Showing posts with label NLOG. Show all posts
Showing posts with label NLOG. Show all posts

Friday, June 22, 2018

Dotnet Core console app with NLOG in Visual Studio Code

In this post I am going to create simple minimalistic dotnet core console application and integrate it with nlog.

Let's create a folder for our project. I am going to name it nlog_console.

$mkdir nlog_console
$cd nlog_console

Now we create dotnet core console app project and if you have Visual Studio Code installed run the second command below.

$dotnet new console
$code . &

Now lets add nlog package to a project.

$dotnet add package nlog

This will add the following code to our project file.

<PackageReference Include="nlog" Version="4.5.6" />

Nlog framework requires configuration file 'nlog.config' to specify logger tagerts and rules. We can copy paste the sample nlog.config file from this github page or use one below.

xml version="1.0" encoding="utf-8" ?>

<nlog xmlns=""
xsi:schemaLocation="NLog NLog.xsd"
internalLogLevel="Info" >


<target xsi:type="File" name="file"
layout="${date}|${level:uppercase=true}|${message} ${exception}|${logger}|${all-event-properties}" />
<target xsi:type="Console" name="console"
layout="${date}|${level:uppercase=true}|${message} ${exception}|${logger}|${all-event-properties}" />

<logger name="*" minlevel="Trace" writeTo="file,console" />


'nlog.config' file need to be copied to destination directory during project build. To achieve it add the code below to a project file.

<None Include="nlog.config" CopyToOutputDirectory="Always" />

Now we need to add actual logging code to a program. Copy paste the Program class code below.

using System;

namespace dotnetcore_nlog
class Program
private static NLog.Logger log = NLog.LogManager.GetCurrentClassLogger();
static void Main(string[] args)
Console.WriteLine("Hello World!");
log.Trace("Loggin trace.");

To build and run our console app run code below or add launch.json config to Visual Studio Code.

$dotnet build
$dotnet run

You should see the following output and log file created in the same directory as our console app.

2018/06/19 18:48:13.130|TRACE|Loggin trace. |nlog_console.Program|