Do I have to use javascript?

[Pat02]

I have an old VSTO outlook addin written in C# that I need to recreate. Most of that VSTO addin uses the interop library to get the various outlook email items and what not to perform operations.

The outlook blazor sample project looks like it uses blazor/C#, but then calls the JSInterop to actually do anything with the outlook logic. Can I use the C# interop library and basically ignore js? I would love to reuse the logic I already have, and wrap new blazor UI code around it.

If I have to use js then the blazor sample library seems like a ton of extra work to just say that you can use blazor to make an outlook web addin, but doesn't make any argument for why you actually would want to.