DataStoreChangedHandlerTItem, TCollection Class

Class to help implement change handling for a IDataStoreT

Inheritance Hierarchy

SystemObject
EtoCollectionChangedHandlerTItem, TCollection
EtoDataStoreChangedHandlerTItem, TCollection

Namespace: Eto
Assembly: Eto (in Eto.dll) Version: 2.5.3-dev

Syntax

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public abstract class DataStoreChangedHandler<TItem, TCollection> : CollectionChangedHandler<TItem, TCollection>, 
	IEnumerable<TItem>, IEnumerable
where TCollection : class, Object, IDataStore<TItem>

Public MustInherit Class DataStoreChangedHandler(Of TItem, TCollection As {Class, Object, IDataStore(Of TItem)})
	Inherits CollectionChangedHandler(Of TItem, TCollection)
	Implements IEnumerable(Of TItem), IEnumerable

[<AbstractClassAttribute>]
type DataStoreChangedHandler<'TItem, 'TCollection when 'TCollection : not struct and Object and IDataStore<'TItem>> =  
    class
        inherit CollectionChangedHandler<'TItem, 'TCollection>
        interface IEnumerable<'TItem>
        interface IEnumerable
    end

Type Parameters

TItem: Type of items in the data store
TCollection: Type of the data store to detect changes on

The DataStoreChangedHandlerTItem, TCollection type exposes the following members.

Constructors

	Name	Description
	DataStoreChangedHandlerTItem, TCollection	Initializes a new instance of the DataStoreChangedHandlerTItem, TCollection class

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Properties

	Name	Description
	Count	Gets the count of the items in the current registered collection. (Overrides CollectionChangedHandlerTItem, TCollectionCount.)

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Methods

	Name	Description
	GetEnumerator	Gets the enumerator.
	InternalElementAt	Gets the element at the specified index. (Overrides CollectionChangedHandlerTItem, TCollectionInternalElementAt(Int32).)
	InternalIndexOf	Implements the mechanism for finding the index of an item (the slow way) (Overrides CollectionChangedHandlerTItem, TCollectionInternalIndexOf(TItem).)
	OnRegisterCollection	Called when the collection is registered (Overrides CollectionChangedHandlerTItem, TCollectionOnRegisterCollection(EventArgs).)

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Remarks

This is used for the platform handler of controls that use collections. This class helps detect changes to a collection so that the appropriate action can be taken to update the UI with the changes. Use this class as a base when you are detecting changes for an IDataStoreT. If the object also implements INotifyCollectionChanged, it will get changed events. Otherwise, you must register a new collection each time.

Reference

Eto Namespace

DataStoreChangedHandlerAddLanguageSpecificTextSet("LSTC496D3E6_0?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");TItem, TCollectionAddLanguageSpecificTextSet("LSTC496D3E6_1?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)"); Class

Type Parameters

Reference

DataStoreChangedHandlerTItem, TCollection Class