C#索引器3 重载

7.索引器  重载

public class Demo

{

private Hashtable name = new Hashtable();

public string this[int index]

{

get

{

return name[index].ToString();

}

set

{

name.Add(index, value);

}

}

public int this[string index]

{

set

{

name.Add(value, index);

}

get

{

foreach (DictionaryEntry dd in name)

{

if (dd.Value.ToString() == index)

{

return Convert.ToInt32(dd.Key);

}

}

return -1;

}

}

}

public class Test

{

public static void Main(string[] args)

{

Demo dd = new Demo();

dd[3] = "Lobin";

dd[4] = "Jack";

Console.WriteLine("3号 是 {0}",dd[3]);

Console.WriteLine("4号 是 {0}",dd[4]);

Console.WriteLine("Lobin的编号为: {0}", dd["Lobin"]);

Console.WriteLine("Jack的编号为: {0}",dd["Jack"]);

Console.ReadKey();

dd["Mark"] = 5;

Console.WriteLine("Mark的编号为 {0}", dd["Mark"]);

Console.ReadKey();

}

}