NLog
4.5.0
NLog is a logging platform for .NET with rich log routing and management capabilities.
See the version list below for details.
Getting started with NLog
- Getting started for .NET
- Getting started for ASP.NET Core 2
- Getting started for .NET Core 2 Console application
- Getting started for ASP.NET Core 1 (csproj - vs2017)
- How to use structured logging
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
- Getting started for .NET
- Getting started for ASP.NET Core 2
- Getting started for .NET Core 2 Console application
- Getting started for ASP.NET Core 1 (csproj - vs2017)
- How to use structured logging
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
Dependencies
-
.NETFramework 3.5
- No dependencies.
-
.NETFramework 4.0 Client
- No dependencies.
-
.NETFramework 4.5
- No dependencies.
-
.NETStandard 1.3
- Microsoft.Extensions.PlatformAbstractions (>= 1.0.0)
- NETStandard.Library (>= 1.6.0)
- System.Collections.NonGeneric (>= 4.0.1)
- System.ComponentModel.Primitives (>= 4.1.0)
- System.Data.Common (>= 4.1.0)
- System.Diagnostics.StackTrace (>= 4.0.1)
- System.Net.NameResolution (>= 4.0.0)
- System.Net.Requests (>= 4.0.11)
- System.Reflection.TypeExtensions (>= 4.1.0)
- System.Xml.XmlDocument (>= 4.0.1)
-
.NETStandard 1.5
- NETStandard.Library (>= 1.6.0)
- System.ComponentModel.Primitives (>= 4.1.0)
- System.ComponentModel.TypeConverter (>= 4.1.0)
- System.Data.Common (>= 4.1.0)
- System.Diagnostics.Process (>= 4.1.0)
- System.Diagnostics.StackTrace (>= 4.0.1)
- System.Diagnostics.TraceSource (>= 4.0.0)
- System.IO.FileSystem.Watcher (>= 4.0.0)
- System.Net.NameResolution (>= 4.0.0)
- System.Net.Requests (>= 4.0.11)
- System.Reflection.TypeExtensions (>= 4.1.0)
- System.Runtime.Loader (>= 4.0.0)
- System.Threading.Thread (>= 4.0.0)
- System.Xml.XmlDocument (>= 4.0.1)
-
.NETStandard 2.0
- No dependencies.
-
MonoAndroid 4.4
- No dependencies.
-
Silverlight 4.0
- No dependencies.
-
Silverlight 5.0
- No dependencies.
-
WindowsPhone 8.0
- No dependencies.
-
Xamarin.iOS 1.0
- No dependencies.
Version History
Version | Downloads | Last updated | |
---|---|---|---|
4.6.0-rc1 | 1,331 | 2/8/2019 | |
4.5.11 | 626,729 | 11/6/2018 | |
4.5.10 | 849,534 | 9/17/2018 | |
4.5.9 | 312,916 | 8/24/2018 | |
4.5.8 | 489,752 | 8/5/2018 | |
4.5.7 | 255,141 | 7/19/2018 | |
4.5.6 | 741,205 | 5/29/2018 | |
4.5.5 | 153,841 | 5/25/2018 | |
4.5.4 | 586,159 | 5/5/2018 | |
4.5.3 | 338,924 | 4/16/2018 | |
4.5.2 | 319,988 | 4/6/2018 | |
4.5.1 | 73,971 | 4/3/2018 | |
4.5.0 | 505,626 | 3/25/2018 | |
4.4.13 | 257,172 | 2/27/2018 | |
4.4.12 | 2,073,995 | 8/8/2017 | |
4.4.11 | 632,741 | 6/17/2017 | |
4.4.10 | 191,493 | 5/31/2017 | |
4.4.9 | 418,838 | 5/5/2017 | |
4.4.8 | 68,859 | 4/28/2017 | |
4.4.7 | 50,946 | 4/25/2017 | |
4.4.6 | 134,033 | 4/15/2017 | |
4.4.5 | 213,184 | 3/28/2017 | |
4.4.4 | 214,931 | 3/10/2017 | |
4.4.3 | 322,568 | 2/17/2017 | |
4.4.2 | 177,077 | 2/6/2017 | |
4.4.1 | 483,040 | 12/24/2016 | |
4.4.0 | 151,651 | 12/14/2016 | |
4.3.11 | 485,856 | 11/7/2016 | |
4.3.10 | 320,881 | 10/11/2016 | |
4.3.9 | 264,460 | 9/18/2016 | |
4.3.8 | 314,078 | 9/5/2016 | |
4.3.7 | 315,325 | 8/6/2016 | |
4.3.6 | 155,314 | 7/23/2016 | |
4.3.5 | 461,817 | 6/12/2016 | |
4.3.4 | 360,510 | 5/16/2016 | |
4.3.3 | 155,067 | 4/28/2016 | |
4.3.2 | 47,094 | 4/26/2016 | |
4.3.1 | 63,869 | 4/20/2016 | |
4.3.0 | 44,589 | 4/16/2016 | |
4.2.3 | 760,067 | 12/20/2015 | |
4.2.2 | 136,225 | 12/2/2015 | |
4.2.1 | 91,546 | 11/21/2015 | |
4.2.0 | 201,931 | 10/24/2015 | |
4.1.2 | 373,125 | 9/20/2015 | |
4.1.1 | 59,878 | 9/12/2015 | |
4.1.0 | 103,549 | 8/31/2015 | |
4.0.1 | 407,744 | 6/18/2015 | |
4.0.0 | 269,887 | 6/9/2015 | |
3.2.1 | 344,103 | 4/24/2015 | |
3.2.0 | 723,554 | 1/2/2015 | |
3.1.0 | 752,738 | 6/24/2014 | |
3.0.0 | 118,431 | 6/2/2014 | |
2.1.0 | 652,784 | 10/10/2013 | |
2.0.1.2 | 409,021 | 4/8/2013 | |
2.0.0.2000 | 632,114 | 7/18/2011 | |
1.0.0.505 | 103,292 | 1/7/2011 |