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GridView::IPersistedSelector::DataKey Property

For a description of this member, see IPersistedSelector::DataKey.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)
private:
virtual property DataKey^ DataKey {
	DataKey^ get () sealed = IPersistedSelector::DataKey::get;
	void set (DataKey^ value) sealed = IPersistedSelector::DataKey::set;
}
<asp:GridView DataKey="DataKey" />

Property Value

Type: System.Web.UI.WebControls::DataKey
The data-key value for the persisted selected record in a data-bound control.

Implements

IPersistedSelector::DataKey

You can specify how selected rows are persisted when the GridView control is in paging mode. By default, row selection is based on row index. The same row (for example, the third row) is selected on each page. Alternatively, you can enable persistence based on the data key of the selected row. In that case, if you select row 3 on page 1 and you move to page 2, no row is selected on page 2. If you move back to page 1, row 3 is still selected. To enable this functionality, set this property to true.

NoteNote

In versions 2.0, 3.0, and 3.5 of ASP.NET, row selection was based only on row index. By default, row selection in ASP.NET 4 is based on index for backward compatibility.

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5 SP1, 3.0 SP2, 2.0 SP2

Windows Phone 8.1, Windows Phone 8, 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.

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