Support for older ASP.NET Core hosting models - IWebHost, IHostBuilder

[Swellenator]

I have just updated an existing ASP.NET Core app to .NET 8. I tried to add .NET Aspire Orchestrator support via the Visual Studio tooling and received this error:

Microsoft Visual Studio Failed to insert code for project [ApiProject]. Cant find a call to method(s) Build on type Microsoft.AspNetCore.BuiIder.WebAppIicationBuiIder in the program main.

After some digging I have concluded it is due to an older unsupported hosting model, IWebHost. I updated to a newer IHostBuilder, but still no luck. It looks like ASP.NET Aspire requires IHostApplicationBuilder.

I think this should be made clearer at least in the documentation. It would be good to have a note stating that you need to be using IHostApplicationBuilder not just .NET 8.

I would also consider making the error from the tooling a bit better. It is clear from the Extensions part of ServiceDefaults project that you need to use IHostApplicationBuilder, but when relying on tooling the error message doesn't help that much.

[varndellwagglebee]

Is there an updated on this? I too need IHostBuilder

[bradygaster]

I do too. Will check on this.

[bradygaster]

@varndellwagglebee and @Swellenator - what version of .net is the worker you're trying to orchestrate with aspire?