For a description of this member, see IPersistedSelector.DataKey.
Assembly: System.Web (in System.Web.dll)
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.
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.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.