Lập trình C# | SortedList hoạt động như thế nào? Tại sao báo lỗi?

[bindirt]

            SortedList sort = new SortedList();
            sort.Add(new Fish("bin"),1);
            sort.Add(new Fish("BIN"), 2);

            foreach (DictionaryEntry entry in sort)
            {
                Console.WriteLine("{0} = {1}", entry.Key, entry.Value);
            }

public class Fish : IComparer
        {
            string name;
            public Fish(string theName)
            {
                name = theName;
            }

            public override bool Equals(object obj)
            {
                Fish f = obj as Fish;
                if (f != null)
                    return String.Equals(name, f.name);
                return false;
            }

            public override int GetHashCode()
            {
                return name.GetHashCode();
            }

           

            #region IComparer Members

            public int Compare(object x, object y)
            {
                CaseInsensitiveComparer com = new CaseInsensitiveComparer();
                return com.Compare(x, y);
            }

            #endregion
        }

Error: "Failed to compare two elements in the array."

[neverland87]

Với đoạn code của bạn, mình sửa lại như sau thì chạy OK

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            SortedList sort = new SortedList();
            Fish fish01 = new Fish("BIN");
            Fish fish02 = new Fish("bin");
            sort.Add(fish01.Name, 1);
            sort.Add(fish02.Name, 2);
            foreach (DictionaryEntry entry in sort)
                Console.WriteLine("{0} = {1}", entry.Key, entry.Value);
        }
    }
    public class Fish : IComparer
    {
        string name;
        public Fish(string theName)
        {
            name = theName;
        }
        public string  Name
        {
            get
            {
                return name;
            }
            set
            {
                name = value;
            }
        }
        public override bool Equals(object obj)
        {
            Fish f = obj as Fish;
            if (f!=null)
            {
                return string.Equals(name, f.name);
            }
            return false;
        }
        public override int GetHashCode()
        {
            return name.GetHashCode();
        }
        public int Compare(object x, object y)
        {
            CaseInsensitiveComparer com = new CaseInsensitiveComparer();
            return com.Compare(x, y);
        }
    }
}

[bindirt]

Theo MSDN thì:

public virtual void Add (	Object key,Object value)

Vì sao add ri lại báo lỗi:

            sort.Add(new Fish("bin"),1);
            sort.Add(new Fish("BIN"), 2);