private void OnDictionaryItemChanged(string key, object oldValue, object newValue)
{
if (DictionaryChanged != null)
{
var eventArgs = NotifyDictionaryChangedEventArgs <string, object> .ForValueChangedAction(key, oldValue, newValue);
DictionaryChanged(this, eventArgs);
}
}
/// <summary>Gets or sets the item with the specified <paramref name="key" />.</summary>
/// <param name="key">The key of the item to get or set.</param>
/// <returns>The item with the specified <paramref name="key" />.</returns>
/// <exception cref="ArgumentNullException"><paramref name="key" /> is <c>null</c>.</exception>
/// <exception cref="KeyNotFoundException">On <c>get</c>: An item with the specified <paramref name="key" /> could not be found.</exception>
/// <exception cref="NotSupportedException">On <c>set</c>: The instance is <c>read-only</c>.</exception>
public object this[string key]
{
get
{
return(_items[key]);
}
set
{
if (_items.ContainsKey(key))
{
var oldValue = _items[key];
_items[key] = value;
OnDictionaryChanged(NotifyDictionaryChangedEventArgs <string, object> .ForValueChangedAction(key, oldValue, value));
}
else
{
_items[key] = value;
OnDictionaryChanged(NotifyDictionaryChangedEventArgs <string, object> .ForAddAction(key));
}
}
}
