/// <summary>
/// Gets or sets the element with the specified key.
/// </summary>
/// <returns>
/// The element with the specified key.
/// </returns>
/// <param name = "key">The key of the element to get or set.</param>
/// <exception cref = "T:System.ArgumentNullException"><paramref name = "key" /> is null.</exception>
/// <exception cref = "T:System.Collections.Generic.KeyNotFoundException">The property is retrieved and <paramref name = "key" /> is not found.</exception>
/// <exception cref = "T:System.NotSupportedException">The property is set and the <see cref = "T:System.Collections.Generic.IDictionary`2" /> is read-only.</exception>
public TValue this[TKey key]
{
get
{
TValue value;
TryGetValue(key, out value);
return(value);
}
set
{
var oldItem = new KeyValuePair <TKey, TValue>(key, this[key]);
var newItem = new KeyValuePair <TKey, TValue>(key, value);
var e = new NotifyDictionaryChangingEventArgs <TKey, TValue>(NotifyCollectionChangedAction.Replace,
newItem,
oldItem);
OnDictionaryChanging(e);
Dictionary[key] = value;
OnDictionaryChanged(
new NotifyDictionaryChangedEventArgs <TKey, TValue>(NotifyCollectionChangedAction.Replace,
newItem,
oldItem));
OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Replace,
newItem,
oldItem));
}
}
/// <summary>
/// Raises the <see cref = "DictionaryChanging" /> event.
/// </summary>
/// <param name = "e">The <see cref = "Dnp.Collections.NotifyDictionaryChangingEventArgs<TKey,TValue>" /> instance containing the event data.</param>
protected void OnDictionaryChanging(NotifyDictionaryChangingEventArgs <TKey, TValue> e)
{
DictionaryChangingEventHandler <TKey, TValue> handler = DictionaryChanging;
if (handler != null)
{
handler(this, e);
}
}
/// <summary>
/// Removes all items from the <see cref = "T:System.Collections.Generic.ICollection`1" />.
/// </summary>
/// <exception cref = "T:System.NotSupportedException">The <see cref = "T:System.Collections.Generic.ICollection`1" /> is read-only. </exception>
public void Clear()
{
var e = new NotifyDictionaryChangingEventArgs <TKey, TValue>(NotifyCollectionChangedAction.Reset);
OnDictionaryChanging(e);
Dictionary.Clear();
OnDictionaryChanged(new NotifyDictionaryChangedEventArgs <TKey, TValue>(
NotifyCollectionChangedAction.Reset));
OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
}
/// <summary>
/// Adds an element with the provided key and value to the <see cref = "T:System.Collections.Generic.IDictionary`2" />.
/// </summary>
/// <param name = "key">The object to use as the key of the element to add.</param>
/// <param name = "value">The object to use as the value of the element to add.</param>
/// <exception cref = "T:System.ArgumentNullException"><paramref name = "key" /> is null.</exception>
/// <exception cref = "T:System.ArgumentException">An element with the same key already exists in the <see cref = "T:System.Collections.Generic.IDictionary`2" />.</exception>
/// <exception cref = "T:System.NotSupportedException">The <see cref = "T:System.Collections.Generic.IDictionary`2" /> is read-only.</exception>
public void Add(TKey key, TValue value)
{
var e = new NotifyDictionaryChangingEventArgs <TKey, TValue>(NotifyCollectionChangedAction.Add, key, value);
OnDictionaryChanging(e);
Dictionary.Add(key, value);
var item = new KeyValuePair <TKey, TValue>(key, value);
OnDictionaryChanged(new NotifyDictionaryChangedEventArgs <TKey, TValue>(NotifyCollectionChangedAction.Add,
item));
OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, item));
}
/// <summary>
/// Adds a range of items to this instance.
/// </summary>
/// <param name = "dictionary">The dictionary.</param>
public void AddRange(IDictionary <TKey, TValue> dictionary)
{
var e = new NotifyDictionaryChangingEventArgs <TKey, TValue>(NotifyCollectionChangedAction.Add, dictionary);
OnDictionaryChanging(e);
foreach (KeyValuePair <TKey, TValue> pair in dictionary)
{
Dictionary.Add(pair.Key, pair.Value);
}
OnDictionaryChanged(new NotifyDictionaryChangedEventArgs <TKey, TValue>(NotifyCollectionChangedAction.Add,
dictionary));
OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, dictionary));
}
/// <summary>
/// Removes the range of items specified.
/// </summary>
/// <param name = "dictionary">The dictionary.</param>
public void RemoveRange(IDictionary <TKey, TValue> dictionary)
{
var e = new NotifyDictionaryChangingEventArgs <TKey, TValue>(NotifyCollectionChangedAction.Remove,
dictionary);
OnDictionaryChanging(e);
foreach (TKey local in dictionary.Keys)
{
Dictionary.Remove(local);
}
OnDictionaryChanged(
new NotifyDictionaryChangedEventArgs <TKey, TValue>(NotifyCollectionChangedAction.Remove, dictionary));
OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, dictionary));
}
/// <summary>
/// Removes the element with the specified key from the <see cref = "T:System.Collections.Generic.IDictionary`2" />.
/// </summary>
/// <returns>
/// true if the element is successfully removed; otherwise, false. This method also returns false if <paramref name = "key" /> was not found in the original <see cref = "T:System.Collections.Generic.IDictionary`2" />.
/// </returns>
/// <param name = "key">The key of the element to remove.</param>
/// <exception cref = "T:System.ArgumentNullException"><paramref name = "key" /> is null.</exception>
/// <exception cref = "T:System.NotSupportedException">The <see cref = "T:System.Collections.Generic.IDictionary`2" /> is read-only.</exception>
public bool Remove(TKey key)
{
if (!Keys.Contains(key))
{
return(false);
}
TValue local = this[key];
var item = new KeyValuePair <TKey, TValue>(key, local);
var e = new NotifyDictionaryChangingEventArgs <TKey, TValue>(NotifyCollectionChangedAction.Remove, item);
OnDictionaryChanging(e);
bool flag = Dictionary.Remove(key);
OnDictionaryChanged(
new NotifyDictionaryChangedEventArgs <TKey, TValue>(NotifyCollectionChangedAction.Remove, item));
OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, item));
return(flag);
}
