ArrayList represents an ordered collection of an object that can be indexed individually. It is basically an alternative to an array. It also allows dynamic memory allocation, adding, searching and sorting items in the list. ArrayList.Add(Object) method adds an object to the end of the ArrayList.
Properties of ArrayList Class:
- Elements can be added or removed from the Array List collection at any point in time.
- The ArrayList is not guaranteed to be sorted.
- The capacity of an ArrayList is the number of elements the ArrayList can hold.
- Elements in this collection can be accessed using an integer index. Indexes in this collection are zero-based.
- It also allows duplicate elements.
- Using multidimensional arrays as elements in an ArrayList collection is not supported.
public virtual int Add (object value);
Here, value is the Object to be added to the end of the ArrayList. The value can be null.
Return Value: This method returns the ArrayList index at which the value has been added.
Exception: This method will give NotSupportedException if the ArrayList is either read-only or fixed size.
Below are the programs to illustrate the use of ArrayList.Add(Object) Method:
A B C D E F
1 2 3 4 5 6
- C# | Remove the first occurrence of a specific object from the ArrayList
- ArrayList in C#
- How to create the ArrayList in C#
- C# | Array vs ArrayList
- C# | ArrayList Class
- C# | Sort the elements in the ArrayList
- C# | How to convert an ArrayList to Array
- C# | Adding elements to the end of the ArrayList
- C# | Get or set the element at the specified index in ArrayList
- C# | Adding the elements to the end of the ArrayList
- C# | Getting an enumerator for the entire ArrayList
- C# | Remove all elements from the ArrayList
- C# | Check if the ArrayList is read-only
- C# | How to get Synchronize access to the ArrayList
- C# | Get or set the number of elements that the ArrayList can contain
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to firstname.lastname@example.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.