Adds the specified element to a set.
public bool Add(
- Type: T
The element to add to the set.
Type: System.Booleantrue if the element is added to the HashSet<T> object; false if the element is already present.
If Count already equals the capacity of the HashSet<T> object, the capacity is automatically adjusted to accommodate the new item.
If Count is less than the capacity of the internal array, this method is an O(1) operation. If the HashSet<T> object must be resized, this method becomes an O(n) operation, where n is Count.
Supported in: 5, 4