. The collection in net

Collection namespaces:

Using. System.Collections; (non-generic collection)

Using. System.Collections.Genneric (Generic collection)

Common collections

1. "Array-like" collection:ArrayList, list<t>

2. "Key-value pairs" collection ("Hash Table" collection):hashitable, dictionry<k,v>

3. "Stack" collection: Stack, stack<t> (LIFO) last Infirst out

4. Queue collection: Queue, queue<t> (FIFO) first in first out

A collection of blue collections that are used primarily.

ArrayList Count and Capcity one is the number of elements, a number of capacity, when stored in an element count=1 capacity of 4, save the second time count=2 capacity=4

When deposited in the 5th, Count=5 Capacity=8, because the capacity initial capacity of 4, when the capacity reached 4 times doubled.

Array loop traversal with length and count plus indexer when set

Inserts an element into the specified position

　　　　adding elements

Arrlist. Insert (0, "the Emperor");

　　　　add Element-

Arrlist.addrange (); The method parameter is the ICollection interface. In other words, this parameter can pass the subclass of the integrated ICollection interface, which has many subclasses, which are basically collections and arrays

Arrlist.addrange (new int []{1,2,4,5,87,93,5});

　　　　Delete Element

Arrlist. Removeat (0);

Arrlist. Removeatrange ();

　　　　

　　

　　　　

. The collection in net