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ListView.RetrieveVirtualItem Event

Occurs when the ListView is in virtual mode and requires a ListViewItem.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

public event RetrieveVirtualItemEventHandler RetrieveVirtualItem
/** @event */
public void add_RetrieveVirtualItem (RetrieveVirtualItemEventHandler value)

/** @event */
public void remove_RetrieveVirtualItem (RetrieveVirtualItemEventHandler value)

In JScript, you can handle the events defined by a class, but you cannot define your own.
Not applicable.

Exception typeCondition

InvalidOperationException

The Item property is not set to an item when the RetrieveVirtualItem event is handled.

When a ListView object is in virtual mode, it creates ListViewItem objects dynamically instead of using the Items collection. This event is raised when the object must create a ListViewItem object. A handler for this event should create the appropriate ListViewItem or retrieve it from the cache, and pass it back by way of the Item property.

For more information about handling events, see Consuming Events.

The following code example demonstrates a handler for this event. In this example, listView1 needs each ListViewItem to display the square of its index. This code example is part of a larger example provided for the VirtualMode property.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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