.Net Quickstart

Expected reading time: 4 minutes

Download .Net Core 2.2

Download the .NET Core 2.2 SDK to try .NET Core on your Windows, macOS, or Linux machine. Visit dotnet/core if you prefer to use Docker containers.

All .NET Core versions are available at .NET Core Downloads if you're looking for another .NET Core version.

.Net Core 2.2

The latest version is .NET Core 2.2 New features include: framework-dependent deployments, startup hooks, AAD authentication with Azure SQL, and support for Windows ARM32.

Create your first application

After installing the .NET Core SDK, open a command prompt. Type the following dotnet commands to create and run a C# application.

dotnet new console

dotnet run

After installing the .NET Core SDK, open a command prompt. Type the following dotnet commands to create and run a C# application.

Hello World!

Install the package

The first step is to install the Logary package(s) from NuGet.

paket add logary --version ">= 5.0.0"

Or you're using NuGet/VS...

Install-Package Logary -Version 5.0.0-rc.10

Hello World (F#)

module Logary.ConsoleApp.Program

open System
open Hopac
open Logary
open Logary.Message
open Logary.Configuration
open Logary.Targets

let main argv =
  use mre = new System.Threading.ManualResetEventSlim(false)
  use sub = Console.CancelKeyPress.Subscribe (fun _ -> mre.Set())

  let logary =
    Config.create "Logary.ConsoleApp" "laptop"
    |> Config.target (LiterateConsole.create LiterateConsole.empty "console")
    |> Config.ilogger (ILogger.Console Debug)
    |> Config.build
    |> run

  let logger = logary.getLogger "Logary.HelloWorld"

  logger.info (eventX "Hello world")


Hello World (C#)

namespace Logary.CSharpExample
    using System;
    using System.Threading;
    using System.Threading.Tasks;
    using Configuration;
    using CSharp;
    using Targets;
    using Adapters.Facade;

    public static class Program
        public static Task<LogManager> StartLiterate()
            return LogaryFactory.New("Logary.CSharpExample","laptop",
                with => with.InternalLogger(ILogger.NewConsole(LogLevel.Debug))

        public static async Task SampleUsage(Logger logger)
            // without async
            logger.LogSimple(MessageModule.Event(LogLevel.Info, "User logged in"));
            // await placing the Hello World event in the buffer
            await logger.LogEvent(LogLevel.Debug, "Hello world. Important? {important}", new
                important = "yes"

            // await logging the fatal event and getting an ack back from each of the configured
            // targets
            await logger.LogEvent(LogLevel.Fatal, "Fatal application error on finaliser thread.", waitForAck: true);

            await logger.LogEvent(LogLevel.Verbose, "We need to log this with backpressure.", new
                tags = new[] { "tag1", "tag2" }

            // alternatively, you can use the ack-explicit functions together with the
            // data object model that's MessageModule.
            var message = MessageModule.Event(LogLevel.Warn, "Here be dragons!");
            await logger.LogWithAck(message);

            var val = logger.Time(() =>
                        for (int i = 0; i < 100; i++)

                        return 32;
                    }, "sample.config.computeAnswerToEverything")

            await logger.LogEventFormat(LogLevel.Warn,
                "{horses} is the answer to the universe and everything",

            await logger.Time(
                    () => logger.LogEvent(LogLevel.Debug, "I wonder how long this takes"))

                throw new ApplicationException("thing went haywire");
            catch (Exception e)
                await logger.LogEventFormat(LogLevel.Fatal, "Unhandled {exception}!", e);

        public static void SampleCibryyUsage(Cibryy.Logging.ILogger logger)

        public static int Main(string[] args)
            // normal console app boilerplate;
            var mre = new ManualResetEventSlim(false);
            System.Console.CancelKeyPress += (sender, arg) => mre.Set();

            var logary = StartLiterate().Result;
            // Usage with a library:
            var logger = logary.GetLogger("main");
            // Usage in this program:
            // Wait for CTRL+C
            return 0;