.NET dictionary with two keys and one value

Question

Is there a dictionary available in .NET that could hold 2 keys and one value. Like

Dictionary(Of TKey, Of TKey, TValue)

I have

Answer 1

As suggested in a comment to your question you could simply use an Object key for your Dictionary:

Dictionary dict = new Dictionary();
dict.Add("abc", 111);
dict.Add(345, 111);

To get a cleaner solution you could wrap this dictionary in a custom class and create your version of Add method:

public void Add(ISet