KeyedCollection

KeyedCollection

protected KeyedCollection(IDictionary<TKey, TValue> innerDictionary)

keyedCollection = KeyedCollection(innerDictionary)

Represents an abstract dictionary-backed collection that manages key-value pairs with customizable behavior.

KeyedCollection

protected KeyedCollection(IEqualityComparer<TKey> comparer)

keyedCollection = KeyedCollection(comparer)

Initializes a new instance of the KeyedCollection class with a specified key comparer.

comparer

The equality comparer for keys, or null to use the default comparer.

KeyedCollection

protected KeyedCollection()

keyedCollection = KeyedCollection()

Initializes a new instance of the KeyedCollection class with a default dictionary.

Count

public virtual int Count { get; }

value = keyedCollection.Count

Gets the number of key-value pairs in the collection.

InnerDictionary

protected IDictionary<TKey, TValue> InnerDictionary { get; }

value = keyedCollection.InnerDictionary

Gets the underlying dictionary that stores the key-value pairs.

Item

public virtual TValue Item { get; set; }

value = keyedCollection.Item
keyedCollection.Item = value

Gets or sets the value associated with the specified key.

key

The key whose value is to be retrieved or set.

戻り値: The value associated with the specified key.

Keys

public ICollection<TKey> Keys { get; }

value = keyedCollection.Keys

Gets a collection containing the keys in the dictionary.

System#Collections#Generic#ICollection{System#Collections#Generic#KeyValuePair{TKey,TValue}}#IsReadOnly

Gets a value indicating whether the collection is read-only.

Values

public ICollection<TValue> Values { get; }

value = keyedCollection.Values

Gets a collection containing the values in the dictionary.

Add

public void Add(KeyValuePair<TKey, TValue> item)

keyedCollection.Add(item)

Adds a key-value pair to the collection.

item

The key-value pair to add.

Add

public virtual void Add(TKey key, TValue value)

keyedCollection.Add(key, value)

Adds the specified key-value pair to the collection.

key

The key to add.

value

The value to add.

CanAdd

protected virtual bool CanAdd(TKey key, TValue value)

result = keyedCollection.CanAdd(key, value)

Determines whether a key-value pair can be added to the collection.

key

The key to check.

value

The value to check.

戻り値: True if the pair can be added; otherwise, false.

Clear

public virtual void Clear()

keyedCollection.Clear()

Removes all items from the collection.

Contains

public bool Contains(KeyValuePair<TKey, TValue> item)

result = keyedCollection.Contains(item)

Determines whether the collection contains a specific key-value pair.

item

The key-value pair to locate.

戻り値: True if the pair is found; otherwise, false.

ContainsKey

public bool ContainsKey(TKey key)

result = keyedCollection.ContainsKey(key)

Determines whether the collection contains an element with the specified key.

key

The key to locate.

戻り値: True if the key is found; otherwise, false.

CopyTo

public void CopyTo(KeyValuePair<TKey, TValue>[] array, int arrayIndex)

keyedCollection.CopyTo(array, arrayIndex)

Copies the elements of the collection to an array, starting at the specified index.

array

The destination array to copy to.

arrayIndex

The zero-based index in the array at which copying begins.

GetEnumerator

public virtual IEnumerator<KeyValuePair<TKey, TValue>> GetEnumerator()

result = keyedCollection.GetEnumerator()

Returns an enumerator that iterates through the collection.

戻り値: An IEnumerator that can be used to iterate through the collection.

OnAdded

protected virtual void OnAdded(TKey key, TValue value)

keyedCollection.OnAdded(key, value)

Called after a key-value pair has been added to the collection.

key

The key that was added.

value

The value that was added.

OnAdding

protected virtual void OnAdding(TKey key, TValue value)

keyedCollection.OnAdding(key, value)

Called before adding a key-value pair to the collection.

key

The key being added.

value

The value being added.

OnCleared

protected virtual void OnCleared()

keyedCollection.OnCleared()

Called after all items have been cleared from the collection.

OnClearing

protected virtual void OnClearing()

keyedCollection.OnClearing()

Called before clearing all items from the collection.

OnRemoved

protected virtual void OnRemoved(TKey key, TValue value)

keyedCollection.OnRemoved(key, value)

Called after a key-value pair has been removed from the collection.

key

The key that was removed.

value

The value that was removed.

OnRemoving

protected virtual void OnRemoving(TKey key, TValue value)

keyedCollection.OnRemoving(key, value)

Called before removing a key-value pair from the collection.

key

The key being removed.

value

The value being removed.

OnSetted

protected virtual void OnSetted(TKey key, TValue value)

keyedCollection.OnSetted(key, value)

Called after a new value has been set for an existing key.

key

The key that was updated.

value

The new value that was set.

OnSetting

protected virtual void OnSetting(TKey key, TValue value)

keyedCollection.OnSetting(key, value)

Called before setting a new value for an existing key.

key

The key being updated.

value

The new value to set.

Remove

public bool Remove(KeyValuePair<TKey, TValue> item)

result = keyedCollection.Remove(item)

Removes a specific key-value pair from the collection.

item

The key-value pair to remove.

戻り値: True if the pair was found and removed; otherwise, false.

Remove

public virtual bool Remove(TKey key)

result = keyedCollection.Remove(key)

Removes the value with the specified key from the collection.

key

The key of the element to remove.

戻り値: True if the element was found and removed; otherwise, false.

System#Collections#IEnumerable#GetEnumerator()

Returns an enumerator that iterates through the collection (non-generic version).

戻り値: An IEnumerator that can be used to iterate through the collection.

TryGetValue

public virtual bool TryGetValue(TKey key, TValue value)

result = keyedCollection.TryGetValue(key, value)

Attempts to retrieve the value associated with the specified key.

key

The key to locate.

value

When this method returns, contains the value associated with the key if found; otherwise, the default value of .

戻り値: True if the key was found; otherwise, false.