c#中list使用示例

    protected void Page_Load(object sender, EventArgs e)
    {
        List<string> studentNames = new List<string>();
        studentNames.Add("John");
        studentNames.Add("Mary");
        studentNames.Add("Rose");
 
        //显示各元素
        foreach (string item in studentNames)
        {
            Response.Write(item);
            Response.Write("<br/>");
        }
        Response.Write("<br/><br/>");
 
        //List转换成符号分隔字符串
        string studentAllName = string.Join(",", studentNames.ToArray());
        Response.Write(studentAllName);
        Response.Write("<br/><br/>");
 
        List<decimal> studentScore = new List<decimal>();
        studentScore.Add(100);
        studentScore.Add(98);
        studentScore.Add(59);
        //排序
        studentScore.Sort();
        //反转排序
        studentScore.Reverse();
        //显示各元素
        foreach (decimal score in studentScore)
        {
            Response.Write(score);
            Response.Write("<br/>");
        }
        //总计SUM
        Response.Write("总分" + studentScore.Sum());
        Response.Write("<br/>");
        //List中是否存在
        Response.Write(studentScore.Exists(MatchPRE));
        Response.Write("<br/><br/>");
 
        //List转换成JSon
        List<Student> list = new List<Student>();
        for (int i = 0; i < 5; i++)
        {
            Student a = new Student();
            a.Name = "张三" + i;
            a.Age = i;
            a.Sex = "男";
            list.Add(a);
        }
       string  json = new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(list);
       Response.Write(json);
       Response.Write("<br/><br/>");
 
    }
 
    private static bool MatchPRE(decimal p)//条件匹配函数，list1中每个元素都会传入P中                                                                           //匹配后函数返回
    {
        if (p == 100)//此句为匹配条件，如果匹配，返回，你可以随意更改成你想要的值
            return true;
        else
        {
            return false;
        }
    }
 
    public struct Student
    {
        public string Name;
        public int Age;
        public string Sex;
    }