Gets the the underlying value that the cell represents. Note: in order to retrieve the cell's value we use a binding since we don't know about the underlying object. The most performant way to retrieve the cell's value is to grab the row's Data (this.Cell.Row.Data), cast it as your object and grab the actual value manually.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, 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
