IList Interface

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Represents a non-generic collection of objects that can be individually accessed by index.

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

Syntax

'Declaration
Public Interface IList _
    Inherits ICollection, IEnumerable

public interface IList : ICollection, IEnumerable

public interface class IList : ICollection, 
    IEnumerable

type IList =  
    interface
        interface ICollection
        interface IEnumerable
    end

public interface IList extends ICollection, IEnumerable

The IList type exposes the following members.

Properties

	Name	Description
	Count	Gets the number of elements contained in the ICollection. (Inherited from ICollection.)
	IsFixedSize	Gets a value indicating whether the IList has a fixed size.
	IsReadOnly	Gets a value indicating whether the IList is read-only.
	IsSynchronized	Gets a value indicating whether access to the ICollection is synchronized (thread safe). (Inherited from ICollection.)
	Item	Gets or sets the element at the specified index.
	SyncRoot	Gets an object that can be used to synchronize access to the ICollection. (Inherited from ICollection.)

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Methods

	Name	Description
	Add	Adds an item to the IList.
	Clear	Removes all items from the IList.
	Contains	Determines whether the IList contains a specific value.
	CopyTo	Copies the elements of the ICollection to an Array, starting at a particular Array index. (Inherited from ICollection.)
	GetEnumerator	Returns an enumerator that iterates through a collection. (Inherited from IEnumerable.)
	IndexOf	Determines the index of a specific item in the IList.
	Insert	Inserts an item to the IList at the specified index.
	Remove	Removes the first occurrence of a specific object from the IList.
	RemoveAt	Removes the IList item at the specified index.

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Remarks

IList is a descendant of the ICollection interface and is the base interface of all non-generic lists. IList implementations fall into three categories: read-only, fixed-size, and variable-size. A read-only IList cannot be modified. A fixed-size IList does not allow the addition or removal of elements, but it allows the modification of existing elements. A variable-size IList allows the addition, removal, and modification of elements.

See Also

Reference

System.Collections Namespace