How to get ASP.NET Core 8 Blazor Web App (without index.html) to run hosted in GitHub Pages

Question

In an ASP.NET Core 7 Blazor WebAssembly app, I had everything working well hosting on GitHub Pages via Actions deploying with the help of JamesIves/github-pages-deploy-action@v4

But after upgrading to ASP.NET Core 8 and converting it to a Blazor Web App, it uses a App.razor file in the server project instead of index.html. Index.html is deleted.

I think GitHub Pages needs an index.html to work at all, right? How do I get my Blazor Web App to work in GitHub Pages without index.html? If I just try it the same way as in the Blazor WebAssembly app, I get the 404 page, and I assume that's because I have no index.html. Any suggestions?

If you already have a Net7 standalone application, then create a net8 Standalone Application and look at what changes between the Net7 and net8 templates. I don't think a lot. The Blazor Web App template is the old Server/WebAssembly hosted template, with pre-rendering in WebAssembly. — MrC aka Shaun Curtis
– MrC aka Shaun Curtis, Commented Mar 10, 2024 at 14:31

LoneSpawn · Accepted Answer · 2024-03-10 01:57:49Z

2

GitHub pages supports static hosting only. A "Blazor WebAssembly Standalone App" can be hosted on GitHUb pages because it is just static files. But a "Blazor Web App", which is what your app is, is incompatible because it needs to run a .Net process to work.

Either convert your app to a "Blazor WebAssembly Standalone App" to be compatible with GitHub pages, try a VPS (Ex. Amazon Lightsail), or maybe try Microsoft Azure. Both have some free offerings or trials.

edited Mar 10, 2024 at 1:57

answered Mar 10, 2024 at 1:52

LoneSpawn

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2 Comments

Patrick Szalapski Over a year ago

Perfect, that makes sense. How can I convert my app to "standalone"? A few searches don't reveal much. Just start over?

LoneSpawn Over a year ago

Someone already asked how to do that and accepted an answer: Convert a Blazor app created by dotnet new blazor to Blazor WASM 👍

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