NLog 4.5.0

NLog is a logging platform for .NET with rich log routing and management capabilities.

There is a newer version of this package available.
See the version list below for details.
Install-Package NLog -Version 4.5.0
dotnet add package NLog --version 4.5.0
<PackageReference Include="NLog" Version="4.5.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add NLog --version 4.5.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: NLog, 4.5.0"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install NLog as a Cake Addin
#addin nuget:?package=NLog&version=4.5.0

// Install NLog as a Cake Tool
#tool nuget:?package=NLog&version=4.5.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Getting started with NLog

Platform support

  • .NET Framework 3.5, 4, 4.5, 4.6 & 4.7
  • .NET Framework 4 client profile
  • Xamarin Android
  • Xamarin iOs
  • Windows Phone 8
  • Silverlight 4 and 5
  • Mono 4
  • ASP.NET 4 (NLog.Web package)
  • ASP.NET Core (NLog.Web.AspNetCore package)
  • .NET Core (NLog.Extensions.Logging package)
  • .NET Standard 1.3+
  • .NET Standard 2.x
  • UWP

See also Platform support

Troubleshooting

Getting started with NLog

Platform support

  • .NET Framework 3.5, 4, 4.5, 4.6 & 4.7
  • .NET Framework 4 client profile
  • Xamarin Android
  • Xamarin iOs
  • Windows Phone 8
  • Silverlight 4 and 5
  • Mono 4
  • ASP.NET 4 (NLog.Web package)
  • ASP.NET Core (NLog.Web.AspNetCore package)
  • .NET Core (NLog.Extensions.Logging package)
  • .NET Standard 1.3+
  • .NET Standard 2.x
  • UWP

See also Platform support

Troubleshooting

Release Notes

NLog 4.5 adds structured logging and .NET Standard support/UPW without breaking changes! Also a lot features has been added!


List of important changes in NLog 4.5

**Features:**

- Support for .Net Standard 2.0 [#2263] + [#2402] (@snakefoot)
- Support for .Net Standard 1.5 [#2341] (@snakefoot)
- Support for .Net Standard 1.3 (and UWP) [#2441] + [#2597] (Remember to manually flush on app suspend). (@snakefoot)
- Introduced Structured logging [#2208] + [#2262] + [#2244] + [#2544] (@snakefoot, @304NotModified, @jods4, @nblumhardt) - see https://github.com/NLog/NLog/wiki/How-to-use-structured-logging
- Json conversion also supports object properties [#2179],  [#2555] (@snakefoot, @304NotModified)
- event-properties layout-renderer can now render objects as json [#2241] (@snakefoot, @304NotModified)
- exception layout-renderer can now render exceptions as json [#2357] (@snakefoot)
- Default file archive logic is now easier to use [#1993] (@snakefoot)
- Introduced InstallationContext.ThrowExceptions [#2214] (@rbarillec)
- WebServiceTarget - Allow configuration of proxy address [#2375] (@snakefoot)
- WebServiceTarget - JsonPost with JsonLayout without being wrapped in parameter [#2590] (@snakefoot)
- ${guid}, added GeneratedFromLogEvent [#2226] (@snakefoot)
- TraceTarget RawWrite to always perform Trace.WriteLine independent of LogLevel [#1968] (@snakefoot)
- Adding OverflowAction options to BufferingTargetWrapper [#2276] (@mikegron)
- WhenRepeatedFilter - Filtering of identical LogEvents  [#2123] + [#2297] (@snakefoot)
- ${callsite} added CleanNamesOfAsyncContinuations option [#2292] (@tkhaugen, @304NotModified)
- ${ndlctiming} allows timing of ndlc-scopes [#2377] (@snakefoot)
- NLogViewerTarget - Enable override of the Logger-name [#2390] (@snakefoot)
- ${sequenceid} added [#2411] (@MikeFH)  
- Added "regex-matches" for filtering [#2437] (@MikeFH)
- ${gdc}, ${mdc} & {mdlc} - Support Format parameter [#2500] (@snakefoot)
- ${currentDir} added [#2491] (@UgurAldanmaz)
- ${AssemblyVersion}: add type (File, Assembly, Informational) option [#2487] (@alexangas)
- FileTarget: Support byte order mark [#2456] (@KYegres)
- TargetWithContext - Easier to create custom NLog targets with support for MDLC and NDLC [#2467] (@snakefoot)
- ${callname-filename} - Without line number [#2591] (@brunotag)
- MDC + MDLC with SetScoped property support  [#2592] (@MikeFH)
- LoggingConfiguration AddRule includes final-parameter [#2612] (@893949088)

**BugFixes:**
- Improve archive stability during concurrent file access [#1889] (@snakefoot)
- FallbackGroup could lose log events [#2265] (@frabar666)
- ${exception} - only include separator when items are available [#2257] (@jojosardez)
- LogFactory - Fixes broken EventArgs for ConfigurationChanged [#1897] (@snakefoot)
- Do not report wrapped targets as unused targets [#2290] (@thesmallbang)
- Added IIncludeContext, implemented missing properties [#2117] (@304NotModified)
- Improve logging of callsite linenumber for async-methods [#2386] (@snakefoot)
- NLogTraceListener - DisableFlush is enabled by default when AutoFlush=true [#2407] (@snakefoot)
- NLogViewer - Better defaults for connection limits [#2404] (@304NotModified)
- LoggingConfiguration.LoggingRules is not thread safe [#2393], [#2418]
- Fix XmlLoggingConfiguration reloading [#2475] (@snakefoot)
- Database Target now supports EntityFramework ConnectionStrings [#2510] (@Misiu, @snakefoot)
- LoggingConfiguration.RemoveTarget now works while actively logging [#2549] (@jojosardez, @snakefoot)
- FileTarget does not fail on platforms without global mutex support [#2604] (@snakefoot)
- LoggingConfiguration does not fail when AutoReload is not possible on the platforms without FileWatcher [#2603]  (@snakefoot)

**Performance:**
- More targets has OptimizeBufferReuse enabled by default [#1913] + [#1923] + [#1912] + [#1911] + [#1910] + [#1909] + [#1908] + [#1907] + [#2560]   (@snakefoot)
- StringBuilderPool - Improved Layout Render Performance by reusing StringBuilders [#2208]   (@snakefoot)
- JsonLayout - Improved Layout Performance, by optimizing use of StringBuilder [#2208]   (@snakefoot)
- FileTarget - Faster byte-encoding of log messsages, by using crude Encoding.GetMaxByteCount() instead of exact Encoding.GetByteCount() [#2208] (@snakefoot)
- Target - Precalculate Layout should ignore sub-layouts for complex layout (Ex Json) [#2378]  (@snakefoot)
- MessageLayoutRenderer - Skip `string.Format` allocation (for caching) when writing to a single target, instead format directly into output buffer. [#2507]  (@snakefoot)

for full list, see https://github.com/NLog/NLog/blob/master/CHANGELOG.md

for what is supported in each platform, see https://github.com/NLog/NLog/wiki/platform-support

NuGet packages (2.0K)

Showing the top 5 NuGet packages that depend on NLog:

Package Downloads
NLog.Extensions.Logging
NLog LoggerProvider for Microsoft.Extensions.Logging for logging in .NET Standard libraries and .NET Core applications. For ASP.NET Core, check: https://www.nuget.org/packages/NLog.Web.AspNetCore
NLog.Config
NLog.config file to get started with configuring NLog. This package is not mandatory to get started with NLog: the configuration file can created manually (read specs here: https://github.com/NLog/NLog/wiki/Configuration-file) or the configuration can be created programmatically. (read more here: https://github.com/NLog/NLog/wiki/Configuration-API) Note: Unfortunately this package won't work well when using <PackageReference> Advised to: - download manually: https://raw.githubusercontent.com/NLog/NLog/dev/src/NuGet/NLog.Config/content/NLog.config - set "Copy To Output Directory" to "Copy if newer"
Microsoft.ApplicationInsights.NLogTarget
Application Insights NLog Target is a custom target allowing you to send NLog log messages to Application Insights. Application Insights will collect your logs from multiple sources and provide rich powerful search capabilities. Privacy statement: https://go.microsoft.com/fwlink/?LinkId=512156
NLog.Web
NLog logging for ASP.NET and ASP.NET MVC. Includes targets and layout renderers for websites and web applications. This package is for ASP.NET 3.5+ For ASP.NET Core: Check https://www.nuget.org/packages/NLog.Web.AspNetCore
NLog.Extended
NLog.Extended.dll provides MSMQ target and AppSetting renderer

GitHub repositories (249)

Showing the top 5 popular GitHub repositories that depend on NLog:

Repository Stars
Wox-launcher/Wox
Launcher for Windows, an alternative to Alfred and Launchy.
files-community/Files
A modern file explorer that pushes the boundaries of the platform.
JustArchiNET/ArchiSteamFarm
C# application with primary purpose of idling Steam cards from multiple accounts simultaneously.
Sonarr/Sonarr
Smart PVR for newsgroup and bittorrent users.
Jackett/Jackett
API Support for your favorite torrent trackers

Version History

Version Downloads Last updated
4.7.9 369,772 3/24/2021
4.7.8 470,142 2/25/2021
4.7.7 615,172 1/20/2021
4.7.6 1,202,707 12/6/2020
4.7.5 1,740,316 9/27/2020
4.7.4 1,557,029 8/22/2020
4.7.3 624,789 7/31/2020
4.7.2 3,922,574 5/18/2020
4.7.1 62,602 5/15/2020
4.7.0 2,415,666 3/20/2020
4.6.8 7,615,936 11/4/2019
4.6.7 6,014,780 8/25/2019
4.6.6 1,744,567 7/14/2019
4.6.5 2,244,237 6/14/2019
4.6.4 1,750,331 5/28/2019
4.6.3 1,527,401 4/30/2019
4.6.2 1,202,379 4/2/2019
4.6.1 165,131 3/29/2019
4.6.0 523,939 3/21/2019
4.5.11 7,910,318 11/6/2018
4.5.10 3,770,398 9/17/2018
4.5.9 1,061,368 8/24/2018
4.5.8 1,480,701 8/5/2018
4.5.7 790,143 7/19/2018
4.5.6 2,140,593 5/29/2018
4.5.5 547,394 5/25/2018
4.5.4 1,871,336 5/5/2018
4.5.3 1,040,003 4/16/2018
4.5.2 719,841 4/6/2018
4.5.1 222,976 4/3/2018
4.5.0 3,349,234 3/25/2018
4.4.13 608,978 2/27/2018
4.4.12 4,918,535 8/8/2017
4.4.11 1,225,126 6/17/2017
4.4.10 308,072 5/31/2017
4.4.9 817,206 5/5/2017
4.4.8 128,582 4/28/2017
4.4.7 92,547 4/25/2017
4.4.6 266,876 4/15/2017
4.4.5 372,719 3/28/2017
4.4.4 444,802 3/10/2017
4.4.3 601,058 2/17/2017
4.4.2 317,866 2/6/2017
4.4.1 949,073 12/24/2016
4.4.0 245,350 12/14/2016
4.3.11 828,540 11/7/2016
4.3.10 564,164 10/11/2016
4.3.9 407,513 9/18/2016
4.3.8 533,470 9/5/2016
4.3.7 506,513 8/6/2016
4.3.6 229,931 7/23/2016
4.3.5 731,249 6/12/2016
4.3.4 629,760 5/16/2016
4.3.3 310,658 4/28/2016
4.3.2 76,499 4/26/2016
4.3.1 95,666 4/20/2016
4.3.0 108,544 4/16/2016
4.2.3 1,280,364 12/20/2015
4.2.2 241,015 12/2/2015
4.2.1 233,682 11/21/2015
4.2.0 333,703 10/24/2015
4.1.2 608,950 9/20/2015
4.1.1 125,408 9/12/2015
4.1.0 171,059 8/31/2015
4.0.1 633,067 6/18/2015
4.0.0 704,652 6/9/2015
3.2.1 675,439 4/24/2015
3.2.0 1,180,641 1/2/2015
3.1.0 1,207,212 6/24/2014
3.0.0 188,807 6/2/2014
2.1.0 1,110,259 10/10/2013
2.0.1.2 678,849 4/8/2013
2.0.0.2000 1,153,066 7/18/2011
1.0.0.505 250,762 1/7/2011
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