Objects is like arrays by using "Indexers"

I am here give some introduce about C# object indexers like array.

Define Object indexer
"this" keyword + [ ] is used for defining a object indexer.Take this as a example,you'll get a more complete example shortly.

class yourCls{
   public object this[String passIn] // Declare Indexer.
   {
     get{}
     set{}       
   }
}
 
yourCls indexerCls = new indexerCls();
indexerCls["ObjectIndexer"] = "Sample"; //you can using indexer like this.
 

Example with Collection
This example is using Collection in .Net Framework to implement Get or Set Properties dynamically.

using System;
using System.Collections.Generic;
using System.Collections;
using System.Linq;
using System.Text;

namespace ObjectindexerWithCollection
{
    class DynamicProperties
    {
        public Dictionary<string, string> hData 
            = new Dictionary<string, string>(); //Declare dictionary to handler properties.

        public string this[string parameterName]
        {
            get
            {
                return this.hData[parameterName];
            }
            set
            {
                this.hData[parameterName] = value;
            }
        }

    }
    class Program
    {
        static void Main(string[] args)
        {
            DynamicProperties lbx = new DynamicProperties();
            lbx["test"] = "Object ";  //set Indexer
            lbx["test1"] = "Indexers";//set Indexer

            Console.WriteLine("Here is the sample of {0}{1}", 
                lbx["test"], lbx["test1"]); //get Indexer
           
            Console.ReadLine();
        }

    }
}

Example Output

This C# feature is useful at advanced C# software development. Just take as a note.Its can be using to design internal the "software pattern", you also can Apply in your software depend on your creative thinking.