Join(TOuter, TInner, TKey, TResult) Method (ParallelQuery(TOuter), IEnumerable(TInner), Func(TOuter, TKey), Func(TInner, TKey), Func(TOuter, TInner, TResult))

Task Parallel System.Threading

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This Join overload should never be called. This method is marked as obsolete and always throws NotSupportedException when invoked.

Namespace: System.Linq
Assembly: System.Threading (in System.Threading.dll)

Syntax

Visual Basic (Declaration)
<ObsoleteAttribute("The second data source of a binary operator must be of type System.Linq.ParallelQuery<T> rather than System.Collections.Generic.IEnumerable<T>. To fix this problem, use the AsParallel() extension method to convert the right data source to System.Linq.ParallelQuery<T>.")> _ Public Shared Function Join(Of TOuter, TInner, TKey, TResult) ( _ outer As ParallelQuery(Of TOuter), _ inner As IEnumerable(Of TInner), _ outerKeySelector As Func(Of TOuter, TKey), _ innerKeySelector As Func(Of TInner, TKey), _ resultSelector As Func(Of TOuter, TInner, TResult) _ ) As ParallelQuery(Of TResult)

Visual Basic (Declaration)

<ObsoleteAttribute("The second data source of a binary operator must be of type System.Linq.ParallelQuery<T> rather than System.Collections.Generic.IEnumerable<T>. To fix this problem, use the AsParallel() extension method to convert the right data source to System.Linq.ParallelQuery<T>.")> _
Public Shared Function Join(Of TOuter, TInner, TKey, TResult) ( _
	outer As ParallelQuery(Of TOuter), _
	inner As IEnumerable(Of TInner), _
	outerKeySelector As Func(Of TOuter, TKey), _
	innerKeySelector As Func(Of TInner, TKey), _
	resultSelector As Func(Of TOuter, TInner, TResult) _
) As ParallelQuery(Of TResult)

C#
[ObsoleteAttribute("The second data source of a binary operator must be of type System.Linq.ParallelQuery<T> rather than System.Collections.Generic.IEnumerable<T>. To fix this problem, use the AsParallel() extension method to convert the right data source to System.Linq.ParallelQuery<T>.")] public static ParallelQuery<TResult> Join<TOuter, TInner, TKey, TResult>( ParallelQuery<TOuter> outer, IEnumerable<TInner> inner, Func<TOuter, TKey> outerKeySelector, Func<TInner, TKey> innerKeySelector, Func<TOuter, TInner, TResult> resultSelector )

[ObsoleteAttribute("The second data source of a binary operator must be of type System.Linq.ParallelQuery<T> rather than System.Collections.Generic.IEnumerable<T>. To fix this problem, use the AsParallel() extension method to convert the right data source to System.Linq.ParallelQuery<T>.")]
public static ParallelQuery<TResult> Join<TOuter, TInner, TKey, TResult>(
	ParallelQuery<TOuter> outer,
	IEnumerable<TInner> inner,
	Func<TOuter, TKey> outerKeySelector,
	Func<TInner, TKey> innerKeySelector,
	Func<TOuter, TInner, TResult> resultSelector
)

Parameters

outer: Type: System.Linq..::.ParallelQuery<(Of <(TOuter>)>)
This parameter is not used.

inner: Type: System.Collections.Generic..::.IEnumerable<(Of <(TInner>)>)
This parameter is not used.

outerKeySelector: Type: System..::.Func<(Of <(TOuter, TKey>)>)
This parameter is not used.

innerKeySelector: Type: System..::.Func<(Of <(TInner, TKey>)>)
This parameter is not used.

resultSelector: Type: System..::.Func<(Of <(TOuter, TInner, TResult>)>)
This parameter is not used.

Type Parameters

TOuter: This type parameter is not used.
TInner: This type parameter is not used.
TKey: This type parameter is not used.
TResult: This type parameter is not used.

Return Value

This overload always throws a NotSupportedException.

Remarks

This overload exists to disallow usage Join with a left data source of type ParallelQuery<(Of <(TSource>)>) and a right data source of type IEnumerable<(Of <(T>)>). Otherwise, the Join operator would appear to be binding to the parallel implementation, but would in reality bind to the sequential implementation.

Exceptions

Exception	Condition
System..::.NotSupportedException	The exception that occurs when this method is called.