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David Cresswell
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David Cresswell asked on 22 Sep 2025, 09:47 AM

Hi,

I've just created a demo Blazor project using .NET Core 8.0 & Telerik UI for Blazor 9.0.0 (although have tried latest 9.1.0. too). 

I've gone through the standard Telerik setup stuff and can see/use components as I've previously done i.e. with correct styling etc.

For some reason, when I create a demo page including even your overview example, I simply get the loading spinner, but no PDF is ever rendered and no obvious exceptions or errors appear. Have tried a couple of other basic examples too, with the same outcome.

Is there some newbie "gotcha" that I'm missing?

Thanks

David

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Dimo
Telerik team
answered on 23 Sep 2025, 10:02 AM

Hi David,

Add a generic non-Telerik <button> with an @onclick handler next to the PDF Viewer (similar to what you get in Counter.razor). Does the handler work? If not, then the .razor file is not interactive.

If the button works, please send us the app.

On a side note, the latest Telerik UI for Blazor version is 11.1.1.

Regards,
Dimo
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David Cresswell
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commented on 23 Sep 2025, 10:18 AM

Dimo,

Ah-ha, interactive mode was indeed missing from my Routers/HeadOutlet. Once added, it has all kicked in correctly.

By chance, I had managed to get it working via another (GitHub originated) project, but hadn't yet boiled the difference down to rendermode.

Yes, I've also now updated to version 11.1.1. Why the steep jump in version numbering?

Many thanks

David

Dimo
Telerik team
commented on 23 Sep 2025, 10:49 AM

We had two consecutive releases with breaking changes recently - 10.0 and 11.0. The Fluent theme change in version 11 did not affect a lot of customers or any Telerik APIs, but we still had to flag it, due to the semantic versioning that we use.
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