ASP.NET匿名オブジェクトとコレクションの使用

 、         
1、    
  ：    
var vobj = new { id = "  ", title = "  ", content = "  " };
  ：
var id = vobj.id;
  ：  

2、        
  ：      
var article = new[]
{
    new { id = "   ", title = "   ", content = "   " }
	new { id = "   ", title = "   ", content = "   " }
};
  ：
var title = article[1].title;
  ：   

3、      List  
  ：
var list = article.ToList();	//Array  List
list.Add(new { id = "   ", title = "   ", content = "   " });
article = list.ToArray();		//List  Array
  ：
var content = article[2].content;
  ：   

4、  JavaScriptSerializer   
var str = new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(list);
  ：JSON   

5、      
DropDownList ddl = new DropDownList();
ddl.DataSource = list;
ddl.DataTextField = "title";
ddl.DataValueField = "id";
ddl.DataBind();

 ：var    C# 3.0       ，          （      ）

6、Dictionary  
Dictionary<string, string> dic = new Dictionary<string, string>();
dic.Add("key", "value");
 ：      

7、NameValueCollection  
NameValueCollection col = new NameValueCollection(); 
col.Add("key", "value");
 ：         

8、Hashtable  
Hashtable ht = new Hashtable();  
ht.Add("key","value");
 ：      

9、List  
List<string> list = new List<string>();
list.Add("String");
 ：  ，   / 

10、   LINQ     
using System.Linq;
using System.Collections;
 
int[] items = new int[] { 1, 2, 3, 4, 5 };
IEnumerable<int> ints = from item in items
                        where item > 2.5
                        select item;
foreach (var p in ints)
{
    Console.WriteLine(p);
} 

  ：IEnumerable
    ：  Linq     ，   JSON         ；

11、     
public System.Collections.IEnumerator GetEnumerator()
{
    string[] days = { "Sun", "Mon", "Tue", "Wed", "Thr", "Fri", "Sat" };
    for (int i = 0; i < days.Length; i++)
    {
        yield return days[i];
    }
}