json反序列化成实体存入数据库

string json="[{"ID":"1","Name":"哈哈1号"，"Age":"1"},{"ID":"2","Name":"哈哈2号"，"Age":"2"},{"ID":"3","Name":"哈哈3号"，"Age":"3"}]"

DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(List<Model.hello>));//这里需引用using System.Runtime.Serialization.Json; 如果点不出json先添加引用 System.Runtime.Serialization
MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(json);
List<Model.hello> list = (List<Model.hello>)ser.ReadObject(ms);
for (int i = 0; i < list.Count; i++)
{
hellobll.Add(list[i]);//添加到数据库的方法  
}

实体类

public class hello

{

　　public int ID{get;set;}

　　public string Name{get;set;}

　　public string Age{get;set;}

}