log4net vs Microsoft.NETCore.Portable.Compatibility

Log4net is a tool to help the programmer output log statements to a variety of output targets. In case of problems with an application, it is helpful to enable logging so that the problem can be located. With log4net it is possible to enable logging at runtime without modifying the application binary. The log4net package is designed so that log statements can remain in shipped code without incurring a high performance cost. It follows that the speed of logging (or rather not logging) is crucial. At the same time, log output can be so voluminous that it quickly becomes overwhelming. One of the distinctive features of log4net is the notion of hierarchical loggers. Using these loggers it is possible to selectively control which log statements are output at arbitrary granularity. log4net is designed with two distinct goals in mind: speed and flexibility.

Enables compatiblity with portable libraries targeting previous .NET releases like .NET Framework 4.0 and Silverlight. This package supports retargeting references to classic reference assemblies (mscorlib.dll, system.dll, etc) to new contract assemblies (System.Runtime.dll, System.IO, etc). It does this in a pay-for-play way to prevent consuming assemblies from having to reference all of the contracts that happen to overlap with mscorlib. As such, when using this package you may encounter errors like error CS0012: The type 'WebRequest' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Net.Requests, Version=0.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. To resolve these errors install the package with the same name name as the missing assembly. TFS ID: 1615845, GitHub SHA: https://github.com/dotnet/corefx/tree/4ed15a98d1c957ae661d490ccfcfe77f4ed31d5a When using NuGet 3.x this package requires at least version 3.4.