Note: This class is new in the .NET Framework version 2.0.
Defines the collection of object identifiers (OIDs) that indicates the applications that use the key. This class cannot be inherited.
Namespace: System.Security.Cryptography.X509Certificates Assembly: System (in system.dll)
The following code example demonstrates how to open a user’s personal certificate store and display information about each certificate in the store. This example uses the X509EnhancedKeyUsageExtension class to display the information.