| Overload | Description | 
|---|---|
| Count(ITypedEntityQuery) | Returns the number of elements in a sequence. | 
| Count<T>(IEntityQuery<T>) | Returns the number of elements in a sequence. | 
| Count(ITypedEntityQuery,IPredicateDescription) | Returns the number of elements in a sequence that satisfy a condition. | 
Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family