Let’s demonstrate an example to prove that how arrays are faster than
arraylist for that go to visual studio and create a simple window
application with a button and two labels like below diagram.
Below is the code snippet.
using System.Collections;// import this namespace to access arraylist.
using System.Diagnostics;// import this namespace to access Stopwatch.
public partial class Form1 : Form
int Array = new int; // here array is declared.
ArrayList objArraylist = new ArrayList();// here array list is declared.
private void button1_Click(object sender, EventArgs e)
Stopwatch objWatch = new Stopwatch();
Stopwatch objWatch1 = new Stopwatch();
Array[i] = DateTime.Now.Second;
foreach (int i in Array)
label1.Text = objWatch.ElapsedTicks.ToString();
for (int i = 0; i < 1000; i++)
foreach (object i in objArraylist)
label2.Text = objWatch1.ElapsedTicks.ToString();
In the above code, I have used Stopwatch to record the time taken by the
array and arraylist to performance actions.
The Output look like below diagram.
Conclusion: -As in ArrayList lots of Boxing and UnBoxing are done
therefore its performance is slower than Array because in Array there is no
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