Indexers

Question

hi Can any one tell me with example Can i overlaod the Indexers in C#...? And what is the real use of indexers and indexers override...?

Vulpes · Answer

Yes you can overload indexers in C#. The purpose of overloading is just the same as why you'd want to overload a method - to allow it to be called with different numbers or types of parameters. Here's an example: using System; class NamesCollection { string[] names; public string this[int index] { get { return names[index]; } set { names[index] = value; } } public int this[string name] { get { for(int i = 0; i { if (names[i] == name) return i; } return -1; } } public NamesCollection(string[] names) { this.names = names; } } class Test { static void Main() { string[] names = {Fred Dave Diana}; NamesCollection nc = new NamesCollection(names); Console.WriteLine(nc[1]); // Dave Console.WriteLine(nc[Diana]); // 2 Console.ReadKey(); } }