Adds an access rule to the Discretionary Access Control List (DACL) that is associated with the current System.IO.Pipes.PipeSecurity object.
The PipeSecurity.AddAccessRule(PipeAccessRule) method adds a new rule to the list of rules that a System.IO.Pipes.PipeSecurity object contains.If an access control list (ACL) already exists for the specified rule, the PipeSecurity.AddAccessRule(PipeAccessRule) method will still add the rule, with one exception: a System.IO.Pipes.PipeAccessRule object that is created using the System.Security.AccessControl.AccessControlType.Deny value supersedes an object that is created using the System.Security.AccessControl.AccessControlType.Allow value.