true if the data-source provider can provide the item count; false otherwise. By default, false.
Remarks
If the count is not known, CanCount should be set to false rather than returning a a null reference (Nothing in Visual Basic) or invalid value.
Requirements
Target Platforms: Windows 11, Windows 10, 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