Adding the .NET Aspire orchestration code failed. Failed to insert code for project X. Can't find a call to method(s) Build on type Microsoft.AspNetCore.Builder.WebApplicationBuilder in the program main

[krzysiek-b]

I have

		WebApplicationBuilder builder = WebApplication.CreateBuilder(args);
		WebApplication _ = builder.Build();

in program.cs. What do you require here?

[davidfowl]

@antonfirsov @vijayrkn Seems like the tooling failed for this pattern?

[antonfirsov]

@davidfowl I assume you wanted to tag someone else?

[davidfowl]

Oops 😅

[krzysiek-b]

What I see if I do so

int Main()
{
    WebApplicationBuilder builder = WebApplication.CreateBuilder(args);
    WebApplication _ = builder.Build();
}

it works but it breaks on

// file: program.cs
int Main()
{
    Configure(); 
}

void Configure()
{
   WebApplicationBuilder builder = WebApplication.CreateBuilder(args);
   WebApplication _ = builder.Build();
}

I assume this was my issue, but do you have plans to support this?

[BillHiebert]

As you noted it is currently not supported. We assume the call to CreateBuilder() is in the startup method. I've added an item to our backlog to look at improving this.

[rsalus]

So, if I understand correctly, the CreateBuilder() and Build() calls need to be within Main(). This is typically the case when using the minimal program.cs pattern. However, if we’re converting a legacy app that follows an older pattern, those patterns aren’t supported at this time. Is that correct?

EX (non-functional with Aspire):

[BillHiebert]

Yes, it has to be the minimal program.cs pattern. However, the configuration can be done in a method that is called from program.cs and we should find it.