<ExtensionAttribute()>
Public Overloads Shared Function Where(Of TSource)( _
   ByVal source As IEntityQuery(Of TSource), _
   ByVal predicateDescription As IPredicateDescription _
) As IEntityQuery(Of TSource)

Dim source As IEntityQuery(Of TSource)
Dim predicateDescription As IPredicateDescription
Dim value As IEntityQuery(Of TSource)
 
value = EntityQueryExtensions.Where(Of TSource)(source, predicateDescription)

[ExtensionAttribute()]
public static IEntityQuery<TSource> Where<TSource>( 
   IEntityQuery<TSource> source,
   IPredicateDescription predicateDescription
)

[ExtensionAttribute()]
public:
static IEntityQuery<TSource^>^ Wheregeneric<typename TSource>
( 
   IEntityQuery<TSource^>^ source,
   IPredicateDescription^ predicateDescription
) 

public void WherePredicateQuery() {
  var mgr = new DomainModelEntityManager();
  var predicate = PredicateBuilder.Make(typeof(Customer), "Country", FilterOperator.StartsWith, "U");
  var query = mgr.Customers.Where(predicate);
  var list = query.ToList();
}