public NoteService(Arraylist notes)
{
this.notes = notes;
}
public clsSentence()
{
terms = new Arraylist();
}
// creating an empty ArrayList
ArrayList list = new ArrayList();
// adding elements to the ArrayList
list.Add("apple");
list.Add("pear");
list.Add("orange");
list.Add("banana");
// accessing elements using indexing
Console.WriteLine(list[0]); // output: apple
// removing elements
list.RemoveAt(1);
// checking if an element exists
bool containsPear = list.Contains("pear"); // containsPear = false
// creating an ArrayList with initial elements
ArrayList numbers = new ArrayList() { 1, 2, 3, 4, 5 };
// iterating over the ArrayList using a foreach loop
foreach (var number in numbers)
{
Console.WriteLine(number);
}
// creating an ArrayList with elements of different types
ArrayList mixedList = new ArrayList() { "hello", 42, true };
// checking the type of an element using the is keyword
foreach (var item in mixedList)
{
if (item is string)
{
Console.WriteLine($"{item} is a string");
}
else if (item is int)
{
Console.WriteLine($"{item} is an int");
}
else if (item is bool)
{
Console.WriteLine($"{item} is a bool");
}
}
The ArrayList class is included in the .NET Framework Class Library, which is a collection of pre-built code that developers can use to quickly and easily add functionality to their own applications. public NoteService(Arraylist notes)
{
this.notes = notes;
}
public clsSentence()
{
terms = new Arraylist();
}