What is the namespace for ArrayList in C#?

The ArrayList class represents an array list and it can contain elements of any data types. The ArrayList class is defined in the System. Collections namespace. An ArrayList is dynamic array and grows automatically when new items are added to the collection.

Are there Arraylists in C#?

In C#, the ArrayList is a non-generic collection of objects whose size increases dynamically. It is the same as Array except that its size increases dynamically. An ArrayList can be used to add unknown data where you don’t know the types and the size of the data.

How do you declare an array of strings?

Consider the below example:

1. // Java Program to add elements in a String Array by creating a new Array.
2. import java. util. Arrays;
3. public class StringArrayDemo2 {
4. public static void main(String[] args) {
5. //Declaring Initial Array.
6. String[] sa = {“A”, “B”, “C” };
7. // Printing the Original Array.
8. System. out.

Which is better list or ArrayList in C#?

ArrayLists vs Lists in C# The List class must always be preferred over the ArrayList class because of the casting overhead in the ArrayList class. The List class can save us from run-time errors faced due to the different data types of the ArrayList class elements. The lists are also very easy-to-use with Linq.

What is the difference between array and ArrayList in C#?

ArrayList belongs to System. Insertion and deletion operation in ArrayList is slower than an Array. Arrays are strongly typed which means it can store only specific type of items or elements. Arraylist are not strongly typed. Array cannot accept null.

Should you use namespace in C#?

They’re used especially to provide the C# compiler a context for all the named information in your program, such as variable names. Without namespaces, for example, you wouldn’t be able to make a class named Console, as . NET already uses one in its System namespace.