Class ItemsSourceView

Namespace

Avalonia.Controls

Assembly

Avalonia.Controls.dll

Represents a standardized view of the supported interactions between an items collection and an items control.

public class ItemsSourceView : IReadOnlyList<object?>, IReadOnlyCollection<object?>, IEnumerable<object?>, IList, ICollection, IEnumerable, INotifyCollectionChanged

Inheritance

object

ItemsSourceView

Implements

IReadOnlyList<object>

IReadOnlyCollection<object>

IEnumerable<object>

IList

ICollection

IEnumerable

INotifyCollectionChanged

Derived

ItemCollection

ItemsSourceView<T>

Inherited Members

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Properties

Count

Gets the number of items in the collection.

public int Count { get; }

Property Value

int

Empty

Gets an empty ItemsSourceView

public static ItemsSourceView Empty { get; }

Property Value

ItemsSourceView

this[int]

Retrieves the item at the specified index.

public object? this[int index] { get; }

Parameters

index int

The index.

Property Value

object

The item.

Source

Gets the source collection.

public IList Source { get; }

Property Value

IList

Methods

Contains(object?)

public bool Contains(object? item)

Parameters

item object

Returns

bool

GetAt(int)

Retrieves the item at the specified index.

public object? GetAt(int index)

Parameters

index int

The index.

Returns

object

The item.

GetEnumerator()

public IEnumerator<object?> GetEnumerator()

Returns

IEnumerator<object>

GetOrCreate(IEnumerable?)

Gets or creates an ItemsSourceView for the specified enumerable.

public static ItemsSourceView GetOrCreate(IEnumerable? items)

Parameters

items IEnumerable

The enumerable.

Returns

ItemsSourceView

Remarks

This method handles the following three cases:

• If items is null, returns Empty
• If items is an ItemsSourceView returns the existing ItemsSourceView
• Otherwise creates a new ItemsSourceView

GetOrCreate<T>(IEnumerable<T>?)

Gets or creates an ItemsSourceView<T> for the specified enumerable.

public static ItemsSourceView<T> GetOrCreate<T>(IEnumerable<T>? items)

Parameters

items IEnumerable<T>

The enumerable.

Returns

ItemsSourceView<T>

Type Parameters

T

Remarks

This method handles the following three cases:

• If items is null, returns Empty
• If items is an ItemsSourceView returns the existing ItemsSourceView
• Otherwise creates a new ItemsSourceView

GetOrCreate<T>(IEnumerable?)

Gets or creates an ItemsSourceView<T> for the specified enumerable.

public static ItemsSourceView<T> GetOrCreate<T>(IEnumerable? items)

Parameters

items IEnumerable

The enumerable.

Returns

ItemsSourceView<T>

Type Parameters

T

Remarks

This method handles the following three cases:

• If items is null, returns Empty
• If items is an ItemsSourceView returns the existing ItemsSourceView
• Otherwise creates a new ItemsSourceView

IndexOf(object?)

public int IndexOf(object? item)

Parameters

item object

Returns

int

Events

CollectionChanged

Occurs when the collection has changed to indicate the reason for the change and which items changed.

public event NotifyCollectionChangedEventHandler? CollectionChanged

Event Type

NotifyCollectionChangedEventHandler