This sticky thread lists known issues and breaking changes introduced in the UI for ASP.NET AJAX releases.
Q3 2011 (Version number: 2011.3.1115)
Problem: When adding items to OData-enabled controls (RadMenu, RadTreeView, RadListBox, RadComboBox) through design time erroneous markup is applied to the control:
<telerik:RadListBox runat="server" ID="RadListBox1">
<Items>
</Items>
<WebServiceSettings>
<ODataSettings InitialContainerName="">
</ODataSettings>
</WebServiceSettings>
</telerik:RadListBox>
Please note the added ODataSettings section. It will cause JavaScript errors on the page.
Solution: Remove the ODataSetting section and the issue will vanish. The problem is also fixed in the Q3 SP1 release, version number 2011.3.1305When I run my project I'm getting this error
Could not load file or assembly 'Telerik.Web.UI' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
In my web.config I checked that the version in the web.config is the same as the version I'm using in references
<assemblyIdentity name="Telerik.Web.UI" publicKeyToken="121fae78165ba3d4" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-2020.2.617.45" newVersion="2020.2.617.45" />
We have an application that uses RadGrid and one of our clients recently performed a penetration test on our application and identified the hidden input _ClientState as a vulnerability because they were able to trigger a buffer overflow error.
Here is the relevant code from the test where ClientState=AAA repeats ...
ctl00_ctl00_MainContent_MainContent_MyRequestGrid1_MyRequestCustomRadGrid_ClientState=AAAAAAAAAAAAAAAAAAAAAAAA
Is there a way to prevent this from happening? Perhaps some way to set the max length for this hidden input or some other technique that we can utilize to mitigate this vulnerability?
We are using Telerik RadControls for ASP.NET Ajax.
For reference, there is another thread related to this topic (i.e., ClientState hidden field) where my colleague posted a similar question but received no response - http://www.telerik.com/forums/what-is-clientstate-input-hidden-for
Hello
we have an application that needs to be put behind a reverse proxy for security reasons. The URLs in the app all need to point to the reverse proxy URLs. However, the URLs for web resources and the dynamically generated JavaScript URLs point to the backend server, so a lot of functionality is broken. We have no possibility to modify reverse proxy rules.
Is there any way to modify or rewrite the dynamically generated URLs and the web resource URLs ? We tried intervening the page rendering, some stuff works, but a lot of other things do not.
Thanks!
I'm experiencing an issue where the page becomes unresponsive for a long time whenever any Telerik control (such as refresh or loader) is triggered. The page keeps loading indefinitely, causing significant delays, and eventually, the page becomes unresponsive.
Additionally, the following error appears in the browser console:
Uncaught Sys.WebForms.PageRequestManagerTimeoutException: Sys.WebForms.PageRequestManagerTimeoutException: The server request timed out.
at Error.create (https://test.plc.com/GS/Telerik.Web.UI.WebResource.axd?...:6:2736)
at Sys.WebForms.PageRequestManager._createPageRequestManagerTimeoutError (https://wpinhouse.knpc.com/GPCS/Telerik.Web.UI.WebResource.axd?...:15:11219)
at Sys.WebForms.PageRequestManager._onFormSubmitCompleted (https://wpinhouse.knpc.com/GPCS/Telerik.Web.UI.WebResource.axd?...:15:11219)
The issue arises when interacting with Telerik controls that trigger a page request, causing the page to hang and ultimately become unresponsive.
issue started from Feb 17 2025
After updating to the latest version (2025.1.218), I received an error on only one of my pages where I'm using the asp:RequiredFieldValidator.
The error stated that WebForms UnobtrusiveValidationMode requires a ScriptResourceMapping for 'jquery'...
Initially, I added the script mapping to the global.asax.cs page, but then discovered I could just disable UnobtrusiveValidation in the web.config.
The error was resolved with each of these solutions, but I wanted to get away from modifying the global.asax page, so I went with the web.config setting.
My questions are what has changed that led to this error, and which method is recommended? What are the ramifications of simply disabling it in the web.config?
hi,
we are looking for a component (client side is preferred) that gets 2 inputs: a json schema and a json data fields that match the schema.
the component should generate a static html component (not inputs) to nicely display the data values according to the schema
for example in case we have 3 items of types string, number and boolean.
Name: David the king
Age: 38
Married: Yes
do you have such component? maybe created as PDF?