Embed third-party assembly as a resource

gistfile1.cs

// 1. Set build action 'Embedded Resourse'.
// 2. Run this handler as early as possible:

AppDomain.CurrentDomain.AssemblyResolve += (sender, args) =>
{
  string resourceName = "Your.Assembly.Name.Here." + new AssemblyName(args.Name).Name + ".dll";

  using (var stream = Assembly.GetExecutingAssembly().GetManifestResourceStream(resourceName))
  {
    if (stream == null)
    {
      return null;
    }

    var assemblyData = new byte[stream.Length];
    stream.Read(assemblyData, 0, assemblyData.Length);
    return Assembly.Load(assemblyData);
  }
};