Metodi Set (LINQ to Entities)

La maggior parte dei metodi Set è supportata nelle query LINQ to Entities, fatta eccezione per i metodi che utilizzano un oggetto EqualityComparer. Per ulteriori informazioni, vedere Operatori di query standard nelle query LINQ to Entities. Nella tabella seguente sono elencati i metodi Set supportati e non supportati.

Operatori supportati e non supportati

Metodo Supporto Firma della funzione Visual Basic Firma del metodo C#

All

Supportato

 
Function All(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Boolean)) _
) As Boolean
 
bool All<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate
)

Any

Supportato

 
Function Any(Of TSource) ( _
source As IQueryable(Of TSource) _
) As Boolean
 
bool Any<TSource>(
this IQueryable<TSource> source
)

Any

Supportato

 
Function Any(Of TSource) ( _
source As IQueryable(Of TSource), _
predicate As Expression(Of Func(Of TSource, Boolean)) _
) As Boolean
 
bool Any<TSource>(
this IQueryable<TSource> source,
Expression<Func<TSource, bool>> predicate
)

Contains

Non supportato

 
Function Contains(Of TSource) ( _
source As IQueryable(Of TSource), _
item As TSource _
) As Boolean
 
bool Contains<TSource>(
this IQueryable<TSource> source,
TSource item
)

Contains

Non supportato

 
Function Contains(Of TSource) ( _
source As IQueryable(Of TSource), _
item As TSource, _
comparer As IEqualityComparer(Of TSource) _
) As Boolean
 
bool Contains<TSource>(
this IQueryable<TSource> source,
TSource item,
IEqualityComparer<TSource> comparer
)

Concat

Supportato, ma non è garantito che l'ordine venga mantenuto

 
Function Concat(Of TSource) ( _
source1 As IQueryable(Of TSource), _
source2 As IEnumerable(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Concat<TSource>(
this IQueryable<TSource> source1,
IEnumerable<TSource> source2
)

DefaultIfEmpty

Non supportato

 
Function DefaultIfEmpty(Of TSource) ( _
source As IQueryable(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> DefaultIfEmpty<TSource>(
this IQueryable<TSource> source
)

DefaultIfEmpty

Non supportato

 
Function DefaultIfEmpty(Of TSource) ( _
source As IQueryable(Of TSource), _
defaultValue As TSource _
) As IQueryable(Of TSource)
 
IQueryable<TSource> DefaultIfEmpty<TSource>(
this IQueryable<TSource> source,
TSource defaultValue
)

Distinct

Supportato

 
Function Distinct(Of TSource) ( _
source As IQueryable(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Distinct<TSource>(
this IQueryable<TSource> source
)

Distinct

Non supportato

 
Function Distinct(Of TSource) ( _
source As IQueryable(Of TSource), _
comparer As IEqualityComparer(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Distinct<TSource>(
this IQueryable<TSource> source,
IEqualityComparer<TSource> comparer
)

Except

Supportato

 
Function Except(Of TSource) ( _
source1 As IQueryable(Of TSource), _
source2 As IEnumerable(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Except<TSource>(
this IQueryable<TSource> source1,
IEnumerable<TSource> source2
)

Except

Non supportato

 
Function Except(Of TSource) ( _
source1 As IQueryable(Of TSource), _
source2 As IEnumerable(Of TSource), _
comparer As IEqualityComparer(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Except<TSource>(
this IQueryable<TSource> source1,
IEnumerable<TSource> source2,
IEqualityComparer<TSource> comparer
)

Intersect

Supportato

 
Function Intersect(Of TSource) ( _
source1 As IQueryable(Of TSource), _
source2 As IEnumerable(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Intersect<TSource>(
this IQueryable<TSource> source1,
IEnumerable<TSource> source2
)

Intersect

Non supportato

 
Function Intersect(Of TSource) ( _
source1 As IQueryable(Of TSource), _
source2 As IEnumerable(Of TSource), _
comparer As IEqualityComparer(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Intersect<TSource>(
this IQueryable<TSource> source1,
IEnumerable<TSource> source2,
IEqualityComparer<TSource> comparer
)

Union

Supportato

 
Function Union(Of TSource) ( _
source1 As IQueryable(Of TSource), _
source2 As IEnumerable(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Union<TSource>(
this IQueryable<TSource> source1,
IEnumerable<TSource> source2
)

Union

Non supportato

 
Function Union(Of TSource) ( _
source1 As IQueryable(Of TSource), _
source2 As IEnumerable(Of TSource), _
comparer As IEqualityComparer(Of TSource) _
) As IQueryable(Of TSource)
 
IQueryable<TSource> Union<TSource>(
this IQueryable<TSource> source1,
IEnumerable<TSource> source2,
IEqualityComparer<TSource> comparer
)

Vedere anche

Concetti

Metodi supportati e non supportati (LINQ to Entities)

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