The Logging plugin allows the Image Resizer to perform logging (to disk, SQL, e-mail, whatever you configure).

It is a wrapper for NLog, and as such, requires NLog.dll

Installation

Either run Install-Package ImageResizer.Plugins.Logging in the NuGet package manager, or:

1. Add ImageResizer.Plugins.Logging.dll to your project. NLog.dll is also needed, but doesn't have to be referenced directly - it should be automatically copied if you are using Visual Studio. If not, copy it to the /bin folder as well
2. Add <add name="Logging" /> inside <plugins></plugins> in Web.config.

NuGet or not, you'll need to manually add a configuration section for NLog and configure logging rules & targets:

<configSections>
  <section name="resizer" type="ImageResizer.ResizerSection"/>
  <section name="nlog" type="NLog.Config.ConfigSectionHandler, NLog"/>
</configSections>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

  <targets  async="true" >
    <target name="resizer" xsi:type="File" fileName="${basedir}/Logs/Resizer.txt" />
    <target name="diskcache" xsi:type="File" fileName="${basedir}/Logs/Diskcache.txt" layout="${processid} ${pad:padCharacter= :padding=3:inner=${threadid}} ${time} ${message}"  />
  </targets>

  <rules>
    <logger name="ImageResizer.Plugins.DiskCache" minlevel="Trace" writeTo="diskcache" final="true"  />
    <logger name="*" minlevel="Debug" writeTo="resizer" />
  </rules>
</nlog>

Notes

Currently, detailed logging has only been implemented for the DiskCache plugin. Set logging=true on the <diskcache /> element to enable it.