Capacity and element count : ArrayList « Data Structure « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Data Structure
3. ArrayList

using System; 
using System.Collections; 
 
class MainClass { 
  public static void Main() { 
    ArrayList al = new ArrayList(); 
     
    Console.WriteLine("Adding 6 elements"); 
    al.Add('C'); 
    al.Add('A'); 
    al.Add('E'); 
    al.Add('B'); 
    al.Add('D'); 
    al.Add('F'); 
 
    Console.WriteLine("Add enough elements to force ArrayList to grow. Adding 20 more elements"); 
    
    for(int i=0; i < 20; i++) 
      al.Add((char)('a' + i)); 
    Console.WriteLine("Current capacity: " + 
                       al.Capacity); 
    Console.WriteLine("Number of elements after adding 20: " + 
                       al.Count); 
    Console.Write("Contents: "); 
    foreach(char c in al) 
      Console.Write(c + " "); 
    Console.WriteLine("\n"); 
  }
}

Adding 6 elements
Add enough elements to force ArrayList to grow. Adding 20 more elements
Current capacity: 32
Number of elements after adding 20: 26
Contents: C A E B D F a b c d e f g h i j k l m n o p q r s t