Using WebApiContrib.Core.Formatter.Csv in ASP.NET Core 3.0 Web API project

Question

I want to migrate the AddCsvSerializerFormatters configuration to .NET Core 3.0

Taken from the example code here

services.AddMvc(o =>
    {
        ...
    })
    .AddCsvSerializerFormatters()

A .NET Core 3.0 web api project registers just the controllers, and registering all of Mvc seems overkill.

public void ConfigureServices(IServiceCollection services)
{
  services.AddControllers();
  ...
}

References:

• https://learn.microsoft.com/en-us/aspnet/core/migration/22-to-30?view=aspnetcore-3.0&tabs=visual-studio#mvc-service-registration

Answer 1

The ServiceCollection.AddControllers() returns an IMvcBuilder type. Since this package adds an extension AddCsvSerializerFormatters() for IMvcBuilder, you can chain the method invocation by:

services.AddControllers().AddCsvSerializerFormatters();

See AddCsvSerializerFormatters():

public static IMvcBuilder AddCsvSerializerFormatters(this IMvcBuilder builder)