# C1.LiveLinq.Indexing.IIndexedSource-1 ## Content

IIndexedSource<T> Interface

Represents an indexed collection.

Namespace: C1.LiveLinq.Indexing

Assembly: C1.LiveLinq.4.8.dll

Syntax

public interface IIndexedSource<T> : IEnumerable<T>, IEnumerable

Public Interface IIndexedSource(Of T)
    Inherits IEnumerable(Of T), IEnumerable

Type Parameters

Name	Description
T	The type of the elements of the collection.

Remarks

An indexed collection has a collection of indexes, ScannerCollection<T> that are maintained up-to-date on every change made to the collection.

This interface is implemented by all main LiveLinq collection classes: IndexedCollection<T>, IndexedDataTable<TRow>, View<T>.

You need to implement this interface only if you want to define your own indexable collection classes and then only if they don't inherit from IndexedCollection<T>, see LiveLinq to Objects: IndexedCollection(T) and other collection classes.

Properties

Name	Description
Indexes	Gets the collection of indexes attached to this collection.

Extension Methods

Hints.Indexed<T>(T)

Hints.Indexed<T>(T, IndexingHintAction)

IndexedQueryExtensions.AsIndexed<T>(IIndexedSource<T>)

IndexedQueryExtensions.GroupBy<TSource, TKey>(IIndexedSource<TSource>, Expression<Func<TSource, TKey>>)

IndexedQueryExtensions.GroupBy<TSource, TKey, TResult>(IIndexedSource<TSource>, Expression<Func<TSource, TKey>>, Expression<Func<TKey, IEnumerable<TSource>, TResult>>)

IndexedQueryExtensions.GroupBy<TSource, TKey, TElement>(IIndexedSource<TSource>, Expression<Func<TSource, TKey>>, Expression<Func<TSource, TElement>>)

IndexedQueryExtensions.GroupBy<TSource, TKey, TElement, TResult>(IIndexedSource<TSource>, Expression<Func<TSource, TKey>>, Expression<Func<TSource, TElement>>, Expression<Func<TKey, IEnumerable<TElement>, TResult>>)

IndexedQueryExtensions.GroupJoin<TOuter, TInner, TKey, TResult>(IIndexedSource<TOuter>, IEnumerable<TInner>, Expression<Func<TOuter, TKey>>, Expression<Func<TInner, TKey>>, Expression<Func<TOuter, IEnumerable<TInner>, TResult>>)

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

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

IndexedQueryExtensions.OrderByDescending<T, TKey>(IIndexedSource<T>, Expression<Func<T, TKey>>)

IndexedQueryExtensions.OrderBy<T, TKey>(IIndexedSource<T>, Expression<Func<T, TKey>>)

IndexedQueryExtensions.SelectMany<TSource, TResult>(IIndexedSource<TSource>, Expression<Func<TSource, IEnumerable<TResult>>>)

IndexedQueryExtensions.SelectMany<TSource, TCollection, TResult>(IIndexedSource<TSource>, Expression<Func<TSource, IEnumerable<TCollection>>>, Expression<Func<TSource, TCollection, TResult>>)

IndexedQueryExtensions.Select<TSource, TResult>(IIndexedSource<TSource>, Expression<Func<TSource, TResult>>)

IndexedQueryExtensions.Where<T>(IIndexedSource<T>, Expression<Func<T, bool>>)

IndexedQueryExtensions.Where<T>(IIndexedSource<T>, Expression<Func<T, bool>>, bool)

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