Last Updated: 22 Mar 2019 14:39 by Huguette
Created by: Huguette
Comments: 0
Category: TreeMap
Type: Feature Request

Currently, the MVC TreeMap does not support direct binding to the model. It can only be bound through a DataSource.




Last Updated: 21 Mar 2019 15:26 by ADMIN
Created by: Craig
Comments: 1
Category: Editor
Type: Feature Request

We are using the Kendo Editor control and need to take actions based on the onChange event firing.  We have found that some formatting changes, such as changing the column width in a table doesn't trigger the onChange event.

Is there a work around for this issue.  It can be reproduced using your editor event demo here

Last Updated: 21 Mar 2019 07:45 by ADMIN
Created by: Bob
Comments: 1
Category: Installer and VS Extensions
Type: Bug Report

I just upgraded to the latest Telerik version.  First of all, congratulations on a job well done on the MVC Project Upgrade Wizard!  With version 2017.3.1026 it was unreliable, took hours to run, and generally locked up Visual Studio; the new version runs cleanly and quickly.

One comment:  The popup dialogs for the Upgrade Wizard do not adapt to different screen resolutions.  I see this where my primary display is high resolution (3840 x 2160) and the secondary is lower res (1920 x 1080).  The effect is that the popup dialogs are cropped if Visual Studio is running on the secondary display:  the message ("file xxx exists; do you want to overwrite?") appears, but the Yes/No buttons and "apply to all files" checkbox do not.  The only actionable option is to kill the dialog, at which point the next one pops up.  The only way I found to stop the Wizard is to kill Visual Studio through the Task Manager. 

The Wizard works perfectly on the primary high-res display.


Under Review
Last Updated: 20 Mar 2019 11:47 by ADMIN

When using QueryableExtensions.ToDataSourceResult() from Telerik MVC, SQL following gets produced:

.. FROM [RMP].[V_UC_EQUIPMENT_LOG2_LOCALIZATION] WHERE ([Extent1].[LOG_TIME] >= convert(DateTimeOffset, ''2019-03-05 23:00:00.0000000 +00:00'', 121)) AND ([Extent1].[LOG_CLASS_ID] IN (78,7,18,30,19,16,17))

When we filter manually in code with linq, e. g.

..  table.Where(e => e.T_EquiID == 234234) ...

the linq provider produces a parameterized query as follows:

AND (@p__linq__0 = [Extent1].[T_EquiID])...


When using a parameterized query, Sql Server can reuse the execution plan much better saving compile time, which is in our case sometimes a big issue.

Please tell us, why can QueryExtensions do produce parameterized queries.

Last Updated: 18 Mar 2019 15:26 by ADMIN

When using the Telerik upgrade wizard I get a error while upgrading my web app:


An error occurred while running the wizard.

Error executing custom action Telerik.KendoUI.Mvc.VSX.Actions.MultiProjectUpdateReferencesAction: System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.VSX.Internal.ProjectManagement.ProjectAssemblyReferenceBase.Equals(AssemblyWrap assemblyReference)
   at Telerik.VSX.ProjectConfiguration.ProjectReferenceManager.EnsureDifferentExistingReferenceRemoved(AssemblyWrap assemblyReference)
   at Telerik.VSX.ProjectConfiguration.ProjectReferenceManager.AddAssemblyReference(AssemblyWrap assemblyReference)
   at Telerik.VSX.ProjectConfigurators.ApplicationReferenceManager.AddReferences()
   at Telerik.VSX.ProjectConfigurators.ApplicationReferenceManager.UpdateReferences()
   at Telerik.VSX.Actions.UpdateReferencesAction.UpdateReferences(IProjectWrapUIComponents projectWrap)
   at Telerik.VSX.Actions.UpdateReferencesAction.Execute(WizardContext wizardContext, IPropertyDataDictionary arguments, IProjectWrap project)
   at Telerik.VSX.Actions.ProjectActionBase.Telerik.VSX.Actions.IProjectAction.Execute(IWizardContext wizardContext, IPropertyDataDictionary arguments, IProjectWrap projectWrap)
   at Telerik.VSX.Actions.MultiProjectActionBase`1.Execute(WizardContext wizardContext, IPropertyDataDictionary arguments)
   at Telerik.VSX.Actions.MultiProjectUpdateReferencesActionBase`1.Execute(WizardContext wizardContext, IPropertyDataDictionary arguments)
   at Telerik.VSX.WizardEngine.Actions.ActionBase.Telerik.WizardFramework.IAction.Execute(IWizardContext wizardContext, IPropertyDataDictionary arguments)
   at Telerik.VSX.WizardEngine.ActionManager.ExecActions()
Last Updated: 15 Mar 2019 08:12 by ADMIN

The "CreateDataSourceResult" function verifies if the given DataSourceRequest "Sorts" list is empty and if the IQueryable provider is Entity Framework. If both are true, it adds a default OrderBy to the query on the first sortable property. This makes sense as EF must be ordered before skipping items.

The following statement checks the given DataSourceRequest and IQueryable:

if (!sort.Any() && queryable.Provider.IsEntityFrameworkProvider())


This leads to unwanted behavior if the query is already sorted on the server and the corresponding SortDescriptor is removed from the "Sorts" list. This is needed if we want to sort on a viewmodel property that doesn't exist on the EF model.

An additional check should be done on IQueryable to see if it is already ordered to avoid replacing the existing OrderBy with a default one.

if (!sort.Any() && queryable.Provider.IsEntityFrameworkProvider() && queryable.Expression.Type != typeof(IOrderedQueryable<TModel>))




Last Updated: 11 Mar 2019 16:01 by ADMIN
Created by: n/a
Comments: 1
Category: Scheduler
Type: Feature Request
Hello, is it possible to add a header and footer to the pdf export? I can see this is possible for other kendo controls like the grid, but the same doesn't seem applicable to the scheduler. 
Last Updated: 28 Feb 2019 09:53 by ADMIN
Created by: Maurice
Comments: 1
Category: NumericTextBox
Type: Feature Request

The ability to mask/encrypt the social security number and or credit card number, only showing the last 4. On focus, show all values on blur encrypt value showing only last 4. On post, send unencrypted value.

i.e. social security:  XXX-XX-1234

Last Updated: 26 Feb 2019 10:21 by ADMIN

Bug report
The issue is reproducible when the DatePicker with DateInput is used as an editor in Kendo Grid for ASP.NET MVC with "InCell" edit mode.

When a value which is less than the Min value or more than the Max value is typed in, the DatePicker is left blank rather than applying the Min/Max value.

Reproduction of the problem
1. Create a grid and set the "InCell" edit mode.
2. Create a DatePickerFor() editor and enable the DateInput(true) property.
3. Input value which is before 1/1/1900 or after 12/31/2099. E.g 1/1/1111
4. Value is left blank instead of the Min value being applied. (Same goes for Max value)

Current behavior
When value before 1/1/1900 or after 12/31/2099 is typed in, the cell is left blank instead of the Min/Max value being applied.

Expected/desired behavior
Apply Min/Max value to the model, instead of null.

Kendo UI version: 2019.1.220

jQuery version 1.12.4

Browser: [all]

Last Updated: 26 Feb 2019 06:37 by ADMIN

This request feature is tied to ticket #1388825. Refer to that ticket for the illustration of the problem I am referring to. 

Given two splitter windows, all I require is to populate one splitter window with some data related to the other splitter window.

In my case, one Telerik splitter window has a simple 3-level Telerik tree control. When the 3rd level is clicked on, I want the other Telerik splitter window containing a Telerik grid to display details of what was clicked on. This requires an AJAX call to avoid having to reload the tree control.

However, while working with Support, there seems to be a very high degree of rocket science and uncertainty involved with implementing this scenario. 

I would have thought with great certainty that the functionality I need would be clearly documented somewhere in the Telerik doc database. I am still amazed that I might the first person who has this problem.

So, this feature request is to essentially provide very clear and competent documentation on the design pattern one needs to implement AJAX calls which pass data between two Telerik controls. At the very least, it would document the design pattern for the scenario I described above.

Maybe this cannot be done in the 21st Century yet. I don't know what is involved. I'm just a backend developer who purchased a Telerik license so I would not have to spend the rest of my life trying to learn Javascript.


Thank you,



Last Updated: 15 Feb 2019 08:52 by Paul
Created by: Victor
Comments: 3
Category: UI for ASP.NET MVC
Type: Feature Request
The Grid should allow switching between case sensitive and case insensitive filtering.
Last Updated: 14 Feb 2019 14:49 by ADMIN
Created by: Kevin
Comments: 1
Category: UI for ASP.NET MVC
Type: Bug Report


I notice that some of the styling has changed for the Blue Opal theme in the latest release (2019 R1), notably the background colour of the selected page on the grid and the already selected items on a Drop Down List have gone from dark blue to a bright blue (see attached screenshots from

Is this by design or by mistake?

Particularly on the drop down list, this change makes it more difficult to identify the already selected items.

Can this go back to what it used to be - or is there a way of manually changing this setting via the site.css?






Last Updated: 14 Feb 2019 07:58 by ADMIN
Created by: Luke
Comments: 1
Category: Grid
Type: Feature Request
Are there plans to implement sorting functions into specific columns in a grid for kendo MVC grids? This feature would be very helpful, and seems to already exist in non-MVC versions of kendo grids ("compare" functions). 
Last Updated: 13 Feb 2019 15:45 by ADMIN
Created by: David
Comments: 1
Category: NumericTextBox
Type: Feature Request


My team and I work on science-related applications often dealing with very small numbers, like 0.0000000000456.  We actually have calculated values stored with over 300 digits to the right of the decimal (one of our current values is 1.70747723470817E-307), so we store them in our databases in Scientific Notation.

We have begun using the Kendo UI NumericTextBox with ASP.NET MVC throughout our applications, and we would like to provide our users with the ability to input values in Scientific Notation; for example, allow a user to type 7e-17 instead of having to type 0.00000000000000007.  We use the kendo.toString() functionality to display values in Scientific Notation, but we need to allow our users to input values using Scientific Notation.

Is there any way we can accomplish this with the Kendo UI NumericTextBox?  If not, could this feature be added?

Thank you for your assistance,


Last Updated: 12 Feb 2019 14:50 by ADMIN


we have a hard time controlling the cells "Enable" attribute in a data binding scenario, because it really depends on the data, e.g. the complete Row must be read only (Enable = false) when Cell "Completed" is marked with true.

I mark this as "Feature request" because I think there is no such functionality, but I'd need some dynamic expression here, you could reuse the validation expressions, e.g.:

enable: "NOT(ISERROR(FIND(\"true\", B3)))"


As an alternative/workaround, maybe we can reuse validation / reject, so instead of making the cell non-editable, leave it editable but reject any kind of change, this is just a thought and I feel like there is no easy way to do it like this either.


You might wonder how we apply validation or enabled/disabled cells in data binding scenario; We basically run post processes after data binding, so because I think there is no other way doing it.

Best regards

Last Updated: 18 Jan 2019 13:57 by ADMIN

I'm using drawing.drawDOM to create a PDF. I have to make a table of contents in the beginning of the PDF. I've got two issues:

- How do I link to another section of the PDF? <a href="#conclusion">Conclusion</a> and then later <a name="conclusion"></a> doesn't seem to work :-/

- How do I figure out on which page a specific part of the document is being rendered? In my TOC I would like to say " 22".

Last Updated: 18 Jan 2019 12:07 by ADMIN
Created by: Jan
Comments: 1
Category: Date/Time Pickers
Type: Feature Request


I'm really loving the new MultiViewCalendar control. It really fits our needs. 

The only thing I'm missing is to select weeks. There is a setting to show the week numbers, but you can't select it. Is this at all possible or planned for future releases?

Can I show the weeks in the DateRangePicker control, too?




Jan Fiedler

Last Updated: 18 Jan 2019 12:00 by ADMIN
Created by: Thor Ludvig
Comments: 1
Category: TabStrip
Type: Feature Request

When working with a dynamically setup of the tabstrip, and hiding/showing tabs according to the data entered in a form, I use jquery scripts to do the logical setup.

Each tab is referenced in the script by their array position:

var tbs = $("#tabstripDetail").data("kendoTabStrip");


For some functions I move/duplicate field from models according to the different customers needs, and to avoid several fields on the form with the same id/name I remove tabs from the collection.


By doing this the array of tabs are changed, and I have to keep track of which array number each tab has compared to the initial number.

My suggestion is that each tab could be named so that it is possible to keep references of the tabs by logical names and avoid array numbers.


This functionality will simplify working with show, hide, remove, select of single tabs.



Last Updated: 11 Jan 2019 09:19 by ADMIN

I'm trying to create a kendo grid inside of a kendo splitter in ASP.Net MVC. My problem is the pager info (i.e. "1 of 20 items") is not displayed on load. If the splitter is moved or a button inside of the splitter is pressed the grid resizes and the pager is displayed correctly. When there are more than 10 pages and the pager numbers and pager info size change to accommodate more digits the pager wrapper is not drawn correctly every time when changing pages.  This issue seems to only be present when the grid has a toolbar

I have tried using the dataBound event to resize the grid elements, but the pager div is not computed yet. I also tried applying a flex box to the pager wrapper and that did not change anything. I added a size to the splitter and it fixed the issue when set to 400px. But when set to something like 33% the issue persists. I need the splitter pane to be bigger than 400px on load so that fix does not work. 

I replicated the issue in this dojo: The issue appears when in fullscreen mode on a 1920x1080 monitor. I have attached screen shots from my application showing the issue while navigating with the pager. paging 1.png shows the initial load fixed using a flex-box. paging 2.png shows navigating to the second page. The pager info is resized and moved off screen. paging 1.2 shows navigating back to page 1. There is a white space left at the bottom. Paging 3 shows the end of the pages. Paging 4 shows clicking the "..." to the previous paging page and the pager info being hidden. Paging inspected shows that the pager info is in the DOM, but resized off the screen when the toolbar is drawn. 

The expected result should show the pager info on load and the grid should fill 100% of the splitter pane. The pager info should be adjusted when navigating to another page in the pager to always be displayed. 

Any help with this issue will be much appreciated. Thanks!

Last Updated: 03 Jan 2019 13:38 by ADMIN
Created by: KSafadi
Comments: 1
Category: Grid
Type: Feature Request

JWT Token authentication has become very popular and one of the main tools to provide authorization and authentication.
JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. In authentication, when the user successfully logs in using their credentials, a JSON Web Token will be returned. 

Whenever the user wants to access a protected route or resource, the user agent should send the JWT, typically in the Authorization header using the Bearer schema. This can be, in certain cases, a stateless authorization mechanism. The server's protected routes will check for a valid JWT in the Authorization header, and if it's present, the user will be allowed to access protected resources. If the JWT contains the necessary data, the need to query the database for certain operations may be reduced, though this may not always be the case.

It would be really helpful to have a built in functionaly ".Authorization(token)" that adds an authorization header to all the requests made by the grid.

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