GroupJoin<TInner,TKey,TResult>(ObservableCollection<TInner>,Expression<Func<T,TKey>>,Expression<Func<TInner,TKey>>,Expression<Func<T,GroupView<TKey,TInner>,TResult>>) Method

Correlates the elements of this view and a collection based on equality of keys and groups the results.

Syntax

Visual Basic
C#

'Declaration
 
Public Overloads Function GroupJoin
    (Of TInner,TKey,TResult)( _
   ByVal inner As System.Collections.ObjectModel.ObservableCollection(Of TInner), _
   ByVal outerKeySelector As System.Linq.Expressions.Expression(Of Func(Of T,TKey)), _
   ByVal innerKeySelector As System.Linq.Expressions.Expression(Of Func(Of TInner,TKey)), _
   ByVal resultSelector As System.Linq.Expressions.Expression(Of Func(Of T,GroupView(Of TKey,TInner),TResult)) _
) As View(Of TResult)

public View<TResult> GroupJoin<TInner,TKey,TResult>( 
   System.Collections.ObjectModel.ObservableCollection<TInner> inner,
   System.Linq.Expressions.Expression<Func<T,TKey>> outerKeySelector,
   System.Linq.Expressions.Expression<Func<TInner,TKey>> innerKeySelector,
   System.Linq.Expressions.Expression<Func<T,GroupView<TKey,TInner>,TResult>> resultSelector
)

Parameters

inner: The collection to join to this view.
outerKeySelector: A function to extract the join key from each element of this view.
innerKeySelector: A function to extract the join key from each element of the collection.
resultSelector: A function to create a result view from an element from this view and a collection of matching elements from the second view.

Type Parameters

TInner: The type of the elements of the collection to join with this view.
TKey: The type of the keys returned by the key selector functions.
TResult: The type of the result elements.

Return Value

A view containing elements of type TResult that are obtained by performing a grouped join on this view and the collection.

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

View<T> Class
View<T> Members
Overload List