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CollectionChangeEventArgs::Action Property

 

Gets an action that specifies how the collection changed.

Namespace:   System.ComponentModel
Assembly:  System (in System.dll)

public:
property CollectionChangeAction Action {
	virtual CollectionChangeAction get();
}

This property can have one of the following values:

Action

Property value

An element was added to the collection

CollectionChangeAction.Add

An element was removed from the collection

CollectionChangeAction.Remove

The collection was completely changed

CollectionChangeAction.Refresh

The following code example demonstrates the use of this member. In the example, an event handler reports on the occurrence of the AutoCompleteStringCollection::CollectionChanged event. This report helps you to learn when the event occurs and can assist you in debugging. To report on multiple events or on events that occur frequently, consider replacing MessageBox::Show with Console::WriteLine or appending the message to a multiline TextBox.

To run the example code, paste it into a project that contains an instance of type AutoCompleteStringCollection named AutoCompleteStringCollection1. Then ensure that the event handler is associated with the AutoCompleteStringCollection::CollectionChanged event.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1
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