IComparable与Icomparer接口问题

Question

class Pxu : IComparable
    {
        public string FirstName;
        public string LastName;
        //public string FirstName
        //{
        //    get;
        //    set;
        //}
        //public string LastName
        //{
        //    get;
        //    set;
        //}
        public Pxu(string str1, string str2)
        {
            this.FirstName = str1;
            this.LastName = str2;
        }
        public int CompareTo(object o)
        {
            Pxu other = o as Pxu;
            int result= this.FirstName.CompareTo(other.FirstName);
            if (result == 0)
                result = this.LastName.CompareTo(other.LastName);
            return result;
        }  
    }        Pxu[] p ={
                        new Pxu("ww","eee"),
                        new Pxu("ytet","sdfer"),
                        new Pxu("uyte","dfeh"),
                    };
            Array.Sort(p);
            foreach (Pxu px in p)
            {
                Console.WriteLine(px);
            }输出得不到我想要的结果 我想要的结果当然是排序而这个输出的是ConsoleApplication2.PxuConsoleApplication2.PxuConsoleApplication2.Pxu输出三次。就解答为什么会是这样

Answer 1

排序是正确的。输出不对。foreach (Pxu px in p)
{
  Console.WriteLine(px.FirstName + px.LastName);
}要么你重写Pxu类的ToString()

Answer 2

public Pxu(string str1, string str2)
  {
  this.FirstName = str1;
  this.LastName = str2;
  }
  public int CompareTo(object o)
  {
  Pxu other = o as Pxu;
  int result= this.FirstName.CompareTo(other.FirstName);
  if (result == 0)
  result = this.LastName.CompareTo(other.LastName);
  return result;
  }
  public override string ToString()
  {
      return string.Format("FirstName:{0},LastName:{1}", this.FirstName, this.LastName);
  }
  } 
Pxu[] p ={
  new Pxu("ww","eee"),
  new Pxu("ytet","sdfer"),
  new Pxu("uyte","dfeh"),
  };
            Array.Sort(p);
            foreach (Pxu px in p)
            {
                Console.WriteLine(px.ToString());
            }

Answer 3

本帖最后由 caozhy 于 2011-06-02 14:21:05 编辑