C# | Remove all elements from the Collection<T>

Collection<T>.Clear method is used to remove all elements from the Collection<T>. Syntax:

public void Clear ();

Below given are some examples to understand the implementation in a better way: Example 1: Output:

Count : 5
A
B
C
D
E
Count : 0

Example 2:

Output:

Count : 4
2
3
4
5
Count : 0

Note:

• Count is set to zero, and references to other objects from elements of the collection are also released.
• This method is an O(n) operation, where n is Count.

Reference:

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