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Queryable.ExceptBy Method

Definition

Overloads

ExceptBy<TSource,TKey>(IQueryable<TSource>, IEnumerable<TKey>, Expression<Func<TSource,TKey>>, IEqualityComparer<TKey>)

Produces the set difference of two sequences according to a specified key selector function.

ExceptBy<TSource,TKey>(IQueryable<TSource>, IEnumerable<TKey>, Expression<Func<TSource,TKey>>)

Produces the set difference of two sequences according to a specified key selector function.

ExceptBy<TSource,TKey>(IQueryable<TSource>, IEnumerable<TKey>, Expression<Func<TSource,TKey>>, IEqualityComparer<TKey>)

Source:
Queryable.cs
Source:
Queryable.cs
Source:
Queryable.cs

Produces the set difference of two sequences according to a specified key selector function.

public:
generic <typename TSource, typename TKey>
[System::Runtime::CompilerServices::Extension]
 static System::Linq::IQueryable<TSource> ^ ExceptBy(System::Linq::IQueryable<TSource> ^ source1, System::Collections::Generic::IEnumerable<TKey> ^ source2, System::Linq::Expressions::Expression<Func<TSource, TKey> ^> ^ keySelector, System::Collections::Generic::IEqualityComparer<TKey> ^ comparer);
public static System.Linq.IQueryable<TSource> ExceptBy<TSource,TKey> (this System.Linq.IQueryable<TSource> source1, System.Collections.Generic.IEnumerable<TKey> source2, System.Linq.Expressions.Expression<Func<TSource,TKey>> keySelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer);
static member ExceptBy : System.Linq.IQueryable<'Source> * seq<'Key> * System.Linq.Expressions.Expression<Func<'Source, 'Key>> * System.Collections.Generic.IEqualityComparer<'Key> -> System.Linq.IQueryable<'Source>
<Extension()>
Public Function ExceptBy(Of TSource, TKey) (source1 As IQueryable(Of TSource), source2 As IEnumerable(Of TKey), keySelector As Expression(Of Func(Of TSource, TKey)), comparer As IEqualityComparer(Of TKey)) As IQueryable(Of TSource)

Type Parameters

TSource

The type of the elements of the input sequence.

TKey

The type of key to identify elements by.

Parameters

source1
IQueryable<TSource>

An IQueryable<T> whose keys that are not also in source2 will be returned.

source2
IEnumerable<TKey>

An IEnumerable<T> whose keys that also occur in the first sequence will cause those elements to be removed from the returned sequence.

keySelector
Expression<Func<TSource,TKey>>

A function to extract the key for each element.

comparer
IEqualityComparer<TKey>

An IEqualityComparer<T> to compare keys.

Returns

IQueryable<TSource>

A IQueryable<T> that contains the set difference of the elements of two sequences.

Applies to

ExceptBy<TSource,TKey>(IQueryable<TSource>, IEnumerable<TKey>, Expression<Func<TSource,TKey>>)

Source:
Queryable.cs
Source:
Queryable.cs
Source:
Queryable.cs

Produces the set difference of two sequences according to a specified key selector function.

public:
generic <typename TSource, typename TKey>
[System::Runtime::CompilerServices::Extension]
 static System::Linq::IQueryable<TSource> ^ ExceptBy(System::Linq::IQueryable<TSource> ^ source1, System::Collections::Generic::IEnumerable<TKey> ^ source2, System::Linq::Expressions::Expression<Func<TSource, TKey> ^> ^ keySelector);
public static System.Linq.IQueryable<TSource> ExceptBy<TSource,TKey> (this System.Linq.IQueryable<TSource> source1, System.Collections.Generic.IEnumerable<TKey> source2, System.Linq.Expressions.Expression<Func<TSource,TKey>> keySelector);
static member ExceptBy : System.Linq.IQueryable<'Source> * seq<'Key> * System.Linq.Expressions.Expression<Func<'Source, 'Key>> -> System.Linq.IQueryable<'Source>
<Extension()>
Public Function ExceptBy(Of TSource, TKey) (source1 As IQueryable(Of TSource), source2 As IEnumerable(Of TKey), keySelector As Expression(Of Func(Of TSource, TKey))) As IQueryable(Of TSource)

Type Parameters

TSource

The type of the elements of the input sequence.

TKey

The type of key to identify elements by.

Parameters

source1
IQueryable<TSource>

An IQueryable<T> whose keys that are not also in source2 will be returned.

source2
IEnumerable<TKey>

An IEnumerable<T> whose keys that also occur in the first sequence will cause those elements to be removed from the returned sequence.

keySelector
Expression<Func<TSource,TKey>>

A function to extract the key for each element.

Returns

IQueryable<TSource>

A IQueryable<T> that contains the set difference of the elements of two sequences.

Applies to