Telerik Forums
UI for Blazor Forum
1 answer
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Telerik release notes are pretty generic with little or no detail references especially to "breaking changes".

Release History

For example:

No links to an example of code with "Before" and "After" needed to adjust for the Breaking Changes. 

So what is "smartbox mode" ... no link to what this feature is and how it would be used.

On "New" features there is no link/reference to where these "New" feature was requested nor number of requests.  Some sort of direct link showing who wanted the feature and why.

And we're still missing a lot of basic features like a Print option for Scheduler that will format/size the Schedule automatically to the output ... we're still using JS work-arounds.

Still no documentation on various CSS for on controls so we can quickly identify and adjust as needed ... avoid having to do painful browser developer mode hunting for what we need and setting pause of control states to discover etc.

Still no easy adjustments to visuals of DialogFactory.

Still issues with leaving a grid cell and clicking on a button outside the grid and losing data entered because the user didn't hit the Enter key.

I know I've said this before, but it's disappointing and does make one wonder if Telerik think Blazor is going to have a short life cycle hence isn't getting much development attention.  I get that Microsoft have burned us all in the past (Silverlight for example) but MS do seem committed to Blazor this time around as they continue to add more and more .NET support for it and it will replace ASPX.

Telerik support is top notch (you folks excel here), but there seems to be lack of product direction and frankly feedback process seems entirely useless.

Rob.

Dimo
Telerik team
 answered on 29 May 2026
1 answer
15 views

I would like to request the possibility to highlight or hide non-business days in the GANTT component for Blazor:

Currently there is no way to show Saturdays and Sundays columns in a different color or hide them.

thanks,

Matteo

 

__PRESENT
Ivan Danchev
Telerik team
 answered on 18 May 2026
0 answers
18 views

I have "Telerik UI for Blazor 13.3.0"  on Safari 26.0

Attached video from your online ComboBox - Virtualization

 

This is can be fixed by "Clicking outside the component can mitigate the problem"

https://feedback.telerik.com/blazor/1596459-the-opened-lists-do-not-close-in-safari-when-clicking-the-open-close-button

Aleksey
Top achievements
Rank 1
 asked on 18 May 2026
0 answers
22 views

This bug already was fixed in the "UI for Blazor 5.0.0" ("ComboBox dropdown will not open or close in Safari")

https://www.telerik.com/support/whats-new/blazor-ui/release-history/ui-for-blazor-5-0-0

 

I have "Telerik UI for Blazor 13.3.0"  on Safari 26.0 and 26.5

 

This is can be fixed by "Clicking outside the component can mitigate the problem"

https://feedback.telerik.com/blazor/1596459-the-opened-lists-do-not-close-in-safari-when-clicking-the-open-close-button

 

Aleksey
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 asked on 13 May 2026
2 answers
42 views

Hello,

I'm using Telerik.UI.for.Blazor version 7.1.0 and I'm trying to automatically translate the telerik components (specifically, a TelerikTreeList but there wil be more) following the tutorial on https://www.telerik.com/blazor-ui/documentation/globalization/localization but they are not being translated.

  • I have copied the TelerikMessages files (both the resx and the es-ES.resx) from C:\Program Files (x86)\Telerik\Telerik UI for Blazor 6.2.0\messages into my Properties folder and set them as EmbeddedResource.
  • I have implemented an ITelerikStringLocalizer class as follows:
public class TelerikLocalizer : ITelerikStringLocalizer
{
    public string this[string key] => TelerikMessages.ResourceManager.GetString(key, TelerikMessages.Culture) ?? key;
}
  • I have registered it using the following code:
services.AddSingleton<ITelerikStringLocalizer, TelerikLocalizer>();
services.AddLocalization(options => options.ResourcesPath = "Properties");
services.AddTelerikBlazor();

Finally, in my App.razor.cs class, I have set the default culture to spanish as follows:


        var newCulture = new CultureInfo("es-ES")
        {
            DateTimeFormat =
            {
                ShortDatePattern = DateTimeFormatter.ShortDateFormat,
                ShortTimePattern = DateTimeFormatter.HourFormat
            }
        };
        CultureInfo.DefaultThreadCurrentCulture = newCulture;
        CultureInfo.DefaultThreadCurrentUICulture = newCulture;
        Thread.CurrentThread.CurrentCulture = newCulture;
        Thread.CurrentThread.CurrentUICulture = newCulture;

However, when I go to the TelerikTreeList, the tooltip of pages and the number of items are still in english, as you can see in the attached image. What am I doing wrong?

Thank you for your support.

Román

 

Román
Top achievements
Rank 1
Iron
 answered on 13 May 2026
6 answers
1.8K+ views

My project is a windows service that hosts a blazor web site and api.  When deployed using an MSI, Telerik says it is not licensed.  What must be done with the license file to ensure it is registered?

            int portNumber =
                builder.Configuration.GetValue<int>(
                    "Kestrel:Startup:Port");

            builder.Host.UseWindowsService();
            builder.WebHost.UseKestrel(options =>
            {
                options.Listen(IPAddress.Loopback, portNumber);
            });

Lance | Senior Manager Technical Support
Telerik team
 updated answer on 11 May 2026
1 answer
34 views

Following your previous help on the resource column width issue, I have a similar question about row height in the timeline view.

I would like to reduce the height of the resource rows to display more resources on screen.

When I try to reduce the row height using CSS on .k-scheduler-row (e.g. min-height: 20px ), the rows do get smaller but the appointments become misaligned — their vertical position is calculated based on the original row height, not the new one.

I saw this was a requested feature but I didn't find updates on the forum.

Is there a way to achieve this ?

Thank you in advance for your answer.

Tsvetomir
Telerik team
 answered on 07 May 2026
1 answer
35 views

Hi,

I am building a fleet management planning application using the Telerik Blazor Scheduler with around 400 vehicle resources.

Context: I use the Timeline view with vertical grouping and it works perfectly. I also need a Day view, but vertical grouping in Day view is not an option for me — it generates 24 time slots per resource, which makes the page extremely heavy and causes it to crash with 400 resources. So I am using horizontal grouping for the Day view instead.

The problem: With horizontal grouping in Day view and many resources, the resource label columns are very small and the text becomes unreadable. After inspecting the generated HTML, I noticed an "overflox: hidden" rule on the resource label cells that seems to be constraining their width to the minimum available space rather than fitting the content.

I tried removing this CSS rule which makes the text readable, but it breaks the alignment between the resource labels and the scheduler body slots.

My questions:

  • Is there a native parameter to control the resource column width in this configuration?
  • If not, what is the recommended CSS approach to resize the columns without breaking the slot alignment?

Thank you in advance.

Ivan Danchev
Telerik team
 answered on 01 May 2026
1 answer
38 views

Hy,

In my web app in blazor .net 10 I use the TelerikQRCode component in one page set as follows:

The encoding is set to UTF-8 because the value contains special characters (such as emojis).

It seems that the component automatically adds some initial BOM bytes to the value, which is passed in a 'clean' way, i.e. without these initial bytes,

This creates a problem for me when I read the data with the scanner reader: I have no problems with the Honeywell scanner, but with the Datalogic scanner, when I read the automatically generated QR code, the string contains the following characters at the beginning: Ã¯Â»Â¿

Is there a way to fix this issue directly with the Telerik component, without having to modify the configuration of all the Datalogic scanners?

Thanks,

Marco

Dimo
Telerik team
 answered on 30 Apr 2026
1 answer
113 views
Unfortunately, I can't install the Blazor components. I tried everything with no luck.


The automated installer cannot identify .NET version and asks for .Net core SDK 3 or later. BTW.. the detailed instructions link on this dialog points to a URL that returns 404.


PC Config: Windows 11 ARM64 (Parallels VM on MacBook M processor), VS 2026 ARM64, .NET 8,9,10 SDKs installed.
Maria
Telerik team
 answered on 22 Apr 2026
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