搜索<T>

Question

讓我們有這樣的代碼：

class student :IComparable , IComparable<student> 
{ 
    public string name = ""; 

    public override string ToString() 
    { 
     return name; 
    } 

    #region IComparable Members 

    public int CompareTo(object obj) 
    { 
     if (this.name.Equals(((student)obj).name)) 
      return 0 ; 
     else 
      return -1 ; 
    } 

    #endregion 

    #region IComparable<student> Members 

    public int CompareTo(student other) 
    { 
     if (this.name.Equals (other.name)) 
      return 0 ; 
     else 
      return -1 ; 
    } 

    #endregion 
} 

我是從這個類中主要像創建的LinkedList：

LinkedList<student> list = new LinkedList<student>(); 
list.AddLast(new student { name="Farah"}); 
list.AddLast(new student { name="Noor"}); 
list.AddLast(new student { name="Reem"}); 

foreach (student s in list) 
{ 
    Console.WriteLine(s); 
} 

它的打印： 法拉 努爾 REEM

但是當我嘗試搜索任何元素時，它找不到它，如：

Console.WriteLine(list.Contains(new student{ name="Noor"})); 

This Print false雖然「學生」類實現了「IComparable，IComparable」！

我應該怎麼做？

Answer 1

問題：Contains不能用於IComparable接口。它使用Equals方法。 SO覆蓋它：

public override bool Equals(object obj) 
    { 
     return this.CompareTo(((IComparable)obj)) == 0; 
    } 

Answer 2

實現你的學生類Equals和GetHashCode。

• Guidelines for Implementing Equals and the Equality Operator (==)