Join<TOuter,TInner,TKey,TResult>(IEnumerable<TOuter>,IIndexedSource<TInner>,Expression<Func<TOuter,TKey>>,Expression<Func<TInner,TKey>>,Expression<Func<TOuter,TInner,TResult>>) Method

In This Topic

Correlates the elements of two collections based on matching keys.

Syntax

Visual Basic
C#

'Declaration
 
Public Overloads Shared Function Join
    (Of TOuter,TInner,TKey,TResult)( _
   ByVal outer As IEnumerable(Of TOuter), _
   ByVal inner As IIndexedSource(Of TInner), _
   ByVal outerKeySelector As Expression(Of Func(Of TOuter,TKey)), _
   ByVal innerKeySelector As Expression(Of Func(Of TInner,TKey)), _
   ByVal resultSelector As Expression(Of Func(Of TOuter,TInner,TResult)) _
) As IIndexedSource(Of TResult)

public static IIndexedSource<TResult> Join<TOuter,TInner,TKey,TResult>( 
   IEnumerable<TOuter> outer,
   IIndexedSource<TInner> inner,
   Expression<Func<TOuter,TKey>> outerKeySelector,
   Expression<Func<TInner,TKey>> innerKeySelector,
   Expression<Func<TOuter,TInner,TResult>> resultSelector
)

Parameters

outer: The first collection to join.
inner: The second collection to join.
outerKeySelector: A function to extract the join key from each element of the first collection.
innerKeySelector: A function to extract the join key from each element of the second collection.
resultSelector: A function to create a result element from two matching elements.

Type Parameters

TOuter: The type of the elements of the first collection.
TInner: The type of the elements of the second collection.
TKey: The type of the keys returned by the key selector functions.
TResult: The type of the result elements.

Return Value

An IIndexedSource<TResult> that has elements of type TResult that are obtained by performing an inner join on two collections.

Reference

IndexedQueryExtensions Class
IndexedQueryExtensions Members
Overload List