C# - how to write a collection (Dictionary?) with one key and two values

What's the easiest way to create a collection of key, value1, value2 ?

Important to me is that it is easy & short to retrieve either value1 or value2 given the pair (please show an example)

I know I can do this -

class MyObject
{
    internal string NameA { get; set; }
    internal string NameB { get; set; }
}


class Other
{
    Dictionary<string, MyObject> MyObjectCollection { get; set; }

   private void function()
    {
        MyObjectCollection = new Dictionary<string, MyObject>()
            { { "key", new MyObject { NameA = "something", NameB = "something else" } } };                
        var valueA = MyObjectCollection["key"].NameA; // = "something"
    }
}

Is there a better way?