. NET Framework-arrays (array) & ArrayList & List

Array Features:

Specified length at initialization

Same element type

Continuous data storage, High efficiency

System.Collections.ArrayList:

No length required for initialization, length expands and shrinks dynamically with stored data

The element type can be different, its internal use object[] to achieve data storage, so the data read and write will be frequency-sensitive boxing, unpacking and thus affect efficiency

Inherit interface: IList, ICollection, IEnumerable, icloneable, data increase, delete, change to check is very convenient

System.collections.generic.list<t>:

Model class (c#2.0 New features)

Resolves a type-safety issue with arraylist, does not boxing a value type, does a unboxing operation, and enforces type conversions down the reference type

Defines the type of the element when the type T in List<t> is the object, which is the same as ArrayList

Inheritance interfaces: IList, ICollection, IEnumerable, icloneable and their corresponding generic interfaces:ilist<t>, icollection<t>, ienumerable<t > (no icloneable<t> interface)

Reference: http://www.cnblogs.com/a164266729/p/4561651.html

. NET Framework-arrays (array) & ArrayList & List