NLog

Changelog:

• [#6225] AsyncTaskTarget - Fixed bug when using BatchSize=1 and doing explicit flush and next LogEvent fails. (@snakefoot)
• [#6206] MruCache - Changed to ConcurrentDictionary but still single writer. (@snakefoot)
• [#6205] TargetWithFilterChain - Increase CallSite MaxCapacity from 1000 to 2000. (@snakefoot)
• [#6197] JsonAttribute - New constructor with JsonLayout and Encode = false. (@snakefoot)
• [#6174] Reduce AOT file-size by changing PropertyTypeConverter to avoid Dictionary for conversion mapping. (@snakefoot)
• [#6177] Reduce AOT file-size by changing LogFactory PurgeObsoleteLoggers to clone Dictionary instead of ToList. (@snakefoot)
• [#6185] Reduce AOT file-size by changing to use yield instead of Linq. (@snakefoot)
• [#6188] Reduce AOT file-size by changing ConfigurationItemFactory from Dictionary to Array of PropertyInfo. (@snakefoot)
• [#6192] Reduce AOT file-size by changing Target FindAllLayouts to use HashSet instead of Linq Distinct. (@snakefoot)
• [#6193] Reduce AOT file-size by changing XmlLoggingConfiguration AutoReloadFileNames to use yield instead of Linq. (@snakefoot)
• [#6195] Reduce AOT file-size by changing LoggingConfiguration CheckUnusedTargets to use HashSet instead of Linq. (@snakefoot)
• [#6204] TemplateEnumerator - Replace LiteralHole with CurrentHole and CurrentLiteral. (@snakefoot)
• [#6223] XmlParser - ReadUntilChar avoid extra string-allocation on trim InnerText. (@snakefoot)
• [#6222] XmlParser - Simplify ReadUntilChar by extracting parse of attribute-name into ReadEntityName. (@snakefoot)
• [#6209] AppVeyor - Visual Studio 2026. (@snakefoot)
• [#6199] Fixed nullable warnings from Activator.CreateInstance. (@snakefoot)
• [#6190] SetupConfigurationTargetBuilder - Fix Sonar Code Smell. (@snakefoot)
• [#6176] TryNLogSpecificConversion - Refactor parsing Layout from string. (@snakefoot)
• [#6210] ScopeContext - Fix List capacity for GetAllNestedStates. (@jnyrup)
• [#6211] ScopeContext - Renamed PushNestedState to CollectNestedState. (@snakefoot)
• [#6214] ScopeContext - Rename CaptureNestedContext to CloneNestedContext. (@snakefoot)
• [#6216] ScopeContext - Simplify CaptureContextProperties when only nested state. (@snakefoot)
• [#6217] ScopeContext - Unify CollectNestedState implementation. (@snakefoot)

NLog v6.0 release notes: https://nlog-project.org/2025/04/29/nlog-6-0-major-changes.html

Full changelog: https://github.com/NLog/NLog/releases

For all config options and platform support, check https://nlog-project.org/config/

Changelog:

• [#6168] PropertiesDictionary - Preserve MessageTemplate property details when adding extra properties. (@snakefoot)
• [#6149] LoggingRule - Updating FinalMinLevel should also update MinLevel when same LogLevel. (@snakefoot)
• [#6165] AsyncTaskTarget - Retry with help from Task.Delay. (@snakefoot)
• [#6164] DateLayoutRenderer - UniversalTime = false should only convert to local when UTC. (@snakefoot)
• [#6138] SimpleLayout skip Precalculate when INoAllocationStringValueRenderer available. (@reabr)
• [#6158] TemplateEnumerator - Optimize ParseTextPart by direct calling IndexOfAny. (@snakefoot)
• [#6152] TemplateEnumerator - Optimize parsing of single digit holename. (@snakefoot)
• [#6142] InternalLogger - Skip allocating params array when no exception. (@snakefoot)
• [#6145] InternalLogger - Handle Exception ToString can throw with AOT. (@snakefoot)
• [#6154] ColoredConsoleTarget - Optimize Console Coloring for Word Highlight. (@snakefoot)
• [#6159] ColoredConsoleTarget - Reset capture of previous colors after ResetDefaultColors. (@snakefoot)
• [#6140] TryParseEnum - Apply Enum.TryParse since better for AOT. (@snakefoot)
• [#6143] Fixed various issues reported by EnableNETAnalyzers. (@snakefoot)

NLog v6.0 release notes: https://nlog-project.org/2025/04/29/nlog-6-0-major-changes.html

Full changelog: https://github.com/NLog/NLog/releases

For all config options and platform support, check https://nlog-project.org/config/

Changelog:

• [#6116] PropertyTypeConverter - Prioritize IFormattable ToString when Format specified. (@snakefoot)
• [#6129] GZipFile - Support Header / Footer / WriteBom. (@snakefoot)
• [#6113] FileTarget - Upfront validation of ArchiveSuffixFormat property. (@snakefoot)
• [#6110] FileTarget - Improve repair of legacy ArchiveFileName. (@snakefoot)
• [#6107] LoggingRule - Added WriteTo method to match NLog.config. (@snakefoot)
• [#6106] LoggingRule - Added MinLevel property to match NLog.config. (@snakefoot)
• [#6118] LoggingRule - Update FinalMinLevel to match NLog.config. (@snakefoot)
• [#6123] Layout.IsNullOrEmpty similar to string.IsNullOrEmpty. (@snakefoot)
• [#6119] TargetPropertyWithContext - Added alias Value for Layout. (@snakefoot)
• [#6119] TargetPropertyWithContext - ToString returns Name and Value. (@snakefoot)
• [#6105] MessageTemplateParameters - Reduce code complexity. (@snakefoot)
• [#6131] + [#6133] Refactor NLog source code to fix nullable warnings. (@snakefoot)

NLog v6.0 release notes: https://nlog-project.org/2025/04/29/nlog-6-0-major-changes.html

Full changelog: https://github.com/NLog/NLog/releases

For all config options and platform support, check https://nlog-project.org/config/

Changelog:

• [#6101] LogFactory - Flush / FlushAsync asynchronous completion outside Target lock. (@snakefoot)
• [#6100] NLog.Targets.AtomicFile supporting NetStandard2 with Win32 API. (@michailf)
• [#6094] XmlLayout - Faster XML encoding with INoAllocationStringValueRenderer. (@snakefoot)
• [#6091] LiteralWithRawValueLayoutRenderer - Only support RawValue when possible. (@snakefoot)
• [#6088] CachedLayoutRendererWrapper - Allow literal optimization when caching not needed. (@snakefoot)

NLog v6.0 release notes: https://nlog-project.org/2025/04/29/nlog-6-0-major-changes.html

Full changelog: https://github.com/NLog/NLog/releases

For all config options and platform support, check https://nlog-project.org/config/

Changelog:

• [#5999] JsonLayout - Added support for DottedRecursion. (@thatrajeevkr)
• [#6084] JsonLayout - Protect against cyclic object graphs when DottedRecursion. (@snakefoot)
• [#6075] DebuggerTarget - Add support for MaxMessageSize and OnOverflow-action. (@snakefoot)
• [#6070] InternalLogger - Auto enable LogLevel.Info when activated. (@snakefoot)
• [#6045] LoggingConfigurationParser - Report unrecognized options in targets and rules section. (@snakefoot)
• [#6059] LogEventBuilder - Properties with IReadOnlyCollection for initialCapacity. (@snakefoot)
• [#6065] FileTarget - Adjust ArchiveSuffixFormat to better handle legacy ArchiveFileName. (@snakefoot)
• [#6079] FileTarget - Replace Environment.TickCount with LogEventInfo.TimeStamp. (@snakefoot)
• [#6066] FileTarget - Simplify FileName natural ordering logic. (@snakefoot)
• [#6069] FileTarget - Reduce code complexity for NaturalStringComparer. (@snakefoot)
• [#6064] FileTarget - Reduce code complexity for ArchiveNumbering property. (@snakefoot)
• [#6082] JsonLayout - Faster Json encoding with INoAllocationStringValueRenderer. (@snakefoot)
• [#6083] CsvLayout - Faster CSV encoding with INoAllocationStringValueRenderer. (@snakefoot)
• [#6081] DefaultJsonSerializer - Reduce overhead of PerformJsonEscapeWhenNeeded. (@snakefoot)
• [#6025] LogEventInfo - Changed LayoutCache from dictionary to linked list. (@snakefoot)
• [#6049] PropertiesDictionary - Increase initial capacity when insert. (@snakefoot)
• [#6061] PropertiesDictionary - Simplify enumerator when mixing property types. (@snakefoot)
• [#6074] WhenEmpty - Optimize when IsFixedText. (@snakefoot)
• [#6062] BufferingTargetWrapper - Improve InternalLogger output when WrappedTarget is NULL. (@snakefoot)
• [#6067] Fix nullable warnings from NET10 annotations. (@snakefoot)
• [#6068] Support nullable where TKey : notnull for dictionary. (@snakefoot)
• [#6071] AssemblyExtensionTypes - Reduce code complexity. (@snakefoot)
• [#6072] LoggingConfigurationFileLoader - Handle unknown type loading for App.config. (@snakefoot)
• [#6076] Marked ConversionHelpers.TryParseEnum as obsolete. (@snakefoot)
• [#5949] CallSiteLayoutRenderer - Obsoleted CleanNamesOfAnonymousDelegates + CleanNamesOfAsyncContinuation. (@snakefoot)

NLog v6.0 release notes: https://nlog-project.org/2025/04/29/nlog-6-0-major-changes.html

Full changelog: https://github.com/NLog/NLog/releases

For all config options and platform support, check https://nlog-project.org/config/

Changelog:

• [#6056] FileTarget - Archive Cleanup sort filenames using natural ordering. (@snakefoot)
• [#6054] EventProperties - Format Dictionary Properties correctly. (@snakefoot)
• [#6051] Failure to create config item should be reported as InternalLogger Error. (@snakefoot)
• [#6052] PropertiesDictionary - Faster TryGetValue without IsEmpty. (@snakefoot)
• [#6048] PropertiesDictionary - Increase initial capacity when insert. (@snakefoot)
• [#6047] LogEventInfo - Minor optimization of HasImmutableProperties. (@snakefoot)
• [#6057] WhenEmpty - Support AppDomainFixedOutput optimization. (@snakefoot)
• [#6053] JsonAttribute - Reduce code complexity when Encode = false. (@snakefoot)
• [#6044] Target also enforce PreventMultipleCalls when WriteFailedNotInitialized. (@snakefoot)
• [#6042] NLog.RegEx - Fixed Wiki-link in nuget-package. (@snakefoot)

NLog v6.0 release notes: https://nlog-project.org/2025/04/29/nlog-6-0-major-changes.html

Full changelog: https://github.com/NLog/NLog/releases

For all config options and platform support, check https://nlog-project.org/config/

Changelog:

• [#6027] FileTarget - Improve archive cleanup when using ArchiveSuffixFormat with datetime. (@snakefoot)
• [#6028] FileTarget - Fix archive cleanup when only single old file and using MaxArchiveDays. (@snakefoot)
• [#6039] FileTarget - Render ArchiveFileName using NLog DefaultCultureInfo. (@snakefoot)
• [#6030] ObjectReflectionCache - Improve handling of JObject serialization. (@snakefoot)
• [#6026] JsonLayout - Reduce code complexity for rendering JsonAttribute. (@snakefoot)
• [#6036] NullTarget - Improve thread concurrency when FormatMessage = false. (@snakefoot)
• [#6023] MemoryTarget - Apply MaxLogsCount update on next LogEvent. (@snakefoot)
• [#6040] XmlParser - Refactor to reduce code complexity. (@snakefoot)
• [#6041] ScopeContextAsyncState - Refactor to reduce code complexity. (@snakefoot)

NLog v6.0 release notes: https://nlog-project.org/2025/04/29/nlog-6-0-major-changes.html

Full changelog: https://github.com/NLog/NLog/releases

For all config options and platform support, check https://nlog-project.org/config/

Changelog:

• [#5998] FileTarget - Rolling to next directory should not fail. (@snakefoot)
• [#6013] ValueFormatter - Skip quotes for CaptureType.Stringify unless legacy mode. (@snakefoot)
• [#6007] ColoredConsoleTarget - Use Span to reduce string-allocation for word-highlighting. (@snakefoot)
• [#6009] NullTarget - Avoid string-allocation upfront when FormatMessage = true. (@snakefoot)
• [#6012] XmlLoggingConfiguration - Reduce output for InternalLogger Info-Level. (@snakefoot)
• [#6006] XmlLoggingConfiguration - Protect against double dispose of AutoReloadConfigFileWatcher. (@snakefoot)
• [#6008] LoggerImpl - Merge WriteToTargetWithFilterChain into Write. (@snakefoot)
• [#6010] LoggingConfiguration - Redirect AddRuleForOneLevel and AddRuleForAllLevels to AddRule. (@snakefoot)
• [#6011] LoggingRule - Align EnableLoggingForLevels to skip when minLevel is LogLevel.Off. (@snakefoot)
• [#6015] CompoundLayout - Changed to foreach for better release optimizations. (@snakefoot)
• [#6016] CsvLayout - Changed to foreach for better release optimizations. (@snakefoot)
• [#6017] JsonArrayLayout - Changed to foreach for better release optimizations. (@snakefoot)
• [#6018] XmlLayout - Changed to foreach for better release optimizations. (@snakefoot)

NLog v6.0 release notes: https://nlog-project.org/2025/04/29/nlog-6-0-major-changes.html

Full changelog: https://github.com/NLog/NLog/releases

For all config options and platform support, check https://nlog-project.org/config/

Improvements

• #5979 FileTarget - Improve file-wildcard for archive cleanup. (@snakefoot)
• #5980 FileTarget - Extend InternalLogger output with archive cleanup reason. (@snakefoot)
• #5981 FileTarget - Strict wildcard check only possible when single wildcard. (@snakefoot)
• #5987 FileTarget - Improve archive cleanup with dynamic seq-no. (@snakefoot)
• #5988 FileTarget - Avoid parsing archive sequence number when other digits. (@snakefoot)
• #5996 FileTarget - Improve fallback logic when missing file system birthtime. (@snakefoot)
• #5964 ColoredConsoleTarget - WholeWords should only highlight the word. (@snakefoot)
• #5967 ColoredConsoleTarget - Fixed boxing issue in ConsoleRowHighlightingRule. (@karpinsn)
• #5968 Simplify WithAutoFlush-method for fluent config API. (@snakefoot)
• #5970 Fix boxing for registration of builtin condition methods. (@snakefoot)
• #5977 ConditionExpression - Implicit operator with NotNullIfNotNull-attribute. (@GREsau)
• #5982 SimpleLayout - Implicit operator with NotNullIfNotNull-attribute. (@snakefoot)
• #5992 MessageLayoutRenderer - Handle Exception.ToString() can throw with AOT. (@snakefoot)
• #5983 Append4DigitsZeroPadded - Use Span instead of multiple StringBuilder.Append(). (@snakefoot)
• #5985 Extracted NLog.WindowsRegistry to own git repository. (@snakefoot)
• #5985 Extracted NLog.Targets.Trace to own git repository. (@snakefoot)
• #5985 Extracted NLog.Targets.ConcurrentFile to own git repository. (@snakefoot)
• #5985 Extracted NLog.Targets.Database to own git repository. (@snakefoot)
• #5985 Extracted NLog.Targets.Mail to own git repository. (@snakefoot)
• #5985 Extracted NLog.Targets.WebService to own git repository. (@snakefoot)
• #5985 Extracted NLog.Targets.Network to own git repository. (@snakefoot)

Improvements

• #5952 FileTarget - Close old files when reaching OpenFileCacheSize. (@snakefoot)
• #5948 FileTarget - Closing on OpenFileCacheTimeout apply least recently used. (@snakefoot)
• #5947 FileTarget - Improved file-archive exception handling when KeepFileOpen=false. (@snakefoot)
• #5954 ColoredConsoleTarget - Added Words-property for easy highlighting of many words without RegEx. (@snakefoot)
• #5955 LogMessageTemplateFormatter - Also use IValueFormatter for positional templates. (@snakefoot)
• #5953 NLog.Targets.Network - Updated links in README.md for nuget-package. (@snakefoot)
• #5945 NLog.Targets.AtomicFile - Added README.md for nuget-package. (@snakefoot)
• #5940 SplunkTarget - Support SplunkFields-property. (@snakefoot)

Improvements

• #5930 XmlParser - Handle XML comments after root-end-tag. (@snakefoot)
• #5929 XmlLoggingConfiguration - Improve handling of invalid XML. (@snakefoot)
• #5933 Handle invalid message template when skipping parameters array. (@snakefoot)
• #5915 ReplaceNewLinesLayoutRendererWrapper - Replace more line ending characters. (@oikku)
• #5911 NLog.Targets.GZipFile - Improve support for ArchiveAboveSize. (@snakefoot)
• #5921 FileTarget - Activate legacy ArchiveFileName when ArchiveSuffixFormat contains legacy placeholder. (@snakefoot)
• #5924 AsyncTargetWrapper - Updated FullBatchSizeWriteLimit default value from 5 to 10. (@snakefoot)
• #5937 Mark Assembly loading with RequiresUnreferencedCodeAttribute for AOT. (@snakefoot)
• #5938 Logger - Align WriteToTargets with WriteToTargetsWithSpan. (@snakefoot)
• #5909 ConfigurationItemFactory - Added extension hints for webservice and activityid. (@snakefoot)
• #5918 Log4JXmlTarget - Removed alias NLogViewer as conflicts with other nuget-packages. (@snakefoot)
• #5926 SplunkTarget - NetworkTarget with SplunkLayout. (@snakefoot)
• #5927 GelfLayout - Align with SplunkLayout. (@snakefoot)
• #5913 NLog.Targets.Network - Updated nuget-package README.md. (@snakefoot)
• #5912 NLog.Targets.Trace - Updated nuget-package README.md. (@snakefoot)
• #5919 XML docs for Targets and Layouts with remarks about default value. (@snakefoot)
• #5922 XML docs for LayoutRenderers with remarks about default value. (@snakefoot)
• #5925 XML docs for Target Wrappers with remarks about default value. (@snakefoot)
• #5935 Improve NLog XSD Schema with better handling of typed Layout. (@snakefoot)
• #5923 Updated unit-tests from NET6 to NET8. (@snakefoot)

Improvements

• #5898 Changed ConditionExpression to be nullable by default since no Condition means no filtering. (@snakefoot)
• #5906 Include ConditionExpression in the static type registration. (@snakefoot)
• #5895 Fixed the new XML parser to handle XML comments just before end-tag. (@snakefoot)
• #5905 Fixed the new XML parser to allow InnerText with greater-than characters. (@snakefoot)
• #5891 Updated NLog.Targets.AtomicFile to support net8.0-windows without dependency on Mono.Posix.NETStandard. (@snakefoot)

Improvements

• #5858 ConsoleTarget - Added ForceWriteLine to match NLog v6 Schema (#5858) (@snakefoot)
• #5866 Layout.FromLiteral to match NLog v6 (#5866) (@snakefoot)
• #5888 ChainsawTarget with type-alias Log4JXml to match NLog v6 (#5888) (@snakefoot)
• #5883 AsyncTargetWrapper - LogEventDropped and EventQueueGrow events fixes (#5883) (@dance)
• #5890 StringBuilderExt - Change Append2DigitsZeroPadded to array-lookup (#5890) (@snakefoot)
• #5936 XmlLayout - Support MaxRecursionLimit == 0 (#5936) (@snakefoot)
• #5936 RegisterObjectTransformation so build trimming will keep public properties (#5936) (@snakefoot)

Improvements

• #5572 Layout.FromMethod that supports typed Layout (#5572) (@smnsht)
• #5580 Layout.FromMethod that supports typed Layout (without boxing) (#5580) (@snakefoot)
• #5570 ScopeContextPropertyEnumerator - Optimize HasUniqueCollectionKeys (#5570) (@snakefoot)
• #5571 XmlLayout - Fixed bug in handling unsafe xml property names (#5571) (@snakefoot)
• #5573 FuncThreadAgnosticLayoutRenderer - Implement IRawValue (#5573) (@snakefoot)
• #5577 Introduced OnConfigurationAssigned to signal activation of LoggingConfiguration (#5577) (@snakefoot)
• #5578 Update copyright to 2024, and removed trailing white spaces in source code (#5578) (@snakefoot)
• #5585 Fixed various issues reported by EnableNETAnalyzers (#5585) (@snakefoot)
• #5587 NetworkTarget - Added SendTimeoutSeconds to assign TCP Socket SendTimeout (#5587) (@snakefoot)
• #5588 DateLayoutRenderer - Optimize for Round Trip ISO 8601 Date Format = o (#5588) (@snakefoot)
• #5589 LayoutRenderer - Changed Render-method to use StringBuilderPool (#5589) (@snakefoot)
• #5599 JsonLayout - Refactor code to simplify rendering of scope properties (#5599) (@snakefoot)
• #5600 JsonLayout - Precalculate Json-Document delimiters upfront (#5600) (@snakefoot)

Improvements

• #5548 FileTarget - Reset reusable MemoryStream when above max capacity (#5548) (@RomanSoloweow)
• #5568 ThreadIdLayoutRenderer - Added IStringValueRenderer optimization (#5568) (@snakefoot)
• #5567 PropertiesDictionary - Simplify PropertyDictionaryEnumerator MoveNext (#5567) (@snakefoot)
• #5566 PropertiesDictionary - Added PropertyDictionaryEnumerator to enumerate without allocation (#5566) (@snakefoot)
• #5562 TargetWithContext - Skip caching when render value for ContextProperties (#5562) (@snakefoot)
• #5557 SimpleLayout - Refactor to reduce code complexity (#5557) (@snakefoot)
• #5556 DatabaseTarget - CloseConnection even when ThrowExceptions = true (#5556) (@snakefoot)
• #5553 LoggerNameMatcher private classes marked as sealed (#5553) (@snakefoot)
• #5554 LoggingConfigurationParser - Refactor to reduce code complexity (#5554) (@snakefoot)
• #5551 LoggingConfigurationParser - Refactor to reduce code complexity (#5551) (@snakefoot)
• #5550 FileArchiveModeRolling - Refactor to reduce code complexity (#5550) (@snakefoot)
• #5542 LimitingTargetWrapper - Fix wiki-link in XML docs (#5542) (@snakefoot)
• #5541 FileTarget - Improve internal logging when invalid FileName (#5541) (@snakefoot)
• #5540 WhenRepeatedFilter - Added wiki-link in XML docs (#5540) (@snakefoot)
• #5536 RegEx IsMatch is faster with RegexOptions.ExplicitCapture to skip capture (#5536) (@snakefoot)
• #5535 PropertyTypeConverter - Use Type IsAssignableFrom instead of Equals (#5535) (@snakefoot)
• #5527 StackTraceUsageUtils - Refactor to reduce code complexity (#5527) (@snakefoot)
• #5526 AsyncRequestQueue - Premature optimization of Enqueue (#5526) (@snakefoot)
• #5525 JsonLayout - Refactor to reduce code complexity (#5525) (@snakefoot)
• #5524 XmlLayout - Refactor to reduce code complexity (#5524) (@snakefoot)
• #5523 AsyncTaskTarget - Added more logging to diagnose batching logic (#5523) (@snakefoot)
• #5522 Layout will always initializes nested layouts (#5522) (@snakefoot)
• #5519 NLogTraceListener - Reduce boxing of EventType + EventId properties (#5519) (@snakefoot)

Bug fix

• #5515 Fix NullReferenceException when using LoggingRules with filters and no targets (#5515) (@snakefoot)

Improvements

• #5313 CallSite can hide single class type using AddCallSiteHiddenClassType (#5313) (@wadebaird)
• #5489 Logging Rule with FinalMinLevel also supports dynamic filters (#5489) (@snakefoot)
• #5463 LogManager GetCurrentClassLogger fallback to assembly-name when no namespace (#5463) (@snakefoot)
• #5480 Logger LayoutRenderer able to output the Logger PrefixName (#5480) (@snakefoot)
• #5466 NLogViewer Target - Allow override of the FormattedMessage (#5466) (@snakefoot)
• #5487 CallSite fallback to Exception TargetSite when available (#5487) (@snakefoot)
• #5242 NLogTraceListener - Align Filter-behavior for all Write-methods (#5242) (@snakefoot)
• #5490 LogManager AddHiddenAssembly marked obsolete, instead use AddCallSiteHiddenAssembly (#5490) (@snakefoot)
• #5443 InternalLogger - Marked LogToTrace as obsolete to reduce dependencies (#5443) (@snakefoot)
• #5297 Replaced MutableUnsafeAttribute with ThreadAgnosticImmutableAttribute (#5297) (@snakefoot)
• #5431 Marked ILoggerBase and ISuppress as obsolete and instead use ILogger (#5431) (@snakefoot)
• #5491 LoggingRule - Marked ChildRules as obsolete (#5491) (@snakefoot)
• #5416 FileTarget - Marked NetworkWrites as obsolete, and replaced by KeepFileOpen=false (#5416) (@snakefoot)
• #5355 Marked EscapeDataNLogLegacy as obsolete (#5355) (@snakefoot)
• #5380 WrapperTarget is the wrapper and not the wrapped (#5380) (@snakefoot)
• #5485 LogFactory - Disconnect from Target write and Target flush (#5485) (@snakefoot)
• #5509 NLog Schema nuget-package with updated license info (#5509) (@snakefoot)
• #5493 Added sealed to internal classes (#5493) (@snakefoot)
• #5497 Added more NLog Wiki Links to XML docs (#5497) (@snakefoot)
• #5475 CsvLayout - Fixed links to NLog Wiki in XML docs (#5475) (@hangy)

Improvements

• #5450 ConfigurationItemFactory - Skip type attribute lookup for official types (#5450) (@snakefoot)
• #5441 LoggingRule - ToString should recognize Final and FinalMinLevel (#5441) (@snakefoot)
• #5438 FileTarget - Refactor Windows FileSystem Tunneling repair logic (#5438) (@snakefoot)
• #5432 Hide obsolete methods and classes from intellisense (#5432) (@snakefoot)
• #5429 CachedTimeSource - Added Thread.MemoryBarrier to avoid code-reordering (#5429) (@snakefoot)

Improvements

• #5427 FileTarget - Fix Windows FileSystem Tunneling when KeepFileOpen=false (#5427) (@snakefoot)
• #5422 AppEnvironmentWrapper - Added Entry-Assembly as fallback for ProcessName (#5422) (@snakefoot)
• #5419 Improved XML docs for MDC, MDLC, NDC, NDLC about being replaced by ScopeContext (#5419) (@snakefoot)

Improvements

• #5407 FileTarget - Added option WriteHeaderWhenInitialFileNotEmpty (#5407) (@RomanSoloweow)
• #5381 FileTarget - Removed explicit File.Create to not trigger file-scanners (#5381) (@snakefoot)
• #5382 FileTarget - SetCreationTimeUtc only when IsArchivingEnabled (#5382) (@snakefoot)
• #5384 FileTarget - SetCreationTimeUtc always when running on Windows (#5384) (@snakefoot)
• #5389 ColoredConsoleTarget - Added Setup-extension-method WriteToColoredConsole (#5389) (@snakefoot)
• #5409 MemoryTarget - Make Logs-property thread-safe to enumerate (#5409) (@snakefoot)
• #5413 MultiFileWatcher - Improve InternalLogger output to match on start and stop (#5413) (@snakefoot)
• #5398 Marked obsolete members with EditorBrowsableState.Never (#5398) (@snakefoot)
• #5412 Change TargetFrameworks to net461 when old VisualStudioVersion (#5412) (@snakefoot)

Improvements

• #5344 ConcurrentRequestQueue - Reduced SpinCount to 15, before monitor wait (#5344) (@snakefoot)
• #5347 ConfigurationItemFactory - Improve exception message when unknown type-alias (#5347) (@snakefoot)
• #5348 ConfigurationItemFactory - Faster scanning of relevant configuration item types (#5348) (@snakefoot)
• #5349 FileTarget - Verify FilePathLayout not containing unexpected characters (#5349) (@snakefoot)
• #5351 LogManager.ReconfigExistingLoggers with reduced memory allocation (#5351) (@snakefoot)
• #5353 CsvLayout - Improve XML docs for CustomColumnDelimiter (#5353) (@snakefoot)
• #5354 LogEventInfo - Can be immutable when having FormattedMessage and no parameters (#5354) (@snakefoot)
• #5356 Renamed internal NLogXmlElement to XmlLoggingConfigurationElement and fixed XML docs (#5356) (@snakefoot)
• #5359 StringHelpers - Skip SubString for case-insensitive Replace-method (#5359) (@snakefoot)
• #5360 ReplaceLayoutRendererWrapper - IgnoreCase faster without RegEx (#5360) (@snakefoot)
• #5363 Improved InternalLogger output when parsing NLog config with target wrappers (#5363) (@snakefoot)
• #5370 NetworkTarget - Skip connection when above max message size (#5370) (@snakefoot)
• #5371 Fixed various issues reported by EnableNETAnalyzers (#5371) (@snakefoot)
• #5372 Updated various nuget-packages to include README.md (#5372) (@snakefoot)

Improvements

• #5316 ObjectPath should only render output when finding property-value (#5316) (@snakefoot)
• #5318 Typed Layout parses empty string as fixed null value when nullable (#5318) (@snakefoot)
• #5319 Introduced new LogEventInfo-constructor to skip Parameters-array allocation (#5319) (@snakefoot)
• #5321 ConfigurationItemFactory - Improve obsolete message for JsonConverter + ValueFormatter (#5321) (@snakefoot)
• #5326 InternalLogger - Force output even when invalid format string (#5326) (@snakefoot)
• #5327 NetworkTarget - Avoid unhandled exception when using ThrowExceptions=true (#5327) (@snakefoot)
• #5336 Skip checking ExcludeProperties when empty, to avoid string GetHashCode (#5336) (@snakefoot)
• #5337 JsonLayout optimizing thread context capture for inner layouts (#5337) (@snakefoot)
• #5310 FileTarget - FilePathLayout with fixed-filename can translate to absolute path (#5310) (@snakefoot)

Improvements

• #5308 AutoFlushTargetWrapper - Explicit flush should also await when FlushOnConditionOnly (#5308) (@snakefoot)
• #5301 Target precalculate should only perform single IsInitialized check (#5301) (@snakefoot)
• #5300 Target precalculate should only consider relevant layouts (#5300) (@snakefoot)
• #5296 Target precalculate should handle duplicate layouts (#5296) (@snakefoot)
• #5299 MessageLayoutRenderer - Skip Flatten when simple AggregateException (#5299) (@snakefoot)
• #5298 ConfigurationItemFactory - Improve obsolete message for obsoleted factory-properties (#5298) (@snakefoot)
• #5291 Report NLog version on initial configuration assignment (#5291) (@snakefoot)
• #5290 PropertyHelper - SetPropertyFromString allow empty string for nullable-value (#5290) (@snakefoot)
• #5289 Check RequiredParameter should also validate nullable types (#5289) (@snakefoot)
• #5287 FileTarget - FilePathLayout with fixed-filename can translate to absolute path (#5287) (@snakefoot)
• #5279 FileTarget - Cleanup FileSystemWatcher correctly when ArchiveFilePatternToWatch changes (#5279) (@lavige777)
• #5281 Refactor ConditionBasedFilter when-filter to use ternary operator (#5281) (@jokoyoski)

Improvements

• #5276 ConfigurationItemFactory - Fix NullReferenceException when skipping already loaded assembly (#5276) (@snakefoot)

Improvements

• #5191 WrapperTarget - Derive Name from wrappedTarget (#5248) (@snakefoot)
• #5249 Updated obsolete warning for ConfigurationReloaded-event (#5249) (@snakefoot)
• #5251 ConfigurationItemFactory - Notify when using reflection to resolve type (#5251) (@snakefoot)
• #5253 LoggingConfigurationParser - Create list items without using reflection (#5253) (@snakefoot)
• #5254 ConfigurationItemFactory - Include ConditionExpression in registration (#5254) (@snakefoot)
• #5255 LogFactory - Obsoleted GetLogger should not throw exceptions when invalid logger-type (#5255) (@snakefoot)
• #5257 ConfigurationItemFactory - Skip assembly-loading should also check prefix-option (#5257) (@snakefoot)
• #5263 ConfigurationItemFactory - Logging assembly-prefix when loading assembly (#5263) (@snakefoot)
• #5266 ILogger - Remove irrelevant StructuredMessageTemplateAttribute (#5266) (@saltukkos)
• #5267 ILogger - Updated obsolete warning for ErrorException-method and friends (#5267) (@snakefoot)
• #5269 LoggingConfigurationParser - TryGetEnumValue should throw when invalid string-value (#5269) (@snakefoot)
• #5268 ConfigurationItemFactory - Include ConditionMethods in registration (#5268) (@snakefoot)
• #5273 TargetWithContext - Fix InternalLogger output about Object reflection needed (#5273) (@snakefoot)

Improvements

• #5229 TargetWithContext - Fixed ScopeContext capture when multiple wrappers (#5229) (@snakefoot)
• #5227 DefaultJsonSerializer - Cache length when validating json encoding (#5227) (@snakefoot)
• #5220 FileTarget - Suppress exceptions from retrieving FileInfo.CreationTimeUtc (#5220) (@snakefoot)
• #5219 LoggingConfigurationParser - Handle adding Target without name (#5219) (@snakefoot)
• #5215 Log4jXmlEvent - Fixed removal of invalid XML chars (#5215) (@snakefoot)
• #5210 LoggingConfiguration - Expand NLog config variables for Logging Rules WriteTo (#5210) (@snakefoot)

Improvements

• #5207 FileTarget - Recover from file-deleted when same archive-folder (#5207) (@snakefoot)
• #5201 NLog.xsd schema with support for variables section (#5201) (@michaelplavnik)
• #5200 JsonLayout - Added IndentJson for pretty format (#5200) (@nih0n)
• #5197 Log4jXmlEvent - Fix dummy-Namespace when using IncludeScopeProperties (#5197) (@snakefoot)
• #5195 ConfigurationItemFactory - Handle concurrent registration with single lock (#5195) (@snakefoot)
• #5193 AsyncTaskTarget - Include task exception on completed event (#5193) (@snakefoot)
• #5186 ScopeContext - Uniform initial small array sizes (#5186) (@snakefoot)

Improvements

• #5174 LoggingRule - FinalMinLevel with Layout support (#5174) (@Aaronmsv)
• #5177 MailTarget - Added support for email message headers (#5177) (@snakefoot)
• #5175 ScopeContext - Replace rescursive lookup with enumeration (#5175) (@snakefoot)
• #5168 MethodCallTarget - Compile Method Invoke as Expression Trees (#5168) (@snakefoot)
• #5165 PaddingLayoutRendererWrapper - Avoid using Insert for reusable StringBuilder (#5165) (@snakefoot)
• #5159 Json serializer with ISpanFormattable support for decimal + double (#5168) (@snakefoot)

Improvements

• #5157 FileTarget - Archive Dynamic FileName ordering ignore case (#5157) (@snakefoot)
• #5150 EventLogTarget - EventId with LogEvent Property Lookup by default (#5150) (@snakefoot)
• #5148 ReplaceLayoutRendererWrapper - SearchFor is required, and ReplaceWith optional (#5148) (@snakefoot)
• #5146 SpecialFolderLayoutRenderer - Fallback for Windows Nano (#5146) (@snakefoot)
• #5144 NetworkTarget emit LogEventDropped event on NetworkError (#5144) (@ShadowDancer)
• #5141 AsyncTaskTarget - Dynamic wait time after TaskTimeoutSeconds has expired (#5141) (@snakefoot)
• #5140 ConfigurationItemFactory - Handle concurrent registration with single lock (#5140) (@snakefoot)

Improvements

• #5134 XmlLayout - Added Layout-option to XmlElement to match XmlAttribute (#5134) (@snakefoot)
• #5126 JsonLayout - Avoid NullReferenceException when JsonAttribute has no Layout (#5126) (@snakefoot)
• #5122 ConfigurationItemFactory - Handle concurrent registration of extensions (#5122) (@snakefoot)
• #5121 LogEventInfo with custom MessageFormatter now generates FormattedMessage upfront (#5121) (@snakefoot)
• #5118 AsyncTargetWrapper - Reduce overhead when scheduling instant background writer thread (#5118) (@snakefoot)
• #5115 ConfigurationItemFactory - Faster scan of NLog types with filter on IsPublic / IsClass (#5115) (@snakefoot)

Improvements

• #5102 MessageTemplates ValueFormatter with support for ISpanFormattable (#5102) (@snakefoot)
• #5101 Add LogEventDropped handler to the NetworkTarget (#5101) (@ShadowDancer)
• #5108 Improving InternalLogger output when adding NLog targets to configuration (#5108) (@snakefoot)
• #5110 ObjectPathRendererWrapper - Added public method TryGetPropertyValue (#5110) (@snakefoot)

Improvements

• #5092 InternalLogger - LogFile expand filepath variables (#5092) (@RyanGaudion)
• #5090 ReplaceNewLines - Support Replacement with newlines (#5090) (@Orace)
• #5086 ScopeIndent LayoutRenderer (#5086) (@snakefoot)
• #5085 Introduced TriLetter as LevelFormat (Trc, Dbg, Inf, Wrn, Err, Ftl) (#5085) (@snakefoot)
• #5078 LogFactory.Setup - Added support for RegisterLayout and validate NLog types (#5078) (@snakefoot)
• #5076 AutoFlushTargetWrapper - Fix race-condition that makes unit-tests unstable (#5076) (@snakefoot)
• #5073 Include error-message from inner-exception when layout contains unknown layoutrenderer (#5073) (@snakefoot)
• #5065 ObjectReflectionCache - Skip serializing System.Net.IPAddress (#5065) (@snakefoot)
• #5060 ObjectReflectionCache - Skip reflection of delegate-objects (#5060) (@snakefoot)
• #5057 OnException + OnHasProperties - Added Else-option (#5057) (@snakefoot)
• #5056 LogEventBuilder - Added Log(Type wrapperType) for custom Logger wrapper (#5056) (@snakefoot)

Fixes

• #5051 Fixed embedded resource with ILLink.Descriptors.xml to avoid IL2007 (#5051) (@snakefoot)

Improvements

• #5034 Added embedded resource with ILLink.Descriptors.xml to skip AOT (#5034) (@snakefoot)
• #5035 Layout Typed that can handle LogEventInfo is null (#5035) (@snakefoot)
• #5036 JsonLayout - Fix output for Attributes with IncludeEmptyValue=false and Encode=false (#5036) (@snakefoot)

Improvements

• #5019 Layout Typed validates fixed values upfront at config initialization, instead of when logging (#5019) (@snakefoot)
• #5026 Removed obsolete dependency Microsoft.Extensions.PlatformAbstractions (#5026) (@snakefoot)
• #5016 WebServiceTarget - Verifies Url as RequiredParameter (#5016) (@snakefoot)
• #5014 WebServiceTarget - Improve InternalLogging when Url is invalid (#5014) (@snakefoot)
• #5010 GlobalDiagnosticsContext - Implicit caching of value lookup (#5010) (@snakefoot)
• #5004 EventLogTarget - Bump default MaxMessageLength to 30000 to match limit in Win2008 (#5004) (@snakefoot)
• #4995 Support UniversalTime = false when NLog time-source is UTC (#4995) (@snakefoot)
• #4987 ConfigurationItemFactory - Include original type-alias when CreateInstance fails (#4987) (@snakefoot)
• #4981 AssemblyVersionLayoutRenderer - Support override of Default value (#4981) (@snakefoot)
• #4976 LoggingConfiguration - AddRule with overload for LoggingRule object (#4976) (@tvogel-nid)

Improvements

• #4938 LoggingConfigurationParser should alert when LoggingRule filters are bad (#4938) (@snakefoot)
• #4940 CompoundLayout with layout from config variable (#4940) (@snakefoot)
• #4944 Mark Target LayoutWithLock as obsolete, since only temporary workaround (#4944) (@snakefoot)
• #4950 FileTarget - First acquire file-handle to compress before creating zip-file (#4950) (@snakefoot)
• #4953 FileTarget - Zip compression should not truncate when zip-file already exists (#4953) (@snakefoot)
• #4965 Max StackTraceUsage should be computed using bitwise OR (#4965) (@martinzding)
• #4963 Improved source-code documentation by fixing spelling errors (#4963) (@KurnakovMaksim)

See List of major changes in NLog 5.0.

Improvements

• #4922 NetworkTarget - Dual Mode IPv4 mapped addresses over IPv6 (#4922) (@snakefoot)
• #4895 LogManager.Setup().LoadConfigurationFromAssemblyResource() can load config from embedded resource (#4895) (@snakefoot)
• #4893 NetworkTarget - Reduce memory allocations in UdpNetworkSender (#4893) (@snakefoot)
• #4891 + #4924 Log4JXmlEventLayoutRenderer - IncludeEventProperties default = true (#4891 + #4924) (@snakefoot)
• #4887 NetworkTarget - Support Compress = GZip for UDP with GELF to GrayLog (#4887) (@snakefoot)
• #4882 Updated dependencies for NetStandard1.x to fix warnings (#4882) (@snakefoot)
• #4877 CounterLayoutRenderer - Support 64 bit integer and raw value (#4877) (@snakefoot)
• #4867 WindowsIdentityLayoutRenderer - Dispose WindowsIdentity after use (#4867) (@snakefoot)
• #4863 + #4868 Support SpecialFolder UserApplicationDataDir for internalLogFile when parsing nlog.config (#4863 + #4868) (@snakefoot)
• #4859 RetryingTargetWrapper - Changed RetryCount and RetryDelay to typed Layout (#4859) (@snakefoot)
• #4858 BufferingTargetWrapper - Changed BufferSize + FlushTimeout to typed Layout (#4858) (@snakefoot)
• #4857 LimitingTargetWrapper - Changed MessageLimit + Interval to typed Layout (#4857) (@snakefoot)
• #4838 Added various null checks to improve code quality (#4838) (@KurnakovMaksim)
• #4835 Fixed missing initialization of layout-parameters for ConditionMethodExpression (#4835) (@snakefoot)
• #4824 LogFactory - Avoid checking candidate NLog-config files for every Logger created (#4824) (@snakefoot)
• #4823 Improve InternalLogger output when testing candidate config file locations (#4823) (@snakefoot)
• #4819 Improve loading of AppName.exe.nlog with .NET6 single file publish (#4819) (@snakefoot)
• #4812 Translate ConditionParseException into NLogConfigurationException (#4812) (@snakefoot)
• #4809 NLogConfigurationException - Improve styling of error-message when failing to assign property (#4809) (@snakefoot)
• #4808 NLogRuntimeException constructor with string.Format marked obsolete (#4808) (@snakefoot)
• #4807 NLogConfigurationException constructor with string.Format marked obsolete (#4807) (@snakefoot)
• #4789 FallbackGroupTarget - Improve InternalLogger output when no more fallback (#4789) (@snakefoot)
• #4788 NetworkTarget - Report to InternalLogger at Debug-level when discarding huge LogEvents (#4788) (@snakefoot)
• #4787 Added extra JetBrains Annotations with StructuredMessageTemplateAttribute (#4787) (@snakefoot)
• #4785 Improve InternalLogger output for unnamed nested wrapper targets (#4785) (@snakefoot)
• #4784 Improve InternalLogger output for named nested wrapper targets (#4784) (@snakefoot)
• #4777 DatabaseTarget - Removed alias DB to avoid promoting acronyms (#4777) (@snakefoot)
• #4776 LoggingRule - Allow FinalMinLevel to override previous rules (#4776) (@snakefoot)
• #4775 InternalLogger IncludeTimestamp = true by default to restore original behavior (#4775) (@snakefoot)
• #4773 Fix xml-docs and replaced broken link config.html with wiki-link (#4773) (@snakefoot)
• #4772 Improve InternalLogger output when queue OnOverflow (#4772) (@snakefoot)
• #4770 LogFactory DefaultCultureInfo-setter should also update active config (#4770) (@snakefoot)