Microsoft.Extensions.Logging 11.0.0-preview.6.26359.118

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
 496
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
 239
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
 269
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
 276
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
 302
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
 369
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
 527
Microsoft.EntityFrameworkCore.Design
Shared design-time components for Entity Framework Core tools.
 275
Microsoft.EntityFrameworkCore.Design
Shared design-time components for Entity Framework Core tools.
 310
Microsoft.EntityFrameworkCore.Relational
Shared Entity Framework Core components for relational database providers.
 279
Microsoft.EntityFrameworkCore.Relational
Shared Entity Framework Core components for relational database providers.
 281
Microsoft.EntityFrameworkCore.Relational
Shared Entity Framework Core components for relational database providers.
 443
Microsoft.EntityFrameworkCore.SqlServer
Microsoft SQL Server database provider for Entity Framework Core.
 298
Serilog.AspNetCore
Serilog support for ASP.NET Core logging
 275
Serilog.AspNetCore
Serilog support for ASP.NET Core logging
 282
Serilog.AspNetCore
Serilog support for ASP.NET Core logging
 358
Serilog.AspNetCore
Serilog support for ASP.NET Core logging
 424
Serilog.AspNetCore.Plus
Serilog support for ASP.NET Core logging with some plus features
 244
Serilog.Extensions.Logging
Low-level Serilog provider for Microsoft.Extensions.Logging
 240

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-preview.6.26359.118 3 07/16/2026
11.0.0-preview.5.26302.115 12 06/10/2026
11.0.0-preview.4.26230.115 17 05/13/2026
11.0.0-preview.3.26207.106 32 04/14/2026
11.0.0-preview.2.26159.112 36 03/11/2026
11.0.0-preview.1.26104.118 43 02/14/2026
10.0.10 6 07/16/2026
10.0.9 11 06/10/2026
10.0.8 16 05/13/2026
10.0.7 37 04/21/2026
10.0.6 29 04/14/2026
10.0.5 38 03/14/2026
10.0.4 35 03/11/2026
10.0.3 40 02/14/2026
10.0.2 41 01/13/2026
10.0.1 60 12/09/2025
10.0.0 83 11/11/2025
10.0.0-rc.2.25502.107 96 10/15/2025
10.0.0-rc.1.25451.107 103 09/09/2025
10.0.0-preview.7.25380.108 126 08/13/2025
10.0.0-preview.6.25358.103 115 07/17/2025
10.0.0-preview.5.25277.114 126 06/06/2025
10.0.0-preview.4.25258.110 103 05/15/2025
10.0.0-preview.3.25171.5 134 04/11/2025
10.0.0-preview.2.25163.2 132 03/31/2025
10.0.0-preview.1.25080.5 117 03/30/2025
9.0.18 3 07/16/2026
9.0.17 12 06/10/2026
9.0.16 17 05/13/2026
9.0.15 36 04/14/2026
9.0.14 36 03/11/2026
9.0.13 44 02/15/2026
9.0.12 47 01/13/2026
9.0.11 65 11/11/2025
9.0.10 112 10/15/2025
9.0.9 93 09/09/2025
9.0.8 183 08/06/2025
9.0.7 124 07/09/2025
9.0.6 110 06/11/2025
9.0.5 117 05/15/2025
9.0.4 132 04/11/2025
9.0.3 214 03/28/2025
9.0.2 169 02/16/2025
9.0.1 338 02/13/2025
9.0.0 312 11/14/2024
9.0.0-rc.2.24473.5 132 10/17/2024
9.0.0-rc.1.24431.7 114 09/19/2024
9.0.0-preview.7.24405.7 114 08/22/2024
9.0.0-preview.6.24327.7 143 07/18/2024
9.0.0-preview.5.24306.7 147 06/24/2024
9.0.0-preview.4.24266.19 139 07/19/2024
9.0.0-preview.3.24172.9 147 07/23/2024
9.0.0-preview.2.24128.5 133 07/18/2024
9.0.0-preview.1.24080.9 173 07/20/2024
8.0.1 251 10/15/2024
8.0.0 430 02/04/2024
8.0.0-rc.2.23479.6 155 07/23/2024
8.0.0-rc.1.23419.4 143 07/23/2024
8.0.0-preview.7.23375.6 148 07/27/2024
8.0.0-preview.6.23329.7 152 07/23/2024
8.0.0-preview.5.23280.8 159 07/17/2024
8.0.0-preview.4.23259.5 152 07/23/2024
8.0.0-preview.3.23174.8 144 07/22/2024
8.0.0-preview.2.23128.3 151 07/23/2024
8.0.0-preview.1.23110.8 162 07/22/2024
7.0.0 222 02/04/2024
7.0.0-rc.2.22472.3 130 07/23/2024
7.0.0-rc.1.22426.10 135 07/23/2024
7.0.0-preview.7.22375.6 149 07/23/2024
7.0.0-preview.6.22324.4 137 07/23/2024
7.0.0-preview.5.22301.12 155 07/23/2024
7.0.0-preview.4.22229.4 164 07/23/2024
7.0.0-preview.3.22175.4 168 07/20/2024
7.0.0-preview.2.22152.2 137 07/23/2024
7.0.0-preview.1.22076.8 135 07/23/2024
6.0.2-mauipre.1.22054.8 105 09/17/2025
6.0.1 109 11/14/2024
6.0.0 345 02/04/2024
6.0.0-rc.2.21480.5 145 07/23/2024
6.0.0-rc.1.21451.13 132 07/23/2024
6.0.0-preview.7.21377.19 132 07/21/2024
6.0.0-preview.6.21352.12 139 07/23/2024
6.0.0-preview.5.21301.5 149 07/22/2024
6.0.0-preview.4.21253.7 154 07/23/2024
6.0.0-preview.3.21201.4 140 07/23/2024
6.0.0-preview.2.21154.6 148 07/23/2024
6.0.0-preview.1.21102.12 147 07/23/2024
5.0.0 304 02/04/2024
5.0.0-rc.2.20475.5 141 07/23/2024
5.0.0-rc.1.20451.14 141 07/23/2024
5.0.0-preview.8.20407.11 121 07/23/2024
5.0.0-preview.7.20364.11 122 07/23/2024
5.0.0-preview.6.20305.6 168 07/20/2024
5.0.0-preview.5.20278.1 135 07/18/2024
5.0.0-preview.4.20251.6 175 07/23/2024
5.0.0-preview.3.20215.2 127 07/21/2024
5.0.0-preview.2.20160.3 140 07/23/2024
5.0.0-preview.1.20120.4 134 07/23/2024
3.1.32 144 07/23/2024
3.1.31 128 07/23/2024
3.1.30 144 07/23/2024
3.1.29 145 07/23/2024
3.1.28 145 07/23/2024
3.1.27 145 07/23/2024
3.1.26 164 07/23/2024
3.1.25 153 07/17/2024
3.1.24 141 07/23/2024
3.1.23 157 07/23/2024
3.1.22 136 07/23/2024
3.1.21 161 07/23/2024
3.1.20 154 07/18/2024
3.1.19 146 07/23/2024
3.1.18 156 07/23/2024
3.1.17 113 07/23/2024
3.1.16 148 07/23/2024
3.1.15 136 07/20/2024
3.1.14 148 07/23/2024
3.1.13 137 07/23/2024
3.1.12 149 07/23/2024
3.1.11 156 07/23/2024
3.1.10 141 07/23/2024
3.1.9 131 07/23/2024
3.1.8 143 07/23/2024
3.1.7 146 07/23/2024
3.1.6 147 07/22/2024
3.1.5 159 07/17/2024
3.1.4 172 07/23/2024
3.1.3 148 07/23/2024
3.1.2 139 07/23/2024
3.1.1 133 07/23/2024
3.1.0 148 07/23/2024
3.1.0-preview3.19553.2 154 07/23/2024
3.1.0-preview2.19525.4 135 07/23/2024
3.1.0-preview1.19506.1 143 07/23/2024
3.0.3 146 07/23/2024
3.0.2 170 07/17/2024
3.0.1 149 07/23/2024
3.0.0 139 07/23/2024
3.0.0-rc1.19456.10 141 07/23/2024
3.0.0-preview9.19423.4 145 07/23/2024
3.0.0-preview8.19405.4 143 07/18/2024
3.0.0-preview7.19362.4 128 07/23/2024
3.0.0-preview6.19304.6 138 07/23/2024
3.0.0-preview5.19227.9 139 07/23/2024
3.0.0-preview4.19216.2 144 07/24/2024
3.0.0-preview3.19153.1 150 07/18/2024
3.0.0-preview.19074.2 173 07/18/2024
3.0.0-preview.18572.1 151 07/23/2024
2.2.0 144 07/19/2024
2.2.0-preview3-35497 130 07/23/2024
2.2.0-preview2-35157 127 07/23/2024
2.2.0-preview1-35029 134 07/23/2024
2.1.1 147 07/21/2024
2.1.0 144 07/23/2024
2.1.0-rc1-final 126 07/22/2024
2.1.0-preview2-final 146 07/23/2024
2.1.0-preview1-final 157 07/18/2024
2.0.2 147 07/23/2024
2.0.1 135 02/19/2024
2.0.0 148 07/22/2024
2.0.0-preview2-final 133 07/23/2024
2.0.0-preview1-final 148 07/20/2024
1.1.2 153 07/23/2024
1.1.1 147 07/23/2024
1.1.0 154 07/23/2024
1.1.0-preview1-final 138 07/23/2024
1.0.2 157 07/20/2024
1.0.1 156 07/18/2024
1.0.0 131 07/24/2024
1.0.0-rc2-final 156 07/23/2024
1.0.0-rc1-final 153 07/23/2024