Loads the assembly System.Net.Http.Primitives from the same location as the executing assembly in a powershell module. This is necessary when using the Google .NET client library in powershell Cmdlets

ModuleAssemblyLoader.cs

using System;
using System.IO;
using System.Management.Automation;
using System.Reflection;

/// <summary>
/// Powershell module intializer that ensures that the assembly System.Net.Http.Primitives required by Goolge client library is loaded correctly
/// </summary>
public class ModuleAssemblyLoader : IModuleAssemblyInitializer
{

    #region Constants

    private const string s_SystemNetHttpPrimitives = "System.Net.Http.Primitives";
    private const string s_Dll = ".dll";

    #endregion


    #region IModuleAssemblyInitializer Implementation

    public void OnImport()
    {
        //register for the assembly resolve event
        AppDomain currentDomain = AppDomain.CurrentDomain;
        currentDomain.AssemblyResolve += AssemblyResolveEventHandler;
    }

    #endregion


    #region Private Methods

    private static Assembly AssemblyResolveEventHandler(object sender, ResolveEventArgs args)
    {
        //parse the name of the requested assembly
        var assemblyName = new AssemblyName(args.Name);

        //for System.Net.Http.Primitives use the assembly located next to the cmdlet assembly
        if (assemblyName.Name == s_SystemNetHttpPrimitives)
        {
            var dir = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);

            var assembly = Assembly.LoadFile(Path.Combine(dir, s_SystemNetHttpPrimitives + s_Dll));
            return assembly;
        }

        //do not change behaviour for other assemblies
        return null;
    }

    #endregion

}