索引的重载 str["name"] str[i]

  class Program
     {
         static void Main(string[] args)
         {
             IndexClass names = new IndexClass();
             names[] = "Zara";
             names[] = "Riz";
             names[] = "Nuha";
             names[] = "Asif";
             names[] = "Davinder";
             names[] = "Sunil";
             names[] = "Rubic";
             // 使用带有 int 参数的第一个索引器
             for (int i = ; i < IndexClass.size; i++)
             {
                 Console.WriteLine(names[i]);
             }
             // 使用带有 string 参数的第二个索引器
             Console.WriteLine(names["Nuha"]);
             Console.ReadKey();

         }
     }
     class IndexClass
     {
         private string[] namelist = new string[size];
         public static int size = ;
         //// --构造函数赋值
         public IndexClass()
         {
             for (int i = ; i < size; i++)
             {
                 namelist[i] = "N. A.";
             }

         }
         //重载索引
         public string this[int index]
         {
             get
             {
                 string tmp;

                 if (index >=  && index <= size - )
                 {
                     tmp = namelist[index];
                 }
                 else
                 {
                     tmp = "";
                 }

                 return (tmp);
             }
             set
             {
                 if (index >=  && index <= size - )
                 {
                     namelist[index] = value;
                 }
             }
         }
         public int this[string name]
         {
             get
             {
                 int index = ;
                 while (index < size)
                 {
                     if (namelist[index] == name)
                     {
                         return index;
                     }
                     index++;
                 }
                 return index;
             }

         }

     }