ASP.NET Core 3.0–Swashbuckle error

As probably most people in the .NET ecosystem I’m using Swashbuckle to generate my OpenAPI documentation. (Anyone using NSwag instead?)

After upgrading to ASP.NET Core 3.0 (and switching to the 5.0-rc4 prerelease version of Swashbuckle), the following code no longer compiled:

	public void ConfigureServices(IServiceCollection services)
	{
	services.AddDbContext<TodoContext>(opt =>
	opt.UseInMemoryDatabase("TodoList"));
	services.AddControllers();
	// Register the Swagger generator, defining 1 or more Swagger documents
	services.AddSwaggerGen(c =>
	{
	c.SwaggerDoc("v1", new Info { Title = "My API", Version = "v1" });
	});
	}

view raw FailingSwaggerConfig.cs hosted with ❤ by GitHub

I had to replace the Info class which couldn’t be found by the OpenApiInfo class:

	public void ConfigureServices(IServiceCollection services)
	{
	services.AddDbContext<TodoContext>(opt =>
	opt.UseInMemoryDatabase("TodoList"));
	services.AddControllers();
	// Register the Swagger generator, defining 1 or more Swagger documents
	services.AddSwaggerGen(c =>
	{
	c.SwaggerDoc("v1", new OpenApiInfo { Title = "My API", Version = "v1" });
	});
	}

view raw CorrectedSwaggerConfig.cs hosted with ❤ by GitHub

This OpenApiInfo class is now part of the Microsoft.OpenApi.Models namespace.