WebApiDependencyResolver.cs

/// <summary>
/// This is just a helper class to make resolving dependencies manually a bit tidier
/// </summary>
public static class WebApiDependencyResolver
{
    /// <summary>
    /// Use configured WebApi DependencyResolver to resolve dependency of type T.
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <returns></returns>
    public static T ResolveDependency<T>()
    {
        var resolver = GlobalConfiguration.Configuration.DependencyResolver;
        var type = typeof(T);
        return (T)resolver.GetService(type);
    }

    /// <summary>
    /// Resolve dependency of type T using IDependencyScope.
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="scope">The scope.</param>
    /// <returns></returns>
    public static T ResolveDependency<T>(this IDependencyScope scope)
    {
        var type = typeof(T);
        return (T)scope.GetService(type);
    }
}