Microsoft.Extensions.Logging 11.0.0-rc.1.26425.128

About

Microsoft.Extensions.Logging is combined with a core logging abstraction under Microsoft.Extensions.Logging.Abstractions. This abstraction is available in our basic built-in implementations like console, event log, and debug (Debug.WriteLine) logging.

Key Features

  • Provide concrete implementations of ILoggerFactory
  • Provide extension methods for service collections, logger builder, and activity tracking
  • Provide logging filtering extension methods for logger builder

How to Use

Prior to .NET 6, we only had two forms possible for doing logging, using Microsoft.Extensions.Logging:

public class LoggingSample1
{
    private ILogger _logger;

    public LoggingSample1(ILogger logger)
    {
        _logger = logger;
    }

    public void LogMethod(string name)
    {
        _logger.LogInformation("Hello {name}", name);
    }
}

Here are some problems with the LoggingSample1 sample using LogInformation, LogWarning, etc.:

  1. We can provide event ID through these APIs, but they are not required today. Which leads to bad usages in real systems that want to react or detect specific event issues being logged.
  2. Parameters passed are processed before LogLevel checks; this leads to unnecessary code paths getting triggered even when logging is disabled for a log level.
  3. It requires parsing of message string on every use to find templates to substitute.

Because of these problems, the more efficient runtime approach recommended as best practices is to use LoggerMessage.Define APIs instead, illustrated below with LoggingSample2:

public class LoggingSample2
{
    private ILogger _logger;

    public LoggingSample2(ILogger logger)
    {
        _logger = logger;
    }

    public void LogMethod(string name)
    {
        Log.LogName(_logger, name);
    }

    private static class Log
    {
        private static readonly Action<ILogger, string, Exception> _logName = LoggerMessage.Define<string>(LogLevel.Information, 0, @"Hello {name}");

        public static void LogName(ILogger logger, string name)
        {
            _logName(logger, name, null!);
        }
    }
}

To reach a balance between performance and usability we added the compile-time logging source generator feature in .NET 6, to learn more about it and learn how to use a source generator to create log messages check out this documentation.


public partial class InstanceLoggingExample
{
    private readonly ILogger _logger;

    public InstanceLoggingExample(ILogger logger)
    {
        _logger = logger;
    }

    [LoggerMessage(
        EventId = 0,
        Level = LogLevel.Critical,
        Message = "Could not open socket to `{hostName}`")]
    public partial void CouldNotOpenSocket(string hostName);
}

Baggage and Tags for ActivityTrackingOptions

.NET 5.0 exposed a new feature that allows configuring the logger builder with the ActivityTrackingOption to add the tracing context Span Id, Trace Id, Parent Id, Trace state, and Trace flags to the logging scope. The tracing context usually carried in Activity.Current.

.NET 6.0 Preview 1 extended this feature to include more tracing context properties which are the Baggage and the Tags:

  var loggerFactory = LoggerFactory.Create(logging =>
  {
      logging.Configure(options =>
      {
          options.ActivityTrackingOptions = ActivityTrackingOptions.Tags | ActivityTrackingOptions.Baggage;
      }).AddSimpleConsole(options =>
      {
          options.IncludeScopes = true;
      });
  });

Main Types

The main types provided by this library are:

  • LoggingServiceCollectionExtensions
  • LoggerFactory
  • LoggerFactoryOptions
  • LoggingBuilderExtensions
  • ActivityTrackingOptions
  • FilterLoggingBuilderExtensions

Additional Documentation

Microsoft.Extensions.Logging.Abstractions Microsoft.Extensions.Logging.Console Microsoft.Extensions.Logging.Debug Microsoft.Extensions.Logging.EventSource Microsoft.Extensions.Logging.EventLog Microsoft.Extensions.Logging.TraceSource

Feedback & Contributing

Microsoft.Extensions.Logging is released as open source under the MIT license. Bug reports and contributions are welcome at the GitHub repository.

Showing the top 20 packages that depend on Microsoft.Extensions.Logging.

Packages Downloads
MediatR
Simple, unambitious mediator implementation in .NET
 506
Microsoft.EntityFrameworkCore
Entity Framework Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations. EF Core works with SQL Server, Azure SQL Database, SQLite, Azure Cosmos DB, MySQL, PostgreSQL, and other databases through a provider plugin API. Commonly Used Types: Microsoft.EntityFrameworkCore.DbContext Microsoft.EntityFrameworkCore.DbSet
 256
Microsoft.EntityFrameworkCore
Entity Framework Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations. EF Core works with SQL Server, Azure SQL Database, SQLite, Azure Cosmos DB, MySQL, PostgreSQL, and other databases through a provider plugin API. Commonly Used Types: Microsoft.EntityFrameworkCore.DbContext Microsoft.EntityFrameworkCore.DbSet
 279
Microsoft.EntityFrameworkCore
Entity Framework Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations. EF Core works with SQL Server, Azure SQL Database, SQLite, Azure Cosmos DB, MySQL, PostgreSQL, and other databases through a provider plugin API. Commonly Used Types: Microsoft.EntityFrameworkCore.DbContext Microsoft.EntityFrameworkCore.DbSet
 295
Microsoft.EntityFrameworkCore
Entity Framework Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations. EF Core works with SQL Server, Azure SQL Database, SQLite, Azure Cosmos DB, MySQL, PostgreSQL, and other databases through a provider plugin API. Commonly Used Types: Microsoft.EntityFrameworkCore.DbContext Microsoft.EntityFrameworkCore.DbSet
 312
Microsoft.EntityFrameworkCore
Entity Framework Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations. EF Core works with SQL Server, Azure SQL Database, SQLite, Azure Cosmos DB, MySQL, PostgreSQL, and other databases through a provider plugin API. Commonly Used Types: Microsoft.EntityFrameworkCore.DbContext Microsoft.EntityFrameworkCore.DbSet
 385
Microsoft.EntityFrameworkCore
Entity Framework Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations. EF Core works with SQL Server, Azure SQL Database, SQLite, Azure Cosmos DB, MySQL, PostgreSQL, and other databases through a provider plugin API. Commonly Used Types: Microsoft.EntityFrameworkCore.DbContext Microsoft.EntityFrameworkCore.DbSet
 541
Microsoft.EntityFrameworkCore.Design
Shared design-time components for Entity Framework Core tools.
 288
Microsoft.EntityFrameworkCore.Design
Shared design-time components for Entity Framework Core tools.
 325
Microsoft.EntityFrameworkCore.Relational
Shared Entity Framework Core components for relational database providers.
 293
Microsoft.EntityFrameworkCore.Relational
Shared Entity Framework Core components for relational database providers.
 296
Microsoft.EntityFrameworkCore.Relational
Shared Entity Framework Core components for relational database providers.
 452
Microsoft.EntityFrameworkCore.SqlServer
Microsoft SQL Server database provider for Entity Framework Core.
 312
Serilog.AspNetCore
Serilog support for ASP.NET Core logging
 293
Serilog.AspNetCore
Serilog support for ASP.NET Core logging
 295
Serilog.AspNetCore
Serilog support for ASP.NET Core logging
 373
Serilog.AspNetCore
Serilog support for ASP.NET Core logging
 437
Serilog.AspNetCore.Plus
Serilog support for ASP.NET Core logging with some plus features
 251
Serilog.Extensions.Logging
Low-level Serilog provider for Microsoft.Extensions.Logging
 250
Serilog.Extensions.Logging
Low-level Serilog provider for Microsoft.Extensions.Logging
 254

https://go.microsoft.com/fwlink/?LinkID=799421

.NET 10.0

.NET Standard 2.1

.NET Standard 2.0

.NET Framework 4.6.2

.NET 11.0

Version Downloads Last updated
11.0.0-rc.1.26425.128 14 09/09/2026
11.0.0-preview.7.26381.103 16 08/12/2026
11.0.0-preview.6.26359.118 21 07/16/2026
11.0.0-preview.5.26302.115 26 06/10/2026
11.0.0-preview.4.26230.115 26 05/13/2026
11.0.0-preview.3.26207.106 42 04/14/2026
11.0.0-preview.2.26159.112 50 03/11/2026
11.0.0-preview.1.26104.118 55 02/14/2026
10.0.12 9 09/09/2026
10.0.11 16 08/11/2026
10.0.10 20 07/16/2026
10.0.9 25 06/10/2026
10.0.8 25 05/13/2026
10.0.7 55 04/21/2026
10.0.6 38 04/14/2026
10.0.5 51 03/14/2026
10.0.4 44 03/11/2026
10.0.3 52 02/14/2026
10.0.2 52 01/13/2026
10.0.1 76 12/09/2025
10.0.0 95 11/11/2025
10.0.0-rc.2.25502.107 109 10/15/2025
10.0.0-rc.1.25451.107 116 09/09/2025
10.0.0-preview.7.25380.108 139 08/13/2025
10.0.0-preview.6.25358.103 128 07/17/2025
10.0.0-preview.5.25277.114 140 06/06/2025
10.0.0-preview.4.25258.110 115 05/15/2025
10.0.0-preview.3.25171.5 147 04/11/2025
10.0.0-preview.2.25163.2 143 03/31/2025
10.0.0-preview.1.25080.5 125 03/30/2025
9.0.20 11 09/09/2026
9.0.19 18 08/12/2026
9.0.18 22 07/16/2026
9.0.17 25 06/10/2026
9.0.16 29 05/13/2026
9.0.15 48 04/14/2026
9.0.14 50 03/11/2026
9.0.13 53 02/15/2026
9.0.12 57 01/13/2026
9.0.11 79 11/11/2025
9.0.10 122 10/15/2025
9.0.9 105 09/09/2025
9.0.8 197 08/06/2025
9.0.7 141 07/09/2025
9.0.6 124 06/11/2025
9.0.5 128 05/15/2025
9.0.4 145 04/11/2025
9.0.3 227 03/28/2025
9.0.2 183 02/16/2025
9.0.1 349 02/13/2025
9.0.0 325 11/14/2024
9.0.0-rc.2.24473.5 142 10/17/2024
9.0.0-rc.1.24431.7 123 09/19/2024
9.0.0-preview.7.24405.7 126 08/22/2024
9.0.0-preview.6.24327.7 156 07/18/2024
9.0.0-preview.5.24306.7 159 06/24/2024
9.0.0-preview.4.24266.19 149 07/19/2024
9.0.0-preview.3.24172.9 155 07/23/2024
9.0.0-preview.2.24128.5 146 07/18/2024
9.0.0-preview.1.24080.9 182 07/20/2024
8.0.1 265 10/15/2024
8.0.0 442 02/04/2024
8.0.0-rc.2.23479.6 170 07/23/2024
8.0.0-rc.1.23419.4 153 07/23/2024
8.0.0-preview.7.23375.6 161 07/27/2024
8.0.0-preview.6.23329.7 165 07/23/2024
8.0.0-preview.5.23280.8 170 07/17/2024
8.0.0-preview.4.23259.5 160 07/23/2024
8.0.0-preview.3.23174.8 156 07/22/2024
8.0.0-preview.2.23128.3 161 07/23/2024
8.0.0-preview.1.23110.8 171 07/22/2024
7.0.0 232 02/04/2024
7.0.0-rc.2.22472.3 142 07/23/2024
7.0.0-rc.1.22426.10 144 07/23/2024
7.0.0-preview.7.22375.6 162 07/23/2024
7.0.0-preview.6.22324.4 147 07/23/2024
7.0.0-preview.5.22301.12 165 07/23/2024
7.0.0-preview.4.22229.4 177 07/23/2024
7.0.0-preview.3.22175.4 182 07/20/2024
7.0.0-preview.2.22152.2 149 07/23/2024
7.0.0-preview.1.22076.8 145 07/23/2024
6.0.2-mauipre.1.22054.8 117 09/17/2025
6.0.1 120 11/14/2024
6.0.0 357 02/04/2024
6.0.0-rc.2.21480.5 157 07/23/2024
6.0.0-rc.1.21451.13 143 07/23/2024
6.0.0-preview.7.21377.19 143 07/21/2024
6.0.0-preview.6.21352.12 151 07/23/2024
6.0.0-preview.5.21301.5 158 07/22/2024
6.0.0-preview.4.21253.7 166 07/23/2024
6.0.0-preview.3.21201.4 157 07/23/2024
6.0.0-preview.2.21154.6 159 07/23/2024
6.0.0-preview.1.21102.12 160 07/23/2024
5.0.0 315 02/04/2024
5.0.0-rc.2.20475.5 148 07/23/2024
5.0.0-rc.1.20451.14 151 07/23/2024
5.0.0-preview.8.20407.11 132 07/23/2024
5.0.0-preview.7.20364.11 131 07/23/2024
5.0.0-preview.6.20305.6 177 07/20/2024
5.0.0-preview.5.20278.1 146 07/18/2024
5.0.0-preview.4.20251.6 188 07/23/2024
5.0.0-preview.3.20215.2 135 07/21/2024
5.0.0-preview.2.20160.3 152 07/23/2024
5.0.0-preview.1.20120.4 148 07/23/2024
3.1.32 156 07/23/2024
3.1.31 135 07/23/2024
3.1.30 158 07/23/2024
3.1.29 155 07/23/2024
3.1.28 159 07/23/2024
3.1.27 154 07/23/2024
3.1.26 174 07/23/2024
3.1.25 165 07/17/2024
3.1.24 153 07/23/2024
3.1.23 170 07/23/2024
3.1.22 147 07/23/2024
3.1.21 173 07/23/2024
3.1.20 167 07/18/2024
3.1.19 160 07/23/2024
3.1.18 169 07/23/2024
3.1.17 127 07/23/2024
3.1.16 158 07/23/2024
3.1.15 146 07/20/2024
3.1.14 164 07/23/2024
3.1.13 148 07/23/2024
3.1.12 162 07/23/2024
3.1.11 167 07/23/2024
3.1.10 152 07/23/2024
3.1.9 144 07/23/2024
3.1.8 154 07/23/2024
3.1.7 159 07/23/2024
3.1.6 159 07/22/2024
3.1.5 172 07/17/2024
3.1.4 186 07/23/2024
3.1.3 158 07/23/2024
3.1.2 150 07/23/2024
3.1.1 141 07/23/2024
3.1.0 158 07/23/2024
3.1.0-preview3.19553.2 167 07/23/2024
3.1.0-preview2.19525.4 150 07/23/2024
3.1.0-preview1.19506.1 158 07/23/2024
3.0.3 157 07/23/2024
3.0.2 181 07/17/2024
3.0.1 161 07/23/2024
3.0.0 149 07/23/2024
3.0.0-rc1.19456.10 152 07/23/2024
3.0.0-preview9.19423.4 152 07/23/2024
3.0.0-preview8.19405.4 156 07/18/2024
3.0.0-preview7.19362.4 140 07/23/2024
3.0.0-preview6.19304.6 151 07/23/2024
3.0.0-preview5.19227.9 149 07/23/2024
3.0.0-preview4.19216.2 156 07/24/2024
3.0.0-preview3.19153.1 161 07/18/2024
3.0.0-preview.19074.2 184 07/18/2024
3.0.0-preview.18572.1 162 07/23/2024
2.2.0 158 07/19/2024
2.2.0-preview3-35497 140 07/23/2024
2.2.0-preview2-35157 141 07/23/2024
2.2.0-preview1-35029 144 07/23/2024
2.1.1 163 07/21/2024
2.1.0 156 07/23/2024
2.1.0-rc1-final 138 07/22/2024
2.1.0-preview2-final 156 07/23/2024
2.1.0-preview1-final 168 07/18/2024
2.0.2 153 07/23/2024
2.0.1 150 02/19/2024
2.0.0 166 07/22/2024
2.0.0-preview2-final 144 07/23/2024
2.0.0-preview1-final 158 07/20/2024
1.1.2 168 07/23/2024
1.1.1 158 07/23/2024
1.1.0 165 07/23/2024
1.1.0-preview1-final 148 07/23/2024
1.0.2 167 07/20/2024
1.0.1 167 07/18/2024
1.0.0 144 07/24/2024
1.0.0-rc2-final 167 07/23/2024
1.0.0-rc1-final 162 07/23/2024