C# | Add an object to the end of Collection<T>

Collection<T>.Add(T) method is used to add an object to the end of the Collection<T>. Syntax :

public void Add (T item);

Here, item is the object to be added to the end of the Collection<T>. The value can be null for reference types. Below given are some examples to understand the implementation in a better way: Example 1: Output:

The number of elements in myColl are : 5
The elements in myColl are : 
A
B
C
D
E

Example 2:

Output:

The number of elements in myColl are : 4
The elements in myColl are : 
2
3
4
5

Note:

• Collection<T> accepts null as a valid value for reference types and allows duplicate elements.
• This method is an O(1) operation.

Reference:

• https://learn.microsoft.com/en-us/dotnet/api/system.collections.objectmodel.collection-1.add?view=netframework-4.7.2