I've created Blazor Wasm project with server.
And i added nuget package to Client project.( as single Syncfusion.Blazor)

And i followed "https://blazor.syncfusion.com/documentation/getting-started/blazor-core-hosted" (first was wasm one) to apply syncfusion blazor to my project.
*With link above i also installed nuget to server project.
Also there might be the license problem so i've registered My communtiy license.
And same to serverside.
Followed example from above.
@Imports_
wwwroots/index
And i grap the example from sideBar and solve some errors and put it in my source.

Result1. TreeData was fine. but Style doesn't applied.
So i thought it might be it's inside of Navbar so i tried to make it outside of it.
Result2. Buttons also doesn't have styles of sf buttons.
So i thought blazor style isolation might be the problem So i checked isolation settings and it said it's obsolute.
https://blazor.syncfusion.com/documentation/getting-started/blazor-webassembly-visual-studio
Conclusion.
What i've done
Follow Example
- It was blazor wasm project.
https://blazor.syncfusion.com/documentation/getting-started/blazor-webassembly-visual-studio
- And server host activated.
https://blazor.syncfusion.com/documentation/getting-started/blazor-core-hosted
- In case of nuget package don't work. I registered with my community license.
https://blazor.syncfusion.com/documentation/getting-started/license-key/how-to-register-in-an-application
- Followed Sidebar example inside of navbar
- Followed sfButton example from other page
But styles doesn't apply on sfCompoents.
I thought i followed all the instructions syncfusion said to.
But there might be something i missed. So i wrote all the things i did and hope someone to help this problem.