Queryable.IntersectBy Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Overloads
| IntersectBy<TSource,TKey>(IQueryable<TSource>, IEnumerable<TKey>, Expression<Func<TSource,TKey>>) |
Produces the set intersection of two sequences according to a specified key selector function. |
| IntersectBy<TSource,TKey>(IQueryable<TSource>, IEnumerable<TKey>, Expression<Func<TSource,TKey>>, IEqualityComparer<TKey>) |
Produces the set intersection of two sequences according to a specified key selector function. |
IntersectBy<TSource,TKey>(IQueryable<TSource>, IEnumerable<TKey>, Expression<Func<TSource,TKey>>)
- Source:
- Queryable.cs
- Source:
- Queryable.cs
- Source:
- Queryable.cs
Produces the set intersection 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> ^ IntersectBy(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> IntersectBy<TSource,TKey> (this System.Linq.IQueryable<TSource> source1, System.Collections.Generic.IEnumerable<TKey> source2, System.Linq.Expressions.Expression<Func<TSource,TKey>> keySelector);static member IntersectBy : System.Linq.IQueryable<'Source> * seq<'Key> * System.Linq.Expressions.Expression<Func<'Source, 'Key>> -> System.Linq.IQueryable<'Source><Extension()>
Public Function IntersectBy(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 sequences.
- TKey
The type of key to identify elements by.
Parameters
- source1
- IQueryable<TSource>
An IQueryable<T> whose distinct elements that also appear in source2 will be returned.
- source2
- IEnumerable<TKey>
An IEnumerable<T> whose distinct elements that also appear in the first sequence will be returned.
- keySelector
- Expression<Func<TSource,TKey>>
A function to extract the key for each element.
Returns
A sequence that contains the elements that form the set intersection of two sequences.
Exceptions
source1 or source2 is null.
Applies to
IntersectBy<TSource,TKey>(IQueryable<TSource>, IEnumerable<TKey>, Expression<Func<TSource,TKey>>, IEqualityComparer<TKey>)
- Source:
- Queryable.cs
- Source:
- Queryable.cs
- Source:
- Queryable.cs
Produces the set intersection 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> ^ IntersectBy(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> IntersectBy<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 IntersectBy : 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 IntersectBy(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 sequences.
- TKey
The type of key to identify elements by.
Parameters
- source1
- IQueryable<TSource>
An IQueryable<T> whose distinct elements that also appear in source2 will be returned.
- source2
- IEnumerable<TKey>
An IEnumerable<T> whose distinct elements that also appear in the first sequence will be returned.
- keySelector
- Expression<Func<TSource,TKey>>
A function to extract the key for each element.
- comparer
- IEqualityComparer<TKey>
An IEqualityComparer<T> to compare keys.
Returns
A sequence that contains the elements that form the set intersection of two sequences.
Exceptions
source1 or source2 is null.
