Gets or sets a converter to apply to the property value or the item to produce the final value that is used to determine which group(s) an item belongs to.
Assembly: PresentationFramework (in PresentationFramework.dll)
If you want to change the value that is eventually used for group you can use the property to supply a value converter. For example, you may want to group items based on the first letter of a name. If the PropertyName property is not set, the item itself is passed to the value converter. The converter may return a collection, which indicates the items can appear in more than one group.
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.