Assembly: System.Web (in System.Web.dll)
This property is commonly used when you need to programmatically manipulate the header row, for example, when adding custom content. Any modification to the property must be performed after the GridView control has been rendered; otherwise, the GridView control will overwrite any changes.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, 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.