Join Method

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

Correlates the elements of two collections based on matching keys.

Declaration

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

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

Parameters

Type	Name	Description
IIndexedSource<TOuter>	outer	The first collection to join.
IEnumerable<TInner>	inner	The second collection to join.
Expression<Func<TOuter, TKey>>	outerKeySelector	A function to extract the join key from each element of the first collection.
Expression<Func<TInner, TKey>>	innerKeySelector	A function to extract the join key from each element of the second collection.
Expression<Func<TOuter, TInner, TResult>>	resultSelector	A function to create a result element from two matching elements.

Returns

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

Type Parameters

Name	Description
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.

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

Correlates the elements of two collections based on matching keys.

Declaration

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

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

Parameters

Type	Name	Description
IEnumerable<TOuter>	outer	The first collection to join.
IIndexedSource<TInner>	inner	The second collection to join.
Expression<Func<TOuter, TKey>>	outerKeySelector	A function to extract the join key from each element of the first collection.
Expression<Func<TInner, TKey>>	innerKeySelector	A function to extract the join key from each element of the second collection.
Expression<Func<TOuter, TInner, TResult>>	resultSelector	A function to create a result element from two matching elements.

Returns

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

Type Parameters

Name	Description
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.

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

Correlates the elements of two collections based on matching keys.

Declaration

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

Public Shared Function Join(Of TOuter, TInner, TKey, TResult)(outer As IIndexedSource(Of TOuter), inner As IIndexedSource(Of TInner), outerKeySelector As Expression(Of Func(Of TOuter, TKey)), innerKeySelector As Expression(Of Func(Of TInner, TKey)), resultSelector As Expression(Of Func(Of TOuter, TInner, TResult))) As IIndexedSource(Of TResult)

Parameters

Type	Name	Description
IIndexedSource<TOuter>	outer	The first collection to join.
IIndexedSource<TInner>	inner	The second collection to join.
Expression<Func<TOuter, TKey>>	outerKeySelector	A function to extract the join key from each element of the first collection.
Expression<Func<TInner, TKey>>	innerKeySelector	A function to extract the join key from each element of the second collection.
Expression<Func<TOuter, TInner, TResult>>	resultSelector	A function to create a result element from two matching elements.

Returns

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

Type Parameters

Name	Description
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.