Home Library Learn Downloads Support Community
Sign in | United States - English | |
28 out of 37 rated this helpful - Rate this topic

System.Collections Namespace

.NET Framework 2.0
The System.Collections namespace contains interfaces and classes that define various collections of objects, such as lists, queues, bit arrays, hash tables and dictionaries.
  Class Description
Public class ArrayList Implements the IList interface using an array whose size is dynamically increased as required.
Public class BitArray Manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on (1) and false indicates the bit is off (0).
Public class CaseInsensitiveComparer Compares two objects for equivalence, ignoring the case of strings.
Public class CaseInsensitiveHashCodeProvider Supplies a hash code for an object, using a hashing algorithm that ignores the case of strings.
Public class CollectionBase Provides the abstract base class for a strongly typed collection.
Public class Comparer Compares two objects for equivalence, where string comparisons are case-sensitive.
Public class DictionaryBase Provides the abstract base class for a strongly typed collection of key/value pairs.
Public class Hashtable Represents a collection of key/value pairs that are organized based on the hash code of the key.
Public class Queue Represents a first-in, first-out collection of objects.
Public class ReadOnlyCollectionBase Provides the abstract base class for a strongly typed non-generic read-only collection.
Public class SortedList Represents a collection of key/value pairs that are sorted by the keys and are accessible by key and by index.
Public class Stack Represents a simple last-in-first-out (LIFO) non-generic collection of objects.
  Interface Description
Public interface ICollection Defines size, enumerators, and synchronization methods for all nongeneric collections.
Public interface IComparer Exposes a method that compares two objects.
Public interface IDictionary Represents a nongeneric collection of key/value pairs.
Public interface IDictionaryEnumerator Enumerates the elements of a nongeneric dictionary.
Public interface IEnumerable Exposes the enumerator, which supports a simple iteration over a non-generic collection.
Public interface IEnumerator Supports a simple iteration over a nongeneric collection.
Public interface IEqualityComparer Defines methods to support the comparison of objects for equality.
Public interface IHashCodeProvider Supplies a hash code for an object, using a custom hash function.
Public interface IList Represents a non-generic collection of objects that can be individually accessed by index.
  Structure Description
Public structure DictionaryEntry Defines a dictionary key/value pair that can be set or retrieved.
Did you find this helpful?
(1500 characters remaining)
Community Content Add
Annotations FAQ
PowerCollections

If you don't find the collection you are looking for here (or in System.Collections.Generic or System.Collections.Specialized), try looking at the PowerCollections effort on GotDotNet: http://www.gotdotnet.com/content/featuredsite/powercollections/default.aspx

Also, You should look at the C5 generic collections (http://www.itu.dk/research/c5/). The C5 collections include the following generic collections:

ArrayList<T>,
CircularQueue<T>,
GuardedCollection<T>,
GuardedDictionary<K,V>,
GuardedDirectedEnumerable<T>,
GuardedEnumerable<T>,
GuardedEnumerator<T>,
GuardedIndexedSorted<T>,
GuardedList<T>,
GuardedQueue<T>,
GuardedSequenced<T>,
GuardedSorted<T>,
GuardedSortedDictionary<K,V>,
HashBag<T>,
HashDictionary<K,V>,
HashedArrayList<T>,
HashedLinkedList<T>,
HashSet<T>,
IntervalHeap<T>,
LinkedList<T>,
SequencedBase<T>,
SortedArray<T>,
SortedDictionaryBase<K,V>,
TreeBag<T>,
TreeDictionary<K,V>,
TreeSet<T>,
UnsequencedCollectionEqualityComparer<T,W>,
WrappedArray<T>

History