LinqExtensions.cs

public static class LinqExtension
   {
      public static void ForEach<T>(this IEnumerable<T> dataSource, Action<T> act)
      {
         if (dataSource != null)
         {
            foreach (var item in dataSource)
            {
               act(item);
            }
         }
      }
   }

log4net.config

<?xml version="1.0" encoding="utf-8" ?>
<log4net>
  <appender name="RollingFile" type="log4net.Appender.RollingFileAppender">
    <file type="log4net.Util.PatternString">
      <converter>
        <name value="folder" />
        <type value="Utilities.SpecialFolderPatternConverter,Common" />
      </converter>
      <conversionPattern value="%folder{CommonApplicationData}\log.txt" />
    </file>
    <appendToFile value="true" />
    <maximumFileSize value="100KB" />
    <maxSizeRollBackups value="2" />
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="[%date] [%5level] [%logger] [%thread] - %message%newline" />
    </layout>
  </appender>

  <root>
    <level value="DEBUG" />
    <appender-ref ref="RollingFile" />
  </root>
</log4net>

Logger.cs

log4net.Config.XmlConfigurator.ConfigureAndWatch(new FileInfo(Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "log4net.config")));

project.xml

<Project DefaultTargets="" InitialTargets="" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="3.5">
  
  <!--Add your own condition with a specific COMPUTERNAME-->
  <Choose>
    <When Condition="'$(Version)' == '2014' AND '$(COMPUTERNAME)' == 'SHACNG130WYJQ'">
      <PropertyGroup>
        <NW>C:\Program Files\Autodesk\Navisworks Manage 2014</NW>
      </PropertyGroup>
    </When>
    <When Condition="'$(Version)' == '2013' AND '$(COMPUTERNAME)' == 'SHACNG130WYJQ'">
      <PropertyGroup>
        <NW>C:\Program Files\Autodesk\Navisworks Manage 2013</NW>
      </PropertyGroup>
    </When>
    <When Condition="'$(Version)' == '2012' AND '$(COMPUTERNAME)' == 'SHACNG130WYJQ'">
      <PropertyGroup>
        <NW>C:\Program Files\Autodesk\Navisworks Manage 2012</NW>
      </PropertyGroup>
    </When>
  </Choose>
  
  <Target Name="CopyPluginFiles">
    <PropertyGroup>
      <NW-Common>$(NW)\Dependencies</NW-Common>
      <NW-GluePlugin>$(NW)\Plugins\$(TargetName)</NW-GluePlugin>
      <NW-GluePluginResources>$(NW)\Plugins\$(TargetName)\en-US</NW-GluePluginResources>
    </PropertyGroup>
  	<Message Text="*** Copy files to Navisworks folders ***" Importance="high" />
		<MakeDir Directories="$(NW-Common)" ContinueOnError="true"/>
		<MakeDir Directories="$(NW-GluePlugin)" ContinueOnError="true"/>
		<MakeDir Directories="$(NW-GluePluginResources)" ContinueOnError="true"/>
		<ItemGroup>
			<PluginFiles Include="$(TargetDir)$(TargetName).*"/>
		</ItemGroup>
		<ItemGroup>
			<CommonFiles Include="$(TargetDir)BIM360GlueAddinsCommon.*"/>
			<CommonFiles Include="$(TargetDir)log4net.*"/>
		</ItemGroup>
		<ItemGroup>
			<ResourceFiles Include="$(TargetDir)Resources\*.*"/>
      <ResourceFiles Include="$(TargetDir)*.name"/>
      <ResourceFiles Include="$(TargetDir)*.xaml"/>
		</ItemGroup>
    
    <!--Common dll and pdb-->
    <Copy SourceFiles="@(CommonFiles)" DestinationFolder="$(NW-Common)" ContinueOnError="true"/>
		<!--Plgin dll and pdb-->
		<Copy SourceFiles="@(PluginFiles)" DestinationFolder="$(NW-GluePlugin)" ContinueOnError="true"/>
		<!--Resources-->
		<Copy SourceFiles="@(ResourceFiles)" DestinationFolder="$(NW-GluePluginResources)" ContinueOnError="true"/>    
	</Target>
</Project>

RetryHelper.cs

 public class RetryHelper
   {
      /// <summary>
      /// Execut a function with retry logic.
      /// </summary>
      /// <typeparam name="TResult">Return type.</typeparam>
      /// <param name="times">retry times.</param>
      /// <param name="job">function to retry</param>
      /// <param name="exceptionHandler">Handle the exceptions if necessary, e.g. log.</param>
      /// <returns>default(T) if failed for every time.</returns>
      public static TResult Do<TResult>(int times, Func<TResult> job, Action<Exception> exceptionHandler = null)
      {
         TResult result = default(TResult);
         for (int i = 0; i < times; i++)
         {
            try
            {
               result = job();
               break;
            }
            catch(Exception e)
            {
               if (exceptionHandler != null)
               {
                  exceptionHandler(e);
               }
            }
         }
         return result;
      }

      /// <summary>
      /// Execut a function with retry logic.
      /// </summary>
      /// <param name="times">retry times.</param>
      /// <param name="job"></param>
      /// <param name="exceptionHandler">Handle the exceptions if necessary, e.g. log.</param>
      /// <returns>true if succeeeded, false if failed for all retries.</returns>
      public static bool Do(int times, Action job, Action<Exception> exceptionHandler = null)
      {
         for (int i = 0; i < times; i++)
         {
            try
            {
               job();
               return true;
            }
            catch(Exception e)
            {
               if (exceptionHandler != null)
               {
                  exceptionHandler(e);
               }
            }
         }
         return false;
      }
   }

SpecialFolderPatternConverter.cs

 /// <summary>
   /// Converter for log4net to allow special folders to be included using a pattern of %folder(<i>specialFolderName</i>).
   /// </summary>
   public class SpecialFolderPatternConverter : log4net.Util.PatternConverter
   {
      /// <summary>
      /// Converts the specified writer.
      /// </summary>
      /// <param name="writer">The writer.</param>
      /// <param name="state">The state.</param>
      override protected void Convert(System.IO.TextWriter writer, object state)
      {
         Environment.SpecialFolder specialFolder = (Environment.SpecialFolder)Enum.Parse(typeof(Environment.SpecialFolder), base.Option, true);
         writer.Write(Environment.GetFolderPath(specialFolder));
      }
   }