How to inject or use IConfiguration in Azure Function V3 with Dependency Injection when configuring a service

Question

Normally in a .NET Core project I would create a \'boostrap\' class to configure my service along with the DI registration commands. This is usually an extension method of

Answer 1

I´m using .net core 3.1

[assembly: FunctionsStartup(typeof(Startup))]
namespace xxxxx.Functions.Base
{
    [ExcludeFromCodeCoverage]
    public class Startup : FunctionsStartup
    {
        private static IConfiguration _configuration = null;

        public override void Configure(IFunctionsHostBuilder builder)
        {
            var serviceProvider = builder.Services.BuildServiceProvider();
            _configuration = serviceProvider.GetRequiredService();

            *** Now you can use _configuration["KEY"] in Startup.cs ***
        }