Declaration
public void Add(
    string key,
    ValuesCollection<TValue> value
)Summary
            Adds all items from the specified value collection, associating them with
            the specified key. Throws an exception if the specified key already has items
            associated with it.
            
Parameters
| string | key | Key to associate the items with. | 
| ValuesCollection<TValue> | value | Collection containing the values to add. |