public virtual bool BeforeRegionClear(
	RegionEvent<TKey, TValue> ev
)

Public Overridable Function BeforeRegionClear ( 
	ev As RegionEvent(Of TKey, TValue)
) As Boolean

public:
virtual bool BeforeRegionClear(
	RegionEvent<TKey, TValue>^ ev
)

abstract BeforeRegionClear : 
        ev : RegionEvent<'TKey, 'TValue> -> bool 
override BeforeRegionClear : 
        ev : RegionEvent<'TKey, 'TValue> -> bool