public PrincipalContext(System.DirectoryServices.AccountManagement.ContextType contextType, string name, string container, System.DirectoryServices.AccountManagement.ContextOptions options)
 {
 }
 public PrincipalContext(System.DirectoryServices.AccountManagement.ContextType contextType, string name, string container, string userName, string password)
 {
 }
 public PrincipalContext(System.DirectoryServices.AccountManagement.ContextType contextType, string name)
 {
 }