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FilterEventHandler Delegate

Represents the method that handles the Filter event.

Namespace: System.Windows.Data
Assembly: PresentationFramework (in presentationframework.dll)

public delegate void FilterEventHandler (
	Object sender,
	FilterEventArgs e
)
/** @delegate */
public delegate void FilterEventHandler (
	Object sender, 
	FilterEventArgs e
)
In XAML, you can use delegates but you cannot define your own.

Parameters

sender

The object that raised the event.

e

Arguments of the event.

The following example shows how to set an event handler for the Filter event. In this example, listingDataView is an instance of CollectionViewSource.

listingDataView.Filter += new FilterEventHandler(ShowOnlyBargainsFilter);

The following shows the implementation of the example ShowOnlyBargainsFilter filter event handler. This event handler filters out AuctionItem objects with CurrentPrice that is 25 or above using the Accepted property.

private void ShowOnlyBargainsFilter(object sender, FilterEventArgs e)
{
    AuctionItem product = e.Item as AuctionItem;
    if (product != null)
    {
        // Filter out products with price 25 or above
        if (product.CurrentPrice < 25)
        {
            e.Accepted = true;
        }
        else
        {
            e.Accepted = false;
        }
    }
}

For the complete example, see Data Binding Demo.

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

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