log at startup c# code example

Example 1: asp.net core logger in startup

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILogger<Startup> logger)
{
    logger.LogInformation("Configure called");

    // …
}

Example 2: appsettings in console application c#

using System;
using Microsoft.Extensions.Configuration;

namespace DiConsoleApp
{
    public class SomeService : ISomeService
    {
        IConfiguration configuration;

        public SomeService(IConfiguration configuration)
        {
            this.configuration = configuration;    
        }

        public void DoProcess()
        {
            var value = configuration["SomeKey"];
            Console.WriteLine("Value from the Config is: " + value);
        }
    }
}