Check out example codes for "array list dictionary c#". It will help you in understanding the concepts better.

Code Example 1

int[] myIntArray = new int[10];
myIntArray[0] = 0;
myIntArray[1] = 10;
myIntArray[2] = 20;
myIntArray[3] = 30;

// Assignment via loop
for (int i=0; i<myIntArray.Length; i++)
{
  myIntArray[i] = i * 10;
}

// Foreach loop over array
foreach (int element in myIntArray)
{
  Console.WriteLine("${element}");
}

Code Example 2

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

class Program
{
    static void Main()
    {
        Dictionary<string, int> myDictionary = new Dictionary<string, int>();

        myDictionary.Add("bob", 27);
        myDictionary.Add("fred", 33);

        int theAge = myDictionary["bob"];
    }
}

Code Example 3

using System.Collections.Generic;

List<string> myList = new List<string>();

myList.Add("Hello");
myList.Add("World");
myList.Add(10); // Compiler Error

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