索引器 小实例

public class Collections<T>
    {
        private T[] arr;

        public T[] Arr
        {
            get { return arr; }
            set { arr = value; }
        }
        public T this[int index]
        {
            get { return arr[index]; }
            set { this.arr[index] = value; }
        }

        public T this[string value]
        {
           
        }

    }

应用

 static void Main(string[] args)
        {
            Collections<string> cts = new Collections<string>();
            cts.Arr=new string[100];
            cts[0] = "string1";
            cts[1] = "string2";
            Console.WriteLine(cts[0]+" "+cts[1]);

            Console.ReadLine();
        }