ObservableCollectionEx

Count

public int Count { get; }

value = observableCollectionEx.Count

Gets the number of elements contained in the collection.

IsReadOnly

public bool IsReadOnly { get; }

value = observableCollectionEx.IsReadOnly

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

Item

public TItem Item { get; set; }

value = observableCollectionEx.Item
observableCollectionEx.Item = value

Gets or sets the element at the specified index.

index

The zero-based index of the element to get or set.

Rückgabe: The element at the specified index.

Add

public virtual void Add(TItem item)

observableCollectionEx.Add(item)

Adds an item to the collection.

item

The item to add.

AddRange

public virtual void AddRange(IEnumerable<TItem> items)

observableCollectionEx.AddRange(items)

Adds a range of items to the collection.

items

The items to add.

Clear

public virtual void Clear()

observableCollectionEx.Clear()

Removes all items from the collection.

Contains

public bool Contains(TItem item)

result = observableCollectionEx.Contains(item)

Determines whether the collection contains a specific value.

item

The item to locate.

Rückgabe: true if the item is found; otherwise, false.

CopyTo

public void CopyTo(TItem[] array, int arrayIndex)

observableCollectionEx.CopyTo(array, arrayIndex)

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

array

The destination array.

arrayIndex

The zero-based index at which copying begins.

GetEnumerator

public IEnumerator<TItem> GetEnumerator()

result = observableCollectionEx.GetEnumerator()

Returns an enumerator that iterates through the collection.

Rückgabe: An enumerator for the collection.

IndexOf

public int IndexOf(TItem item)

result = observableCollectionEx.IndexOf(item)

Determines the index of a specific item in the collection.

item

The item to locate.

Rückgabe: The index of the item if found; otherwise, -1.

Insert

public void Insert(int index, TItem item)

observableCollectionEx.Insert(index, item)

Inserts an item into the collection at the specified index.

index

The index at which the item should be inserted.

item

The item to insert.

OnCollectionChanged

private void OnCollectionChanged(NotifyCollectionChangedEventArgs args)

observableCollectionEx.OnCollectionChanged(args)

Raises the CollectionChanged event.

args

Details about the change.

OnCollectionReset

private void OnCollectionReset()

observableCollectionEx.OnCollectionReset()

Raises the CollectionChanged event with a reset action.

OnPropertyChanged

protected void OnPropertyChanged(string propertyName)

observableCollectionEx.OnPropertyChanged(propertyName)

Raises the PropertyChanged event.

propertyName

The name of the property that changed.

OnRemove

private void OnRemove(IList<TItem> items, int index)

observableCollectionEx.OnRemove(items, index)

Raises the collection changed event for a removal.

items

The items removed.

index

The index from which the items were removed.

ProcessCollectionChanged

protected virtual void ProcessCollectionChanged(IEnumerable<NotifyCollectionChangedEventHandler> subscribers, NotifyCollectionChangedEventArgs args)

observableCollectionEx.ProcessCollectionChanged(subscribers, args)

Processes the NotifyCollectionChangedEventHandler subscribers.

subscribers

The collection of subscribers.

args

Details about the change.

Remove

public virtual bool Remove(TItem item)

result = observableCollectionEx.Remove(item)

Removes the first occurrence of a specific item from the collection.

item

The item to remove.

Rückgabe: true if the item was successfully removed; otherwise, false.

RemoveAt

public void RemoveAt(int index)

observableCollectionEx.RemoveAt(index)

Removes the item at the specified index of the collection.

index

The zero-based index of the item to remove.

RemoveRange

public virtual void RemoveRange(IEnumerable<TItem> items)

observableCollectionEx.RemoveRange(items)

Removes a range of items from the collection.

items

The items to remove.

RemoveRange

public virtual int RemoveRange(int index, int count)

result = observableCollectionEx.RemoveRange(index, count)

Removes a specified range of items starting at a given index.

index

The starting index.

count

The number of items to remove.

Rückgabe: The number of removed items.

AddedRange

public event Action<IEnumerable<TItem>> AddedRange

observableCollectionEx.AddedRange += handler

Occurs after a range of items has been added to the collection.

CollectionChanged

public event NotifyCollectionChangedEventHandler CollectionChanged

observableCollectionEx.CollectionChanged += handler

Occurs when the collection changes.

PropertyChanged

public event PropertyChangedEventHandler PropertyChanged

observableCollectionEx.PropertyChanged += handler

Occurs when a property value changes.

RemovedRange

public event Action<IEnumerable<TItem>> RemovedRange

observableCollectionEx.RemovedRange += handler

Occurs after a range of items has been removed from the collection.