Useful extensions for Types in C#

TypeExtensions.cs

// Explodes a type (i.e. recursively gets all generic type parameters)
public static class TypeExtensions
{
    public static ISet<Type> Explode(this Type t)
    {
        return ExplodeType(t);
    }

    private static ISet<Type> ExplodeType(Type t, ISet<Type> result = null)
    {
        if (result == null)
        {
            result = new HashSet<Type>();
        }

        if (t == null)
        {
            return result;
        }

        // Only continue processing if we haven't seen this type before to avoid cycles
        if (result.Add(t))
        {
            if (t.IsGenericTypeDefinition)
            {
                throw new ArgumentException(nameof(t));
            }

            if (t.IsGenericType)
            {
                foreach (var typeArg in t.GenericTypeArguments)
                {
                    ExplodeType(typeArg, result);
                }
            }
        }

        return result;
    }
}