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.NET Framework Class Library
DataGridUnloadingRow Event

Occurs when a DataGridRow object becomes available for reuse.

Namespace:   System.Windows.Controls
Assembly:  PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
Syntax
Public Event UnloadingRow As [%$TOPIC/cc672857_en-us_VS_110_2_0_0_0_0%](Of [%$TOPIC/cc672857_en-us_VS_110_2_0_0_0_1%])
public event [%$TOPIC/cc672857_en-us_VS_110_2_0_1_0_0%]<[%$TOPIC/cc672857_en-us_VS_110_2_0_1_0_1%]> UnloadingRow
public:
 event [%$TOPIC/cc672857_en-us_VS_110_2_0_2_0_0%]<[%$TOPIC/cc672857_en-us_VS_110_2_0_2_0_1%]^>^ UnloadingRow {
	void add ([%$TOPIC/cc672857_en-us_VS_110_2_0_2_0_2%]<[%$TOPIC/cc672857_en-us_VS_110_2_0_2_0_3%]^>^ value);
	void remove ([%$TOPIC/cc672857_en-us_VS_110_2_0_2_0_4%]<[%$TOPIC/cc672857_en-us_VS_110_2_0_2_0_5%]^>^ value);
}
member UnloadingRow : IEvent<[%$TOPIC/cc672857_en-us_VS_110_2_0_3_0_0%]<[%$TOPIC/cc672857_en-us_VS_110_2_0_3_0_1%]>,
    [%$TOPIC/cc672857_en-us_VS_110_2_0_3_0_2%]>
<object UnloadingRow="[%$TOPIC/cc672857_en-us_VS_110_2_0_4_0_0%]<[%$TOPIC/cc672857_en-us_VS_110_2_0_4_0_1%]>" .../>
Remarks

To improve performance, the EnableRowVirtualization property is set to true by default. When the EnableRowVirtualization property is set to true, the DataGrid does not instantiate a DataGridRow object for each data item in the bound data source. Instead, the DataGrid creates DataGridRow objects only when they are needed, and reuses them as much as it can. For example, the DataGrid creates a DataGridRow object for each data item that is currently in view and recycles the row when it scrolls out of view.

This event enables you to make any necessary changes to a row before it is reused. You typically use this event to undo any changes that were made in a LoadingRow event handler.

Version Information

.NET Framework

Supported in: 4.5, 4

.NET Framework Client Profile

Supported in: 4
Platforms

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.