C# params with a required minimum of one value

Question

Is there a more elegant way of ensuring a constructor is always called with at least one value than what I've got here? I have done it this way as I want a compiler error if no values are provided.

public class MyClass
{
    private readonly List<string> _things = new List<string>();
    public string[] Things { get { return _things.ToArray(); } }

    public MyClass(string thing, params string[] things)
    {
        _things.Add(thing);
        _things.AddRange(things);
    }
}

EDIT

Based on the comments, I have changed the code to this ...

public class Hypermedia : Attribute
{
    private readonly Rel[] _relations;
    public IEnumerable<Rel> Relations { get { return _relations; } }

    public Hypermedia(Rel relation, params Rel[] relations)
    {
        var list = new List<Rel> {relation};
        list.AddRange(relations);
        _relations = list.ToArray();
    }
}

Apologies for editing the code before in an attempt to hide what I was trying to do. It's easier to just paste straight from my code editor!

Answer 1

What about Code Contracts?

public MyClass(params string[] things)
{
    Contract.Requires(things != null && things.Any());
    _things.AddRange(things);
}

Code contracts include classes for marking your code, a static analyzer for compile-time analysis, and a runtime analyzer.

At least you'll get the warning from static analyzer. And you can turn off runtime analysis in Release mode to avoid performance hit.