HashSet<T>::Count Property
Gets the number of elements that are contained in a set.
Assembly: System.Core (in System.Core.dll)
The capacity of a HashSet<T> object is the number of elements that the object can hold. A HashSet<T> object's capacity automatically increases as elements are added to the object.
The capacity is always greater than or equal to Count. If Count exceeds the capacity while adding elements, the capacity is set to the first prime number that is greater than double the previous capacity.
Retrieving the value of this property is an O(1) operation.
The following example demonstrates how to create, populate, and manipulate two HashSet<T> objects. In this example, both the contents of the set and Count display to the console.
Available since 8
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 4.0
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1