<ExtensionAttribute()>
Public Overloads Shared Function SelectMany( _
   ByVal source As IQueryable, _
   ByVal selector As IProjectionSelector _
) As IQueryable

Dim source As IQueryable
Dim selector As IProjectionSelector
Dim value As IQueryable
 
value = QueryableExtensions.SelectMany(source, selector)

[ExtensionAttribute()]
public static IQueryable SelectMany( 
   IQueryable source,
   IProjectionSelector selector
)

[ExtensionAttribute()]
public:
static IQueryable^ SelectMany( 
   IQueryable^ source,
   IProjectionSelector^ selector
) 

var mgr = new DomainModelEntityManager();

var entityType = typeof(Customer);
var baseQuery = EntityQuery.Create(entityType, mgr);
var query = baseQuery.Take(2).SelectMany(new ProjectionSelector("OrderSummaries"));
var results = query.Execute();