【【【简单问题】】】

Question

读取一个txt文件文件格式如下刘德华|50|600
郭德纲|60|500
小沈阳|30|400
分别是姓名，年龄，成绩想判断最后成绩！把最大的成绩和姓名读取出来求解

Answer 1

读入至dataset，再判断，可能需要拆分

Answer 2

list, string[], linq，目前想到这么多。 

Answer 3

读入文本
int maxScore;
while(streamToPrint.ReadLine()!= null)
{
   读入每行split成 score
   判断maxScore < score
   则 maxscore = score
    同时记录 该行姓名
}

Answer 4

System.IO.StreamReader sr = new System.IO.StreamReader("c:/f.txt"); 
           //伪代码 get Connection 
           // DBTrans tran = Connection.BeginTran();
            try{
                while (!sr.EndOfStream) 
                { 
                    string strReadLine = sr.ReadLine(); 
                    string[] strArray = strReadLine.Split(' '); 
                    //这里判断你想要的字符串格式
                  }
            tran.Commit();
            }
            catch(Exception ex)
            {
                 tran.Rollback();  
            }
            finally
            { 
                 Connection.Close(); 
                 sr.Close();
            }

Answer 5

System.IO.StreamReader sr = new System.IO.StreamReader("c:/f.txt");  
  //伪代码 get Connection  
  // DBTrans tran = Connection.BeginTran();
  try{
  while (!sr.EndOfStream)  
  {  
  string strReadLine = sr.ReadLine();  
  string[] strArray = strReadLine.Split(' ');  
  //这里判断你想要的字符串格式
  }
  tran.Commit();
  }
  catch(Exception ex)
  {
  tran.Rollback();   
  }
  finally
  {  
  Connection.Close();  
  sr.Close();
  }

Answer 6

void Main()
{   
List<string>list =new List<string>{ "刘德华|50|600",
"郭德纲|60|500",
"小沈阳|30|400"};
var query=(from l in list
          let paramString=l.Split('|') 
  orderby int.Parse(paramString[2]) descending
  select new
{
  name=paramString[0] 
}).First();
    Console.WriteLine(query.name);
//刘德华}

Answer 7

//冒泡取第一条就可以！
 protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                IList<Info> ilist = new List<Info>();
                StringBuilder sb = new StringBuilder();
                string path = Server.MapPath("/Merchants/txt.txt");
                string[] str = File.ReadAllLines(path, Encoding.GetEncoding("gb2312"));
                foreach (string s in str)
                {
                    string[] result = s.Split('|');
                    Info info = new Info();
                    info.Username = result[0].ToString();
                    info.Age = Convert.ToInt32(result[1]);
                    info.Score = Convert.ToInt32(result[2]);
                    ilist.Add(info);
                }
                for (int i = 0; i < ilist.Count; i++)
                {
                    for (int j = i + 1; j < ilist.Count; j++)
                    {
                        if (ilist[i].Score < ilist[j].Score)
                        {
                            Info info = ilist[j];
                            ilist[j] = ilist[i];
                            ilist[i] = info;
                        }
                    }
                }
                Response.Write("用户名：" + ilist[0].Username + " 年龄：" + ilist[0].Age + " 得分：" + ilist[0].Score);
            }
        }
        public class Info
        {
            private string username;            public string Username
            {
                get { return username; }
                set { username = value; }
            }
            private int age;            public int Age
            {
                get { return age; }
                set { age = value; }
            }
            private int score;            public int Score
            {
                get { return score; }
                set { score = value; }
            }
        }

Answer 8

给出了比较的代码：
至于从文件中读取出来，我想这个也是很简单的事情;楼主可以自己去实现以下。
部分的代码如下：/*
             * 刘德华|50|300 
             * 郭德纲|60|500
             * 小沈阳|30|400 
             */
            List<Person> persons = new List<Person>();
            Person p=new Person();
            p.Name="刘德华";
            p.Age=50;
            p.Score=300;
            persons.Add(p);            p = new Person();
            p.Name = "郭德纲";
            p.Age = 60;
            p.Score = 500;
            persons.Add(p);            p = new Person();
            p.Name = "小沈阳";
            p.Age = 30;
            p.Score = 400;
            persons.Add(p);            persons.Sort(new PersonCompare());            Person maxPerson = persons[persons.Count-1];
            Response.Write(string.Format("得分最多的人是:{0}, 年龄是:{1}",maxPerson.Name,maxPerson.Age.ToString()));
 public class Person
    {
        public string Name { get; set; }
        public int Age { get; set; }
        public int Score { get; set; }
    }    public class PersonCompare : IComparer<Person>
    {        #region IComparer<Person> Members        public int Compare(Person x, Person y)
        {
            return x.Score.CompareTo(y.Score);
        }        #endregion
    }

Answer 9

protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                List<Info> list = new List<Info>();
                StringBuilder sb = new StringBuilder();
                string path = Server.MapPath("/Merchants/txt.txt");
                string[] str = File.ReadAllLines(path, Encoding.GetEncoding("gb2312"));
                foreach (string s in str)
                {
                    string[] result = s.Split('|');
                    Info info = new Info();
                    info.Username = result[0].ToString();
                    info.Age = Convert.ToInt32(result[1]);
                    info.Score = Convert.ToInt32(result[2]);
                    list.Add(info);
                }
                list.Sort(new InfoCompare());
                Response.Write("用户名：" + list[0].Username + " 年龄：" + list[0].Age + " 得分：" + list[0].Score);
            }
        }
        public class InfoCompare : IComparer<Info>
        {
            public int Compare(Info x, Info y)
            {
                return y.Score.CompareTo(x.Score);
            }
        }
        public class Info
        {
            private string username;            public string Username
            {
                get { return username; }
                set { username = value; }
            }
            private int age;            public int Age
            {
                get { return age; }
                set { age = value; }
            }
            private int score;            public int Score
            {
                get { return score; }
                set { score = value; }
            }
        }