System 2.0.0.0 4.0.0.0 System.Security.AccessControl.AccessRule System.Runtime.InteropServices.ComVisible(false)

The class is one of a set of classes that the .NET Framework provides for managing Windows access control security on named system semaphores. For an overview of these classes, and their relationship to the underlying Windows access control structures, see .

Windows access control security is meaningful only for named system semaphores. If a object represents a local semaphore, access control is irrelevant.

To get a list of the rules currently applied to a named semaphore, use the method to get a object, then use its method to obtain a collection of objects.

objects do not map one-to-one with access control entries in the underlying discretionary access control list (DACL). When you get the set of all access rules for a semaphore, the set contains the minimum number of rules currently required to express all the access control entries.

The underlying access control entries change as you apply and remove rules. The information in rules is merged if possible, to maintain the smallest number of access control entries. Thus, when you read the current list of rules, it might not look exactly like the list of all the rules you have added.

Use objects to specify access rights to allow or deny to a user or group. A object always represents either allowed access or denied access, never both.

To apply a rule to a named system semaphore, use the method to get the object. Modify the object by using its methods to add the rule, and then use the method to reattach the security object.

Changes you make to a object do not affect the access levels of the named semaphore until you call the method to assign the altered security object to the named semaphore.

objects are immutable. Security for a semaphore is modified using the methods of the class to add or remove rules; as you do this, the underlying access control entries are modified.

Security on synchronization objects is not supported for Windows 98 or Windows Millennium Edition.

Represents a set of access rights allowed or denied for a user or group. This class cannot be inherited.

- Constructor
  2.0.0.0
  4.0.0.0
  To be added.

  To enter a , for example by calling the method, a user must have access. To exit the semaphore, by calling the method, the user must have access.

  Initializes a new instance of the class, specifying the user or group the rule applies to, the access rights, and whether the specified access rights are allowed or denied.

  The user or group the rule applies to. Must be of type or a type such as that can be converted to type .
  One of the values specifying whether the rights are allowed or denied.
- Constructor
  2.0.0.0
  4.0.0.0
  To be added.

  To enter a , for example by calling the method, a user must have access. To exit the semaphore, by calling the method, the user must have access.

  This constructor is equivalent to creating an object, by passing to the constructor, and passing the newly created object to the constructor.

  Initializes a new instance of the class, specifying the name of the user or group the rule applies to, the access rights, and whether the specified access rights are allowed or denied.

  The name of the user or group the rule applies to.
  One of the values specifying whether the rights are allowed or denied.
- Property
  2.0.0.0
  4.0.0.0
  System.Security.AccessControl.SemaphoreRights To be added.

  objects are immutable. You can create a new access rule representing a different user, different rights, or a different , but you cannot modify an existing access rule.

  Gets the rights allowed or denied by the access rule.