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What is the Capacity property of an ArrayList class in C#?
The capacity property in ArrayList class gets or sets the number of elements that the ArrayList can contain.
Capacity is always greater than count. For capacity property −
arrList.Capacity
The default capacity is 4. If 5 elements are there, then its capacity is doubled and would be 8. This goes on.
You can try to run the following the code to implement Capacity property in C#. This also shows what we discussed above −
Example
using System;
using System.Collections;
class Demo {
public static void Main() {
ArrayList arrList = new ArrayList();
arrList.Add(19);
arrList.Add(44);
arrList.Add(22);
ArrayList arrList2 = new ArrayList();
arrList2.Add(19);
arrList2.Add(44);
arrList2.Add(64);
arrList2.Add(32);
arrList2.Add(99);
Console.WriteLine("ArrayList1 - Total elements: "+arrList.Count);
Console.WriteLine("ArrayList1 - Capacity: "+arrList.Capacity);
Console.WriteLine("ArrayList2 - Total elements: "+arrList2.Count);
Console.WriteLine("ArrayList2 - Capacity: "+arrList2.Capacity);
}
}Output
ArrayList1 - Total elements: 3 ArrayList1 - Capacity: 4 ArrayList2 - Total elements: 5 ArrayList2 - Capacity: 8
Updated on: 20-Jun-2020
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