expensive in a reporting scenario where there's more data that needs to travel across the wire sometimes instead of simple CRUD/transactional scenarios...

I am using Kendo Scheduler to show the appointments. I have appointment creation/edition screen. I want to redirect it to that page whenever user tries to add/modify an appointment/ Recurring  appointment  from Scheduler. I want to hide the Edit Recurring Item popup message in KendoUI Scheduler while editing recurring appointment as I want to edit the whole series instead of editing single occurrence. So whenever user tries to edit recurring appointment, i want to redirect it to appointment editing screen with all the details without showing any message.