Added NLogBuilder and ASP.NET Core 2 example

NLog.Web.AspNetCore/AspNetExtensions.cs

@@ -50,7 +50,7 @@ public static LoggingConfiguration ConfigureNLog(this IHostingEnvironment env, s
         /// <summary>
         /// Apply NLog configuration from XML config.
         /// </summary>
-        /// <param name="fileName">absolute path  NLog configuration file.</param>
+        /// <param name="fileName">Path to NLog configuration file, e.g. nlog.config. </param>
         /// <returns>LoggingConfiguration for chaining</returns>
         private static LoggingConfiguration ConfigureNLog(string fileName)
         {
@@ -88,16 +88,20 @@ public static IWebHostBuilder UseNLog(this IWebHostBuilder builder, NLogAspNetCo
                 {
                     ServiceLocator.ServiceProvider = serviceProvider;
 
-                    //register yourself
-                    ConfigurationItemFactory.Default.RegisterItemsFromAssembly(typeof(AspNetExtensions).Assembly);
-
+                    NLogBuilder.RegisterNLogWebAspNetCore();
+
+                    LogManager.Configuration?.Reload();
                     return new NLogLoggerFactory(options);
+
                 });
+                //note: this one is called before  services.AddSingleton<ILoggerFactory>
                 if (options.RegisterHttpContextAccessor)
                 {
                     services.TryAddSingleton<IHttpContextAccessor, HttpContextAccessor>();
                 }
 
+
+
 
 
             });

NLog.Web.AspNetCore/NLog.Web.AspNetCore.csproj

@@ -29,6 +29,7 @@
     <GenerateAssemblyVersionAttribute>false</GenerateAssemblyVersionAttribute>
     <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
     <Version>4.4.1</Version>
+    <RootNamespace>NLog.Web</RootNamespace>
   </PropertyGroup>
 
   <ItemGroup>
@@ -55,6 +56,7 @@
     <PackageReference Include="Microsoft.AspNetCore.Http.Extensions" Version="2.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.Hosting.Abstractions" Version="2.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.Routing.Abstractions" Version="2.0.0" />
+    <PackageReference Include="NLog" Version="4.5.0-beta04" />
 
   </ItemGroup>
   <ItemGroup>

NLog.Web.AspNetCore/NLogAspNetCoreOptions.cs

@@ -4,7 +4,7 @@
 using System.Text;
 using NLog.Extensions.Logging;
 
-namespace NLog.Web.AspNetCore
+namespace NLog.Web
 {
     /// <summary>
     /// Options for ASP.NET Core and NLog

NLog.Web.AspNetCore/NLogBuilder.cs

@@ -0,0 +1,60 @@
+#if NETSTANDARD2_0
+
+
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+using NLog.Common;
+using NLog.Config;
+
+namespace NLog.Web
+{
+
+
+    /// <summary>
+    /// NLog helper for ASP.NET Standard 2
+    /// </summary>
+    public static class NLogBuilder
+    {
+        /// <summary>
+        /// Register NLog.Web.AspNetCore, so so &lt;extension&gt; in NLog's config isn't needed.
+        /// </summary>
+        internal static void RegisterNLogWebAspNetCore()
+        {
+            try
+            {
+                InternalLogger.Debug("Registering NLog.Web.AspNetCore");
+                ConfigurationItemFactory.Default.RegisterItemsFromAssembly(typeof(AspNetExtensions).GetTypeInfo().Assembly);
+            }
+            catch (Exception ex)
+            {
+                InternalLogger.Error(ex, "Registering NLog.Web.AspNetCore failed");
+            }
+
+        }
+
+        /// <summary>
+        /// Configure NLog
+        /// </summary>
+        /// <param name="fileName">Path to NLog configuration file, e.g. nlog.config. </param>>
+        /// <returns>LogFactory to get loggers, add events etc</returns>
+        public static LogFactory ConfigureNLog(string fileName)
+        {
+            RegisterNLogWebAspNetCore();
+            return ConfigureNLog(new XmlLoggingConfiguration(fileName));
+        }
+
+        /// <summary>
+        /// Configure NLog
+        /// </summary>
+        /// <param name="configuration"></param>
+        /// <returns>LogFactory to get loggers, add events etc</returns>
+        public static LogFactory ConfigureNLog(LoggingConfiguration configuration)
+        {
+            RegisterNLogWebAspNetCore();
+            LogManager.Configuration = configuration;
+            return LogManager.LogFactory;
+        }
+    }
+}
+#endif

NLog.Web.sln

@@ -1,6 +1,6 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.26403.7
+VisualStudioVersion = 15.0.26730.16
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{52CA242D-DB20-41D9-8B79-A5A965ECA105}"
 EndProject
@@ -12,6 +12,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "NLog.Web.AspNetCore", "NLog
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "NLog.Web.AspNetCore.Tests", "NLog.Web.AspNetCore.Tests\NLog.Web.AspNetCore.Tests.csproj", "{C02D4CED-0098-4526-BB95-6AB9D988036D}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ASP.NET Core 2 - VS2017", "examples\ASP.NET Core 2\Visual Studio 2017\ASP.NET Core 2 - VS2017\ASP.NET Core 2 - VS2017.csproj", "{D43A99EE-F27F-4552-9E23-C9686809AC3D}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Examples", "Examples", "{A9FB260C-9052-45D3-827A-20590F9D2FEF}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -34,6 +38,10 @@ Global
 		{C02D4CED-0098-4526-BB95-6AB9D988036D}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{C02D4CED-0098-4526-BB95-6AB9D988036D}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{C02D4CED-0098-4526-BB95-6AB9D988036D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D43A99EE-F27F-4552-9E23-C9686809AC3D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D43A99EE-F27F-4552-9E23-C9686809AC3D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D43A99EE-F27F-4552-9E23-C9686809AC3D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D43A99EE-F27F-4552-9E23-C9686809AC3D}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -43,5 +51,9 @@ Global
 		{E318FB41-9712-44CA-B792-E865EFE1A564} = {52CA242D-DB20-41D9-8B79-A5A965ECA105}
 		{9E3F7ECB-A6ED-422E-8429-F96C510F59CF} = {52CA242D-DB20-41D9-8B79-A5A965ECA105}
 		{C02D4CED-0098-4526-BB95-6AB9D988036D} = {52CA242D-DB20-41D9-8B79-A5A965ECA105}
+		{D43A99EE-F27F-4552-9E23-C9686809AC3D} = {A9FB260C-9052-45D3-827A-20590F9D2FEF}
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {B8468549-60D6-49AC-A6F7-44391E4C392C}
 	EndGlobalSection
 EndGlobal

examples/ASP.NET Core 2/Visual Studio 2017/ASP.NET Core 2 - VS2017/.bowerrc

@@ -0,0 +1,3 @@
+{
+  "directory": "wwwroot/lib"
+}

examples/ASP.NET Core 2/Visual Studio 2017/ASP.NET Core 2 - VS2017/ASP.NET Core 2 - VS2017.csproj

@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp2.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="2.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\NLog.Web.AspNetCore\NLog.Web.AspNetCore.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Content Update="NLog.config">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
+
+</Project>

examples/ASP.NET Core 2/Visual Studio 2017/ASP.NET Core 2 - VS2017/Controllers/HomeController.cs

@@ -0,0 +1,49 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using ASP.NET_Core_2___VS2017.Models;
+using Microsoft.Extensions.Logging;
+
+namespace ASP.NET_Core_2___VS2017.Controllers
+{
+    public class HomeController : Controller
+    {
+        private readonly ILogger<HomeController> _logger;
+
+        //NLog: inject logger
+        public HomeController(ILogger<HomeController> logger)
+        {
+
+            _logger = logger;
+        }
+
+        public IActionResult Index()
+        {
+            _logger.LogInformation("Hello, this is the index!");
+            return View();
+        }
+
+        public IActionResult About()
+        {
+            ViewData["Message"] = "Your application description page.";
+
+            return View();
+        }
+
+        public IActionResult Contact()
+        {
+            ViewData["Message"] = "Your contact page.";
+
+            return View();
+        }
+
+        public IActionResult Error()
+        {
+            _logger.LogError("Ow noos! an error");
+            return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
+        }
+    }
+}

examples/ASP.NET Core 2/Visual Studio 2017/ASP.NET Core 2 - VS2017/Models/ErrorViewModel.cs

@@ -0,0 +1,11 @@
+using System;
+
+namespace ASP.NET_Core_2___VS2017.Models
+{
+    public class ErrorViewModel
+    {
+        public string RequestId { get; set; }
+
+        public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
+    }
+}

examples/ASP.NET Core 2/Visual Studio 2017/ASP.NET Core 2 - VS2017/NLog.config

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
+      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+      autoReload="true"
+      internalLogLevel="info"
+      internalLogFile="c:\temp\internal-nlog.txt">
+
+
+  <!-- the targets to write to -->
+  <targets>
+    <!-- write logs to file  -->
+    <target xsi:type="File" name="allfile" fileName="c:\temp\nlog-all-${shortdate}.log"
+            layout="${longdate}|${event-properties:item=EventId.Id}|${uppercase:${level}}|${logger}|${message} ${exception}" />
+
+    <!-- another file log, only own logs. Uses some ASP.NET core renderers -->
+    <target xsi:type="File" name="ownFile-web" fileName="c:\temp\nlog-own-${shortdate}.log"
+            layout="${longdate}|${event-properties:item=EventId.Id}|${uppercase:${level}}|${logger}|${message} ${exception}|url: ${aspnet-request-url}|action: ${aspnet-mvc-action}" />
+
+    <!-- write to the void aka just remove -->
+    <target xsi:type="Null" name="blackhole" />
+  </targets>
+
+  <!-- rules to map from logger name to target -->
+  <rules>
+    <!--All logs, including from Microsoft-->
+    <logger name="*" minlevel="Trace" writeTo="allfile" />
+
+    <!--Skip Microsoft logs and so log only own logs-->
+    <logger name="Microsoft.*" minlevel="Trace" writeTo="blackhole" final="true" />
+    <logger name="*" minlevel="Trace" writeTo="ownFile-web" />
+  </rules>
+</nlog>

examples/ASP.NET Core 2/Visual Studio 2017/ASP.NET Core 2 - VS2017/Program.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Logging;
+using NLog;
+using NLog.Config;
+using NLog.Web;
+
+namespace ASP.NET_Core_2___VS2017
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            // NLog: setup the logger first to catch all errors
+            var logger = NLogBuilder.ConfigureNLog("NLog.config").GetCurrentClassLogger();
+            try
+            {
+                logger.Debug("init main");
+                BuildWebHost(args).Run();
+            }
+            catch (Exception e)
+            {
+                //NLog: catch setup errors
+                logger.Error(e, "Stopped program because of exception");
+                throw;
+            }
+        }
+
+        public static IWebHost BuildWebHost(string[] args) =>
+            WebHost.CreateDefaultBuilder(args)
+                .UseStartup<Startup>()
+                .UseNLog() // NLog: setup NLog for Dependency injection
+                .Build();
+    }
+}

examples/ASP.NET Core 2/Visual Studio 2017/ASP.NET Core 2 - VS2017/Properties/launchSettings.json

@@ -0,0 +1,27 @@
+{
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:56152/",
+      "sslPort": 0
+    }
+  },
+  "profiles": {
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "ASP.NET_Core_2___VS2017": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      },
+      "applicationUrl": "http://localhost:56153/"
+    }
+  }
+}