Queryable.DistinctBy Metode
Definisi
Penting
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Overload
| Nama | Deskripsi |
|---|---|
| DistinctBy<TSource,TKey>(IQueryable<TSource>, Expression<Func<TSource,TKey>>, IEqualityComparer<TKey>) |
Mengembalikan elemen yang berbeda dari urutan sesuai dengan fungsi pemilih kunci tertentu. |
| DistinctBy<TSource,TKey>(IQueryable<TSource>, Expression<Func<TSource,TKey>>) |
Mengembalikan elemen yang berbeda dari urutan sesuai dengan fungsi pemilih kunci tertentu. |
DistinctBy<TSource,TKey>(IQueryable<TSource>, Expression<Func<TSource,TKey>>, IEqualityComparer<TKey>)
- Sumber:
- Queryable.cs
- Sumber:
- Queryable.cs
- Sumber:
- Queryable.cs
- Sumber:
- Queryable.cs
- Sumber:
- Queryable.cs
Mengembalikan elemen yang berbeda dari urutan sesuai dengan fungsi pemilih kunci tertentu.
public:
generic <typename TSource, typename TKey>
[System::Runtime::CompilerServices::Extension]
static System::Linq::IQueryable<TSource> ^ DistinctBy(System::Linq::IQueryable<TSource> ^ source, System::Linq::Expressions::Expression<Func<TSource, TKey> ^> ^ keySelector, System::Collections::Generic::IEqualityComparer<TKey> ^ comparer);public static System.Linq.IQueryable<TSource> DistinctBy<TSource,TKey>(this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,TKey>> keySelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer);[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]
public static System.Linq.IQueryable<TSource> DistinctBy<TSource,TKey>(this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,TKey>> keySelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer);static member DistinctBy : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, 'Key>> * System.Collections.Generic.IEqualityComparer<'Key> -> System.Linq.IQueryable<'Source>[<System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")>]
static member DistinctBy : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, 'Key>> * System.Collections.Generic.IEqualityComparer<'Key> -> System.Linq.IQueryable<'Source><Extension()>
Public Function DistinctBy(Of TSource, TKey) (source As IQueryable(Of TSource), keySelector As Expression(Of Func(Of TSource, TKey)), comparer As IEqualityComparer(Of TKey)) As IQueryable(Of TSource)Jenis parameter
- TSource
Jenis elemen source.
- TKey
Jenis kunci untuk membedakan elemen dengan.
Parameter
- source
- IQueryable<TSource>
Urutan untuk menghapus elemen duplikat.
- keySelector
- Expression<Func<TSource,TKey>>
Fungsi untuk mengekstrak kunci untuk setiap elemen.
- comparer
- IEqualityComparer<TKey>
Untuk IEqualityComparer<T> membandingkan kunci.
Mengembalikan
Yang IQueryable<T> berisi elemen yang berbeda dari urutan sumber.
- Atribut
Pengecualian
source adalah null.
Berlaku untuk
DistinctBy<TSource,TKey>(IQueryable<TSource>, Expression<Func<TSource,TKey>>)
- Sumber:
- Queryable.cs
- Sumber:
- Queryable.cs
- Sumber:
- Queryable.cs
- Sumber:
- Queryable.cs
- Sumber:
- Queryable.cs
Mengembalikan elemen yang berbeda dari urutan sesuai dengan fungsi pemilih kunci tertentu.
public:
generic <typename TSource, typename TKey>
[System::Runtime::CompilerServices::Extension]
static System::Linq::IQueryable<TSource> ^ DistinctBy(System::Linq::IQueryable<TSource> ^ source, System::Linq::Expressions::Expression<Func<TSource, TKey> ^> ^ keySelector);public static System.Linq.IQueryable<TSource> DistinctBy<TSource,TKey>(this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,TKey>> keySelector);[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")]
public static System.Linq.IQueryable<TSource> DistinctBy<TSource,TKey>(this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,TKey>> keySelector);static member DistinctBy : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, 'Key>> -> System.Linq.IQueryable<'Source>[<System.Diagnostics.CodeAnalysis.RequiresDynamicCode("Enumerating collections as IQueryable can require creating new generic types or methods, which requires creating code at runtime. This may not work when AOT compiling.")>]
static member DistinctBy : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, 'Key>> -> System.Linq.IQueryable<'Source><Extension()>
Public Function DistinctBy(Of TSource, TKey) (source As IQueryable(Of TSource), keySelector As Expression(Of Func(Of TSource, TKey))) As IQueryable(Of TSource)Jenis parameter
- TSource
Jenis elemen source.
- TKey
Jenis kunci untuk membedakan elemen dengan.
Parameter
- source
- IQueryable<TSource>
Urutan untuk menghapus elemen duplikat.
- keySelector
- Expression<Func<TSource,TKey>>
Fungsi untuk mengekstrak kunci untuk setiap elemen.
Mengembalikan
Yang IQueryable<T> berisi elemen yang berbeda dari urutan sumber.
- Atribut
Pengecualian
source adalah null.
