System.Collections Namespace
.NET Framework 4.5
The System.Collections namespace contains interfaces and classes that define various collections of objects, such as lists, queues, bit arrays, hash tables and dictionaries.
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ArrayList | Implements the IList interface using an array whose size is dynamically increased as required. |
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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). |
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CaseInsensitiveComparer | Compares two objects for equivalence, ignoring the case of strings. |
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CaseInsensitiveHashCodeProvider | Obsolete. Supplies a hash code for an object, using a hashing algorithm that ignores the case of strings. |
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CollectionBase | Provides the abstract base class for a strongly typed collection. |
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Comparer | Compares two objects for equivalence, where string comparisons are case-sensitive. |
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DictionaryBase | Provides the abstract base class for a strongly typed collection of key/value pairs. |
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Hashtable | Represents a collection of key/value pairs that are organized based on the hash code of the key. |
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Queue | Represents a first-in, first-out collection of objects. |
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ReadOnlyCollectionBase | Provides the abstract base class for a strongly typed non-generic read-only collection. |
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SortedList | Represents a collection of key/value pairs that are sorted by the keys and are accessible by key and by index. |
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Stack | Represents a simple last-in-first-out (LIFO) non-generic collection of objects. |
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StructuralComparisons | Provides objects for performing a structural comparison of two collection objects. |
| Structure | Description | |
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DictionaryEntry | Defines a dictionary key/value pair that can be set or retrieved. |
| Interface | Description | |
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ICollection | Defines size, enumerators, and synchronization methods for all nongeneric collections. |
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IComparer | Exposes a method that compares two objects. |
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IDictionary | Represents a nongeneric collection of key/value pairs. |
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IDictionaryEnumerator | Enumerates the elements of a nongeneric dictionary. |
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IEnumerable | Exposes an enumerator, which supports a simple iteration over a non-generic collection. |
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IEnumerator | Supports a simple iteration over a non-generic collection. |
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IEqualityComparer | Defines methods to support the comparison of objects for equality. |
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IHashCodeProvider | Obsolete. Supplies a hash code for an object, using a custom hash function. |
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IList | Represents a non-generic collection of objects that can be individually accessed by index. |
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IStructuralComparable | Supports the structural comparison of collection objects. |
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IStructuralEquatable | Defines methods to support the comparison of objects for structural equality. |
