C# (CSharp) arrayList Examples

Programming Language: C# (CSharp)

Class/Type: arrayList

Examples at hotexamples.com: 2

The ArrayList is a collection class in the System.Collections namespace of the .NET Framework, specifically in the C# language. It is a dynamic array that can resize itself as needed, providing an alternative to fixed-size arrays. It can hold elements of any data type and allows random access of its elements using indexing.

Example 1:

// 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

Example 2:

// 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);
}

Example 3:

// 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.

C# (CSharp) arrayList - 2 examples found. These are the top rated real world C# (CSharp) examples of arrayList extracted from open source projects. You can rate examples to help us improve the quality of examples.

Frequently Used Methods

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arrayListMethod(2)

Get(1)

Set(1)

Example #1

Show file

File: UnitTest1.cs Project: JacobLRL/sparta-csharp-labs

        public void Lab113ArrayListTest()
        {
            var instance = new arrayList();

            Assert.AreEqual(480, instance.arrayListMethod(1, 2, 3, 4));
            Assert.AreEqual(48000, instance.arrayListMethod(10, 20, 30, 40));
        }

Example #2

Show file

File: LabsTest.cs Project: SamBWilliams/2019-02-c-sharp-labs

        public void Lab113ArrayListTest()
        {
            var expected       = -10;
            var instanceLab113 = new arrayList();

            var actual = instanceLab113.arrayListMethod(10, 20, 30, 40);

            Assert.AreEqual(expected, actual);
        }