/// <summary>
/// Gets the collection of values associated with the specified key, or an empty collection
/// if no such items exist. Returns true iff any items are associated with the key.
/// </summary>
public bool TryGetValue(string key, out ValuesCollection <TValue> value)
{
if (_items.ContainsKey(key) && _items[key].Count > 0)
{
value = new ValuesCollection <TValue>(_items[key], _isReadOnly);
return(true);
}
else
{
value = default(ValuesCollection <TValue>);
return(false);
}
}
/// <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.
/// </summary>
/// <param name="key">Key to associate the items with.</param>
/// <param name="value">Collection containing the values to add.</param>
public void Add(string key, ValuesCollection <TValue> value)
{
if (_isReadOnly)
{
throwNonWritable();
}
if (_items.ContainsKey(key) && _items[key].Count == 0)
{
_items[key].AddRange(value);
}
else
{
_items.Add(key, new List <TValue>(value));
}
}