What is the purpose of ArrayList in .NET?

ArrayList is used to store elements of different data types.

public class sampleClass {
public static void displayList(ArrayList sampleList) {
foreach(var element in sampleList) {
Console.Write(“ “ + element);
}
}
public static void Main() {
ArrayList intList = new ArrayList();
intList.Add(10);
intList.Add(20);
Console.WriteLine(“Elements of integer list are:”);
displayList(intList);
ArrayList stringList = new ArrayList();
stringList.Add(“Hello!”);
stringList.Add(“Have a Nice Day!”);
Console.WriteLine(“Elements of string list are:”);
displayList(stringList);
}
}

Output of this code will be:

Elements of integer list are: 10 20
Elements of string list are: Hello! Have a Nice Day!

ArrayList has many methods like Clear(), AddRange(<list>), RemoveAt(<index>), Insert(<position, element>) and properties like count. You can use them to manipulate on ArrayList elements.

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