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ICollection<T> Interface

Defines methods to manipulate generic collections.

Namespace:  System.Collections.Generic
Assembly:  mscorlib (in mscorlib.dll)

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

Type Parameters

T

The type of the elements in the collection.

The ICollection<T> interface is the base interface for classes in the System.Collections.Generic namespace.

The ICollection<T> interface extends IEnumerable<T>; IDictionary<TKey, TValue> and IList<T> are more specialized interfaces that extend ICollection<T>. A IDictionary<TKey, TValue> implementation is a collection of key/value pairs, like the Dictionary<TKey, TValue> class. A IList<T> implementation is a collection of values, and its members can be accessed by index, like the List<T> class.

If neither the IDictionary<TKey, TValue> interface nor the IList<T> interface meet the requirements of the required collection, derive the new collection class from the ICollection<T> interface instead for more flexibility.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0

.NET Compact Framework

Supported in: 3.5, 2.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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