Queryable.ExceptBy Method
Definition
Important
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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
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
A IQueryable<T> that contains the set difference of the elements of two sequences.
