Class ObservableList<T>

Extends List{T} with events.

Inheritance
System.Object
ObservableList<T>
TabGroupCollection
Implements
System.Collections.IList
System.Collections.ICollection
System.Collections.IEnumerable
Namespace: Syncfusion.Windows.Forms.Collections
Assembly: Syncfusion.Shared.Base.dll
Syntax
public class ObservableList<T> : Object, IList, ICollection, IEnumerable
Type Parameters
Name Description
T

Type of collection elements.

Constructors

ObservableList()

Declaration
public ObservableList()

ObservableList(Int32)

Declaration
public ObservableList(int capacity)
Parameters
Type Name Description
System.Int32 capacity

Properties

Capacity

Declaration
public int Capacity { get; set; }
Property Value
Type
System.Int32

Count

Declaration
public int Count { get; }
Property Value
Type
System.Int32

Item[Int32]

Gets or sets the element at the specified index.

Declaration
public T this[int index] { get; set; }
Parameters
Type Name Description
System.Int32 index
Property Value
Type
T

List

Declaration
protected IList List { get; }
Property Value
Type
System.Collections.IList

Methods

Add(T)

Add method.

Declaration
public int Add(T value)
Parameters
Type Name Description
T value
Returns
Type
System.Int32

Clear()

Removes all items from the list.

Declaration
public void Clear()

Contains(T)

Determines whether the list contains a specific value.

Declaration
public bool Contains(T value)
Parameters
Type Name Description
T value
Returns
Type
System.Boolean

GetEnumerator()

Declaration
public IEnumerator GetEnumerator()
Returns
Type
System.Collections.IEnumerator

IndexOf(T)

Determines the index of a specific item in the list.

Declaration
public int IndexOf(T value)
Parameters
Type Name Description
T value
Returns
Type
System.Int32

Insert(Int32, T)

Inserts an item to the list at the specified index.

Declaration
public void Insert(int index, T value)
Parameters
Type Name Description
System.Int32 index
T value

OnClear()

Declaration
protected virtual void OnClear()

OnClearCompleted()

Declaration
protected virtual void OnClearCompleted()

OnInsert(Int32, Object)

Performs additional custom processes before inserting a new element into the collection.

Declaration
protected virtual bool OnInsert(int index, object value)
Parameters
Type Name Description
System.Int32 index
System.Object value
Returns
Type Description
System.Boolean

TRUE to insert object

OnInsertComplete(Int32, Object)

Fires ItemAdded event.

Declaration
protected virtual void OnInsertComplete(int index, object value)
Parameters
Type Name Description
System.Int32 index
System.Object value

OnRemove(Int32, Object)

Performs additional custom processes when removing an element from the collection.

Declaration
protected virtual bool OnRemove(int index, object value)
Parameters
Type Name Description
System.Int32 index
System.Object value
Returns
Type Description
System.Boolean

TRUE to remove object

OnRemoveComplete(Int32, Object)

Fires ItemRemoved event.

Declaration
protected virtual void OnRemoveComplete(int index, object value)
Parameters
Type Name Description
System.Int32 index
System.Object value

Remove(T)

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

Declaration
public void Remove(T value)
Parameters
Type Name Description
T value

RemoveAt(Int32)

Removes item at the specified index.

Declaration
public void RemoveAt(int index)
Parameters
Type Name Description
System.Int32 index

Sort(IComparer)

Declaration
public void Sort(IComparer comparer)
Parameters
Type Name Description
System.Collections.IComparer comparer

Events

ItemAdded

Fired when new item is added to the collection.

Declaration
public event EventHandler<ListItemEventArgs<T>> ItemAdded
Event Type
Type
System.EventHandler<ListItemEventArgs<T>>

ItemRemoved

Fired when item is removed from collection.

Declaration
public event EventHandler<ListItemEventArgs<T>> ItemRemoved
Event Type
Type
System.EventHandler<ListItemEventArgs<T>>

Implements

System.Collections.IList
System.Collections.ICollection
System.Collections.IEnumerable