SimpleObservableCollection<T> Class
Provides a generic collection that provides notifications when items are added or removed.
public class SimpleObservableCollection<T> : Collection<T> where T : class- Type Parameters:
-
T-The type of collection item.
- Inheritance:
- object Collection<T> object
- Derived:
- StructureMatchResultCollection LexicalScopeCollection SearchPatternProviderCollection KeyedObservableCollection<T> SimpleSynchronizedCollection<T>
Constructors
SimpleObservableCollection()
Initializes an instance of the class.
public SimpleObservableCollection()Properties
IsReadOnly
Gets whether the collection is allowed to be modified.
public virtual bool IsReadOnly { get; }Property Value
- bool:
trueif the collection is allowed to be modified; otherwise,false.
Methods
BlockReentrancy()
Disallows reentrant attempts to change this collection.
protected IDisposable BlockReentrancy()Returns
- IDisposable:
An IDisposable object that can be used to dispose of the object.
CheckReadOnly()
Throws an exception if the collection is read-only.
protected virtual void CheckReadOnly()CheckReentrancy()
Checks for reentrant attempts to change this collection.
protected void CheckReentrancy()ClearItems()
Removes all items from the collection.
protected override void ClearItems()InsertItem(int, T)
Inserts an item into the collection at the specified index.
protected override void InsertItem(int index, T item)| Parameter | Type | Description |
|---|---|---|
| index | int | The index at which to insert the item. |
| item | T | The item to insert. |
OnItemAdded(int, T)
Called after an item as been added into the collection.
protected virtual void OnItemAdded(int index, T value)| Parameter | Type | Description |
|---|---|---|
| index | int | The index at which the item is added. |
| value | T | The item that is added. |
OnItemAdding(int, T)
Called before an item as been added into the collection.
protected virtual void OnItemAdding(int index, T value)| Parameter | Type | Description |
|---|---|---|
| index | int | The index at which the item is added. |
| value | T | The item that is added. |
OnItemRemoved(int, T)
Called after an item has been removed from the collection.
protected virtual void OnItemRemoved(int index, T value)| Parameter | Type | Description |
|---|---|---|
| index | int | The index at which the item is removed. |
| value | T | The item that is removed. |
OnItemRemoving(int, T)
Called before an item has been removed from the collection.
protected virtual void OnItemRemoving(int index, T value)| Parameter | Type | Description |
|---|---|---|
| index | int | The index at which the item is removed. |
| value | T | The item that is removed. |
RemoveItem(int)
Removes the item at the specified index.
protected override void RemoveItem(int index)| Parameter | Type | Description |
|---|---|---|
| index | int | The index of the item to remove. |
SetItem(int, T)
Replaces the item at the specified index.
protected override void SetItem(int index, T item)| Parameter | Type | Description |
|---|---|---|
| index | int | The index of the item to replace. |
| item | T | The item with which to replace. |
Events
ItemAdded
Occurs after an item is added to the collection.
public event EventHandler<CollectionChangeEventArgs<T>> ItemAddedEvent Type
ItemAdding
Occurs before an item is added to the collection.
public event EventHandler<CollectionChangeEventArgs<T>> ItemAddingEvent Type
ItemRemoved
Occurs after an item is removed from the collection.
public event EventHandler<CollectionChangeEventArgs<T>> ItemRemovedEvent Type
ItemRemoving
Occurs before an item is removed from the collection.
public event EventHandler<CollectionChangeEventArgs<T>> ItemRemoving