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

IndexDefinition<T> Class

Contains common part of the Index and Subindex classes.

IndexDefinition<T>

public abstract class IndexDefinition<T>

Public MustInherit Class IndexDefinition(Of T)

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

This class serves as the base class of two classes: Index and Subindex. It contains properties common to these two classes.

Name	Description
Algorithm	Gets the indexing algorithm used by the index.
KeyIsUnique	Gets a value that indicates whether the key used in this index is a unique key for the collection.
KeySelector	Gets the expression used to obtain key value from an element of the indexed collection.
KeyType	Gets the type of the index key.
Locale	Gets the locale information used to compare strings in the index.
Root	Gets the root index in an index/subindex hierarchy.
Subindexes	Gets the collection of subindexes added to this index.