CollectionChanged Event

Summary

Occurs when the collection changes.

Syntax

C++/CLI

Java

Python

public event EventHandler<AnnNotifyCollectionChangedEventArgs> CollectionChanged

public void addCollectionChangedListener(AnnNotifyCollectionChangedListener listener) 
public void removeCollectionChangedListener(AnnNotifyCollectionChangedListener listener)

public:  
   event EventHandler<AnnNotifyCollectionChangedEventArgs^>^ CollectionChanged

def CollectionChanged(sender,e): # sender: AnnObservableCollection`1 e: AnnNotifyCollectionChangedEventArgs

Event Data

The event handler receives an argument of type AnnNotifyCollectionChangedEventArgs containing data related to this event. The following AnnNotifyCollectionChangedEventArgs properties provide information specific to this event.

Property	Description
Action	Gets the action that caused the event.
NewItems	Gets the list of new items involved in the change.
NewStartingIndex	Gets the index at which the change occurred.
OldItems	Gets the list of items affected by a Replace, Remove, or Move action.
OldStartingIndex	Gets the index at which a Move, Remove, or Replace action occurred.

Requirements

Target Platforms

Reference

AnnObservableCollection<T> Class

AnnObservableCollection<T> Members

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Help Version 22.0.2023.7.31

Leadtools.Annotations.Engine Assembly

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