Last Updated: 21 Nov 2019 08:41 by ADMIN
Release R1 2020
As of R1 2020 the Match Case and Match Whole Words options in the Find and Replace dialog will become available for Chrome and Firefox.
Last Updated: 23 Dec 2019 09:09 by ADMIN
Created by: Doug
Comments: 1
Category: UI for ASP.NET AJAX
Type: Feature Request


Our O365 users  see 'Excel on the screen'  so it should behave the same, its Excel in a the browser - which means the Ajax controls are competing with this.
Which means our code is crap because there is a difference in investment between us and Microsoft, we are also burdened with the feature that uses are lazy and dont want to think for themselves, the computer is meant to do thier job for them (so why employ them). 
We also use MS Teams here that allows Excel documents to be used in the Browser, Teams joins sharepoint and skype. 

It would be nice to you to look how your controls might integrate with Office 365  tooling, there is enormous traction in the market with MS Teams and O365 so I imagine the AJAX document sources would need O365/azure examples soon.

It matters that you have a skin that allows users to perceive that this app is just like O365, and the same assumptions can be made about the UX, this lifts a lot of the burden for the developers in training, when the affordance of O365 App and Telerik Apps are the same.

I would appreciate a set of demo examples that connect in to Azure/O365 and equally Dynamics365 (BizTalk) because of the traction in the O365 space, the amount of process automation in businesses across the UK and Europe. So many of the Telerik controls looks like desktop controls, many are better it would be useful to show just how easy it is connect into O365, maybe create a Graph Query connector or a sample O365 connector that covers the CRUD operations for office docs.

Thanks in advance 

Last Updated: 29 Jul 2019 07:48 by ADMIN

We are evaluating whether to use Telerik to redesign a legacy web app written using an old version of Telerik.

After downloading Trial version on fresh install of windows, I can't add ajax control to form. `I am using visual studio 2019, this is the first version of Telerik installed on this computer.  I just get the "Error Creating Control RadScriptManager1. They do show up in the toolbox so this surprises me.

Very latest version.


Could it be a license issue?

Last Updated: 04 Sep 2019 07:58 by ADMIN
Release R3 2019

The current colors, #0082CC and #FFFFFF that are used for forecolor and backcolor, have 4.14:1 color contrast ratio:

The minimum required color contrast ratio is 4.5:1 for AA Compliance, and 7:1 for AAA Compliance.

A possible alternative color for the #0082CC blue can be #007CC.

Last Updated: 08 Nov 2019 11:26 by ADMIN
Release R1 2020
Created by: Randy
Comments: 1
Category: UI for ASP.NET AJAX
Type: Bug Report

I have a RadCheckboxList In an ASP Panel. When Enabling/Disabling the panel the CheckBoxList does not Enable/Disable.  I tested this with a simple mock up with additional controls that work as expected:


<asp:Panel ID="TestPanel" runat="server" Enabled="true">

<telerik:RadCheckBoxList ID="WeeklyDays" runat="server" Columns="4" AutoPostBack="false">


<telerik:ButtonListItem Text="Monday" Value="2" />

<telerik:ButtonListItem Text="Tuesday" Value="4" />

<telerik:ButtonListItem Text="Wednesday" Value="8" />

<telerik:ButtonListItem Text="Thursday" Value="16" />

<telerik:ButtonListItem Text="Friday" Value="32" />

<telerik:ButtonListItem Text="Saturday" Value="64" />

<telerik:ButtonListItem Text="Sunday" Value="1" Selected="true" />



<telerik:RadTextBox ID="TestText" runat="server"></telerik:RadTextBox>

<telerik:RadDatePicker ID="TestDate" runat="server"></telerik:RadDatePicker>


<br />

<telerik:RadCheckBox ID="ToggleEnabled" runat="server" Text="Toggle Panel" AutoPostBack="true" Checked="true" OnCheckedChanged="ToggleEnabled_CheckedChanged"></telerik:RadCheckBox>



 protected voidToggleEnabled_CheckedChanged(objectsender, EventArgs e)


TestPanel.Enabled = Convert.ToBoolean(ToggleEnabled.Checked);


Last Updated: 14 Aug 2019 12:34 by ADMIN
Created by: Chris Dalessandri
Comments: 3
Category: UI for ASP.NET AJAX
Type: Bug Report

Reproduction steps:

Go to the Telerik demo at
In the Comment box, type "one two".  Do not let the textbox lose focus.
Highlight "two" and start to drag it to move it before "one". The other text ("one") will disappear, and is gone forever, as far as I can tell.

It can be also reproduced with this configuration:

<telerik:RadTextBox RenderMode="Lightweight" runat="server" ID="RadTextBox3" Width="200px" EmptyMessage="Enter comment" TextMode="MultiLine" Height="100px" Resize="None"></telerik:RadTextBox>

Last Updated: 16 May 2019 15:54 by ADMIN
Created by: Sergey
Comments: 1
Category: UI for ASP.NET AJAX
Type: Bug Report


There seems to be a bug with the RadEditor "Find and Replace" feature. I have recorded a screencast available here documenting the issue and will also provide below the information written:

Reproduction Steps:

Expected: '<img' is replaced with '<picture'

Actual:'<img' is replaced with '&lt;picture'

Notes:This seems to be an issue with encoding as &lt; is a less than tag. As you can see in the video, I do not think there is a way to escape the character to allow it to be replaced correctly. If you have additional questions, please ask.


Best Regards

Last Updated: 09 Apr 2019 13:40 by ADMIN
Created by: Anne
Comments: 1
Category: UI for ASP.NET AJAX
Type: Bug Report
Last Updated: 11 Apr 2019 08:13 by ADMIN

I have a problem with the deletecommand of the radgrid control (Telerik.Web.UI 2019.1.215.40).

This happens only in the latest release of Chrome.

I hope you can replicate this issue and eventually fix it. 

Last Updated: 10 Apr 2019 15:26 by ADMIN
When the ribbon bar is set to RibbonBarFloating, RibbonBarPageTop or RibbonBarShowOnFocus the menus cut off so you can't access menu items that would be displayed below bounds of the ribbon bar.

You can see this happening at:

I have also supplied a snip of the issue.
Last Updated: 02 Apr 2019 14:15 by ADMIN
Created by: Scott
Comments: 1
Category: UI for ASP.NET AJAX
Type: Feature Request



Trying to use a web testing tool (Selenium) and using xpath is not always working.  I was wondering if it would be possible to always add an ID property to controls, especially in drop downs etc. so that it can clicked properly.

Last Updated: 27 Mar 2019 21:46 by ADMIN
After the alert was confirmed, a Post Back is expected which does not happen due to a JavaScript exception: Cannot read property 'toString' of null
Last Updated: 10 Apr 2019 15:28 by ADMIN
Bug introduced in build 2019.1.115+ causes 3 extra <p>&nbsp;</p> when user presses Enter key in FireFox.  Happens when Editor is in a Wizard with more than one step.  Bug does not occur in builds prior to 2019.1.115.

Try this to reproduce:

 <telerik:RadWizard runat="server" ID="rwMain" BorderStyle="Solid" BorderColor="LightGray" BorderWidth="1px" RenderMode="Lightweight" DisplayNavigationButtons="True">
            <telerik:RadWizardStep ID="RadWizardStep2" Title="Content Template" StepType="Step">
            <telerik:RadWizardStep ID="RadWizardStep3" Title="Content Editor" StepType="Step">
                <telerik:RadEditor ID="ContentEditor" runat="server" RenderMode="Lightweight"></telerik:RadEditor>
Last Updated: 10 Apr 2019 15:41 by ADMIN

This can be reproduced with the following sample:

<telerik:RadWindow runat="server" ID="RadWindowWithEditor" Height="1000px" OnClientShow="fixEditor"
        <telerik:RadEditor RenderMode="Lightweight" runat="server" ID="RadEditor1" Width="700px" Height="700px">
Lorem ipsum dolor sit amet
<asp:Button ID="Button5" Text="open the RadWindow" runat="server" />
<script type="text/javascript">
    function fixEditor() {
        setTimeout(function () {
            $find("<%=RadEditor1.ClientID %>").onParentNodeChanged();
        }, 100);


Last Updated: 27 Feb 2019 08:52 by Marin Bratanov
Last Updated: 20 Mar 2019 15:28 by ADMIN
Created by: MailUp Dev
Comments: 5
Category: UI for ASP.NET AJAX
Type: Bug Report
Using Firefox 64.0,  selecting an image doesn't appear the resizing handles which are located on each corner of the object
Last Updated: 20 Dec 2018 14:19 by ADMIN
Created by: Vinson
Comments: 1
Category: UI for ASP.NET AJAX
Type: Bug Report
When I try to replace a white space in RadEditor, it is able to replace the words at the first line. The second one and onwards are not able to replace.


1. Open 'Find And Replace' dialog.

2. Go to 'Replace' tab.

3. Enter a white space for 'Find' text box.

4. Enter any character or word for 'Replace With' text box.

5. Hit on 'Replace All' button.

Reproducible in content which contains table elements and in the live demo:
Last Updated: 06 Jan 2020 17:04 by ADMIN
Created by: Srini
Comments: 2
Category: UI for ASP.NET AJAX
Type: Feature Request

Request to addorder tracker component similar to the attached screen shot.



Last Updated: 11 Feb 2019 10:08 by ADMIN
Created by: Rumen
Comments: 3
Category: UI for ASP.NET AJAX
Type: Bug Report
I'm using couple of Rad Editor controls in my webpart and using ToolProviderID for performance optimization.
I'm initializing one rad editor toolbar from server side and using the same toolbar to provide other rad editors with their toolbar, Bascially I'm using ToolProviderID attribute to initialize other RadEditors, after doing this the Comments and Track Changes feature stop working although their options are selected in the toolbar.

<telerik:RadEditor RenderMode="Lightweight" runat="server" ID="RadEditor1" EnableTrackChanges="true" EnableComments="true">
    <TrackChangesSettings Author="AuthorName" CanAcceptTrackChanges="true" UserCssId="reU0" />
            <telerik:EditorTool Name="AcceptTrackChange" />
            <telerik:EditorTool Name="RejectTrackChange" />
            <telerik:EditorTool Name="AcceptAllTrackChanges" />
            <telerik:EditorTool Name="RejectAllTrackChanges" />
            <telerik:EditorTool Name="EnableTrackChangesOverride" />
<telerik:RadEditor ID="RadEditor2" runat="server" ToolProviderID="RadEditor1" EnableTrackChanges="true" EnableComments="true"></telerik:RadEditor>
<telerik:RadEditor ID="RadEditor3" runat="server" ToolProviderID="RadEditor1" EnableTrackChanges="true" EnableComments="true"></telerik:RadEditor>
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