FileSystemAccessRule Constructors

Definition

Namespace:

System.Security.AccessControl

Assembly:

System.IO.FileSystem.AccessControl.dll

Initializes a new instance of the FileSystemAccessRule class.

Overloads

FileSystemAccessRule(IdentityReference, FileSystemRights, AccessControlType)	Initializes a new instance of the FileSystemAccessRule class using a reference to a user account, a value that specifies the type of operation associated with the access rule, and a value that specifies whether to allow or deny the operation.
FileSystemAccessRule(String, FileSystemRights, AccessControlType)	Initializes a new instance of the FileSystemAccessRule class using the name of a user account, a value that specifies the type of operation associated with the access rule, and a value that describes whether to allow or deny the operation.
FileSystemAccessRule(IdentityReference, FileSystemRights, InheritanceFlags, PropagationFlags, AccessControlType)	Initializes a new instance of the FileSystemAccessRule class using a reference to a user account, a value that specifies the type of operation associated with the access rule, a value that determines how rights are inherited, a value that determines how rights are propagated, and a value that specifies whether to allow or deny the operation.
FileSystemAccessRule(String, FileSystemRights, InheritanceFlags, PropagationFlags, AccessControlType)	Initializes a new instance of the FileSystemAccessRule class using the name of a user account, a value that specifies the type of operation associated with the access rule, a value that determines how rights are inherited, a value that determines how rights are propagated, and a value that specifies whether to allow or deny the operation.

FileSystemAccessRule(IdentityReference, FileSystemRights, AccessControlType)

Initializes a new instance of the FileSystemAccessRule class using a reference to a user account, a value that specifies the type of operation associated with the access rule, and a value that specifies whether to allow or deny the operation.

C#

public FileSystemAccessRule(System.Security.Principal.IdentityReference identity, System.Security.AccessControl.FileSystemRights fileSystemRights, System.Security.AccessControl.AccessControlType type);

Parameters

identity

IdentityReference

An IdentityReference object that encapsulates a reference to a user account.

fileSystemRights

FileSystemRights

One of the FileSystemRights values that specifies the type of operation associated with the access rule.

type

AccessControlType

One of the AccessControlType values that specifies whether to allow or deny the operation.

Exceptions

ArgumentException

The identity parameter is not an IdentityReference object.

ArgumentNullException

The identity parameter is null.

ArgumentOutOfRangeException

An incorrect enumeration was passed to the type parameter.

Remarks

Use this constructor to create an access control rule that you can persist using the FileSecurity or DirectorySecurity class. Access control rules define user account rights that determine which actions are allowed or disallowed on computers running Microsoft Windows.

FileSystemAccessRule(String, FileSystemRights, AccessControlType)

Initializes a new instance of the FileSystemAccessRule class using the name of a user account, a value that specifies the type of operation associated with the access rule, and a value that describes whether to allow or deny the operation.

C#

public FileSystemAccessRule(string identity, System.Security.AccessControl.FileSystemRights fileSystemRights, System.Security.AccessControl.AccessControlType type);

Parameters

identity

String

The name of a user account.

fileSystemRights

FileSystemRights

One of the FileSystemRights values that specifies the type of operation associated with the access rule.

type

AccessControlType

One of the AccessControlType values that specifies whether to allow or deny the operation.

Exceptions

ArgumentNullException

The identity parameter is null.

ArgumentOutOfRangeException

An incorrect enumeration was passed to the type parameter.

Examples

The following code example uses the FileSecurity class to add and then remove an access control entry (ACE) from a file. You must supply a valid user or group account to run this example.

C#

using System;
using System.IO;
using System.Security.AccessControl;

namespace FileSystemExample
{
    class FileExample
    {
        public static void Main()
        {
            try
            {
                string fileName = "test.xml";

                Console.WriteLine($"Adding access control entry for {fileName}");

                // Add the access control entry to the file.
                AddFileSecurity(fileName, @"DomainName\AccountName",
                    FileSystemRights.ReadData, AccessControlType.Allow);

                Console.WriteLine($"Removing access control entry from {fileName}");

                // Remove the access control entry from the file.
                RemoveFileSecurity(fileName, @"DomainName\AccountName",
                    FileSystemRights.ReadData, AccessControlType.Allow);

                Console.WriteLine("Done.");
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
            }
        }

        // Adds an ACL entry on the specified file for the specified account.
        public static void AddFileSecurity(string fileName, string account,
            FileSystemRights rights, AccessControlType controlType)
        {
            FileInfo fileInfo = new(fileName);
            FileSecurity fSecurity = fileInfo.GetAccessControl();

            // Add the FileSystemAccessRule to the security settings.
            fSecurity.AddAccessRule(new FileSystemAccessRule(account,
                rights, controlType));

            // Set the new access settings.
            fileInfo.SetAccessControl(fSecurity);
        }

        // Removes an ACL entry on the specified file for the specified account.
        public static void RemoveFileSecurity(string fileName, string account,
            FileSystemRights rights, AccessControlType controlType)
        {
            FileInfo fileInfo = new(fileName);
            FileSecurity fSecurity = fileInfo.GetAccessControl();

            // Remove the FileSystemAccessRule from the security settings.
            fSecurity.RemoveAccessRule(new FileSystemAccessRule(account,
                rights, controlType));

            // Set the new access settings.
            fileInfo.SetAccessControl(fSecurity);
        }
    }
}

Remarks

Use this constructor to create an access control rule that you can persist using the FileSecurity or DirectorySecurity class. Access control rules define user account rights that determine which actions are allowed or disallowed on computers running Microsoft Windows.

The identity parameter must identify a valid account on the current computer or domain. The string takes the following form, where DOMAIN is the name of a valid domain or computer name and account is the name of a valid user account on a domain or computer: DOMAIN\account.

FileSystemAccessRule(IdentityReference, FileSystemRights, InheritanceFlags, PropagationFlags, AccessControlType)

Initializes a new instance of the FileSystemAccessRule class using a reference to a user account, a value that specifies the type of operation associated with the access rule, a value that determines how rights are inherited, a value that determines how rights are propagated, and a value that specifies whether to allow or deny the operation.

C#

public FileSystemAccessRule(System.Security.Principal.IdentityReference identity, System.Security.AccessControl.FileSystemRights fileSystemRights, System.Security.AccessControl.InheritanceFlags inheritanceFlags, System.Security.AccessControl.PropagationFlags propagationFlags, System.Security.AccessControl.AccessControlType type);

Parameters

identity

IdentityReference

An IdentityReference object that encapsulates a reference to a user account.

fileSystemRights

FileSystemRights

One of the FileSystemRights values that specifies the type of operation associated with the access rule.

inheritanceFlags

InheritanceFlags

One of the InheritanceFlags values that specifies how access masks are propagated to child objects.

propagationFlags

PropagationFlags

One of the PropagationFlags values that specifies how Access Control Entries (ACEs) are propagated to child objects.

type

AccessControlType

One of the AccessControlType values that specifies whether to allow or deny the operation.

Exceptions

ArgumentException

The identity parameter is not an IdentityReference object.

ArgumentNullException

The identity parameter is null.

ArgumentOutOfRangeException

An incorrect enumeration was passed to the type parameter.

-or-

An incorrect enumeration was passed to the inheritanceFlags parameter.

-or-

An incorrect enumeration was passed to the propagationFlags parameter.

Remarks

Use this constructor to create an access control rule that you can persist using the FileSecurity or DirectorySecurity class. Access control rules define user account rights that determine which actions are allowed or disallowed on computers running Microsoft Windows.

FileSystemAccessRule(String, FileSystemRights, InheritanceFlags, PropagationFlags, AccessControlType)

Initializes a new instance of the FileSystemAccessRule class using the name of a user account, a value that specifies the type of operation associated with the access rule, a value that determines how rights are inherited, a value that determines how rights are propagated, and a value that specifies whether to allow or deny the operation.

C#

public FileSystemAccessRule(string identity, System.Security.AccessControl.FileSystemRights fileSystemRights, System.Security.AccessControl.InheritanceFlags inheritanceFlags, System.Security.AccessControl.PropagationFlags propagationFlags, System.Security.AccessControl.AccessControlType type);

Parameters

identity

String

The name of a user account.

fileSystemRights

FileSystemRights

One of the FileSystemRights values that specifies the type of operation associated with the access rule.

inheritanceFlags

InheritanceFlags

One of the InheritanceFlags values that specifies how access masks are propagated to child objects.

propagationFlags

PropagationFlags

One of the PropagationFlags values that specifies how Access Control Entries (ACEs) are propagated to child objects.

type

AccessControlType

One of the AccessControlType values that specifies whether to allow or deny the operation.

Exceptions

ArgumentNullException

The identity parameter is null.

ArgumentOutOfRangeException

An incorrect enumeration was passed to the type parameter.

-or-

An incorrect enumeration was passed to the inheritanceFlags parameter.

-or-

An incorrect enumeration was passed to the propagationFlags parameter.

Remarks

Use this constructor to create an access control rule that you can persist using the FileSecurity or DirectorySecurity class. Access control rules define user account rights that determine which actions are allowed or disallowed on computers running Microsoft Windows.

The identity parameter must identify a valid account on the current computer or domain. The string takes the following form, where DOMAIN is the name of a valid domain or computer name and account is the name of a valid user account on a domain or computer: DOMAIN\account.