DirectoryInfo.GetAccessControl 方法

定義

命名空間:

System.IO

組件:

mscorlib.dll

取得目前目錄的存取控制清單 (ACL) 項目。

多載

GetAccessControl()	取得 DirectorySecurity 物件，該物件會封裝由目前 DirectoryInfo 物件所描述之目錄的存取控制清單 (ACL) 項目。
GetAccessControl(AccessControlSections)	取得 DirectorySecurity 物件，該物件會封裝由目前 DirectoryInfo 物件所描述之目錄的指定型別存取控制清單 (ACL) 項目。

備註

使用 GetAccessControl 方法來擷取目前檔案的 ACL) 項目 (訪問控制清單。

如需詳細資訊，請參閱如何：新增或移除存取控制清單項目。

GetAccessControl()

取得 DirectorySecurity 物件，該物件會封裝由目前 DirectoryInfo 物件所描述之目錄的存取控制清單 (ACL) 項目。

public:
 System::Security::AccessControl::DirectorySecurity ^ GetAccessControl();

public System.Security.AccessControl.DirectorySecurity GetAccessControl ();

member this.GetAccessControl : unit -> System.Security.AccessControl.DirectorySecurity

Public Function GetAccessControl () As DirectorySecurity

傳回

DirectorySecurity

DirectorySecurity 物件，封裝目錄的存取控制規則。

例外狀況

SystemException

找不到目錄或無法修改目錄。

UnauthorizedAccessException

目錄是唯讀的。

-或-

這個作業在目前平台不受支援。

-或-

呼叫端沒有必要的權限。

IOException

開啟目錄時發生 I/O 錯誤。

範例

下列範例會使用 GetAccessControl 和 SetAccessControl 方法來新增和移除目錄 (ACL) 項目的訪問控制清單。

using namespace System;
using namespace System::IO;
using namespace System::Security::AccessControl;

// Adds an ACL entry on the specified directory for the
// specified account.
void AddDirectorySecurity(String^ directoryName, String^ account, 
     FileSystemRights rights, AccessControlType controlType)
{
    // Create a new DirectoryInfo object.
    DirectoryInfo^ dInfo = gcnew DirectoryInfo(directoryName);

    // Get a DirectorySecurity object that represents the
    // current security settings.
    DirectorySecurity^ dSecurity = dInfo->GetAccessControl();

    // Add the FileSystemAccessRule to the security settings.
    dSecurity->AddAccessRule( gcnew FileSystemAccessRule(account,
        rights, controlType));

    // Set the new access settings.
    dInfo->SetAccessControl(dSecurity);
}

// Removes an ACL entry on the specified directory for the
// specified account.
void RemoveDirectorySecurity(String^ directoryName, String^ account,
     FileSystemRights rights, AccessControlType controlType)
{
    // Create a new DirectoryInfo object.
    DirectoryInfo^ dInfo = gcnew DirectoryInfo(directoryName);

    // Get a DirectorySecurity object that represents the
    // current security settings.
    DirectorySecurity^ dSecurity = dInfo->GetAccessControl();

    // Add the FileSystemAccessRule to the security settings.
    dSecurity->RemoveAccessRule(gcnew FileSystemAccessRule(account,
        rights, controlType));

    // Set the new access settings.
    dInfo->SetAccessControl(dSecurity);
}    

int main()
{
    String^ directoryName = "TestDirectory";
    String^ accountName = "MYDOMAIN\\MyAccount";
    if (!Directory::Exists(directoryName))
    {
        Console::WriteLine("The directory {0} could not be found.", 
            directoryName);
        return 0;
    }
    try
    {
        Console::WriteLine("Adding access control entry for {0}",
            directoryName);

        // Add the access control entry to the directory.
        AddDirectorySecurity(directoryName, accountName,
            FileSystemRights::ReadData, AccessControlType::Allow);

        Console::WriteLine("Removing access control entry from {0}",
            directoryName);

        // Remove the access control entry from the directory.
        RemoveDirectorySecurity(directoryName, accountName, 
            FileSystemRights::ReadData, AccessControlType::Allow);

        Console::WriteLine("Done.");
    }
    catch (UnauthorizedAccessException^)
    {
        Console::WriteLine("You are not authorised to carry" +
            " out this procedure.");
    }
    catch (System::Security::Principal::
        IdentityNotMappedException^)
    {
        Console::WriteLine("The account {0} could not be found.", accountName);
    }
}

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

namespace FileSystemExample
{
    class DirectoryExample
    {
        public static void Main()
        {
            try
            {
                string DirectoryName = "TestDirectory";

                Console.WriteLine("Adding access control entry for " + DirectoryName);

                // Add the access control entry to the directory.
                AddDirectorySecurity(DirectoryName, @"MYDOMAIN\MyAccount", FileSystemRights.ReadData, AccessControlType.Allow);

                Console.WriteLine("Removing access control entry from " + DirectoryName);

                // Remove the access control entry from the directory.
                RemoveDirectorySecurity(DirectoryName, @"MYDOMAIN\MyAccount", FileSystemRights.ReadData, AccessControlType.Allow);

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

            Console.ReadLine();
        }

        // Adds an ACL entry on the specified directory for the specified account.
        public static void AddDirectorySecurity(string DirectoryName, string Account, FileSystemRights Rights, AccessControlType ControlType)
        {
            // Create a new DirectoryInfo object.
            DirectoryInfo dInfo = new DirectoryInfo(DirectoryName);

            // Get a DirectorySecurity object that represents the
            // current security settings.
            DirectorySecurity dSecurity = dInfo.GetAccessControl();

            // Add the FileSystemAccessRule to the security settings.
            dSecurity.AddAccessRule(new FileSystemAccessRule(Account,
                                                            Rights,
                                                            ControlType));

            // Set the new access settings.
            dInfo.SetAccessControl(dSecurity);
        }

        // Removes an ACL entry on the specified directory for the specified account.
        public static void RemoveDirectorySecurity(string DirectoryName, string Account, FileSystemRights Rights, AccessControlType ControlType)
        {
            // Create a new DirectoryInfo object.
            DirectoryInfo dInfo = new DirectoryInfo(DirectoryName);

            // Get a DirectorySecurity object that represents the
            // current security settings.
            DirectorySecurity dSecurity = dInfo.GetAccessControl();

            // Add the FileSystemAccessRule to the security settings.
            dSecurity.RemoveAccessRule(new FileSystemAccessRule(Account,
                                                            Rights,
                                                            ControlType));

            // Set the new access settings.
            dInfo.SetAccessControl(dSecurity);
        }
    }
}

open System
open System.IO
open System.Security.AccessControl

// Adds an ACL entry on the specified directory for the specified account.
let addDirectorySecurity fileName (account: string) rights controlType =
    // Create a new DirectoryInfo object.
    let dInfo = DirectoryInfo fileName

    // Get a DirectorySecurity object that represents the
    // current security settings.
    let dSecurity = dInfo.GetAccessControl()

    // Add the FileSystemAccessRule to the security settings.
    dSecurity.AddAccessRule(FileSystemAccessRule(account, rights, controlType))

    // Set the new access settings.
    dInfo.SetAccessControl dSecurity

// Removes an ACL entry on the specified directory for the specified account.
let removeDirectorySecurity fileName (account: string) rights controlType =
    // Create a new DirectoryInfo object.
    let dInfo = DirectoryInfo fileName

    // Get a DirectorySecurity object that represents the
    // current security settings.
    let dSecurity = dInfo.GetAccessControl()

    // Add the FileSystemAccessRule to the security settings.
    dSecurity.RemoveAccessRule(FileSystemAccessRule(account, rights, controlType)) |> ignore

    // Set the new access settings.
    dInfo.SetAccessControl dSecurity

try
    let DirectoryName = "TestDirectory"

    printfn $"Adding access control entry for {DirectoryName}"

    // Add the access control entry to the directory.
    addDirectorySecurity DirectoryName @"MYDOMAIN\MyAccount" FileSystemRights.ReadData AccessControlType.Allow

    printfn $"Removing access control entry from {DirectoryName}"

    // Remove the access control entry from the directory.
    removeDirectorySecurity DirectoryName @"MYDOMAIN\MyAccount" FileSystemRights.ReadData AccessControlType.Allow

    printfn "Done."
with e ->
    printfn $"{e}"

Imports System.IO
Imports System.Security.AccessControl



Module DirectoryExample

    Sub Main()
        Try
            Dim DirectoryName As String = "TestDirectory"

            Console.WriteLine("Adding access control entry for " + DirectoryName)

            ' Add the access control entry to the directory.
            AddDirectorySecurity(DirectoryName, "MYDOMAIN\MyAccount", FileSystemRights.ReadData, AccessControlType.Allow)

            Console.WriteLine("Removing access control entry from " + DirectoryName)

            ' Remove the access control entry from the directory.
            RemoveDirectorySecurity(DirectoryName, "MYDOMAIN\MyAccount", FileSystemRights.ReadData, AccessControlType.Allow)

            Console.WriteLine("Done.")
        Catch e As Exception
            Console.WriteLine(e)
        End Try

        Console.ReadLine()

    End Sub


    ' Adds an ACL entry on the specified directory for the specified account.
    Sub AddDirectorySecurity(ByVal FileName As String, ByVal Account As String, ByVal Rights As FileSystemRights, ByVal ControlType As AccessControlType)
        ' Create a new DirectoryInfoobject.
        Dim dInfo As New DirectoryInfo(FileName)

        ' Get a DirectorySecurity object that represents the 
        ' current security settings.
        Dim dSecurity As DirectorySecurity = dInfo.GetAccessControl()

        ' Add the FileSystemAccessRule to the security settings. 
        dSecurity.AddAccessRule(New FileSystemAccessRule(Account, Rights, ControlType))

        ' Set the new access settings.
        dInfo.SetAccessControl(dSecurity)

    End Sub


    ' Removes an ACL entry on the specified directory for the specified account.
    Sub RemoveDirectorySecurity(ByVal FileName As String, ByVal Account As String, ByVal Rights As FileSystemRights, ByVal ControlType As AccessControlType)
        ' Create a new DirectoryInfo object.
        Dim dInfo As New DirectoryInfo(FileName)

        ' Get a DirectorySecurity object that represents the 
        ' current security settings.
        Dim dSecurity As DirectorySecurity = dInfo.GetAccessControl()

        ' Add the FileSystemAccessRule to the security settings. 
        dSecurity.RemoveAccessRule(New FileSystemAccessRule(Account, Rights, ControlType))

        ' Set the new access settings.
        dInfo.SetAccessControl(dSecurity)

    End Sub
End Module

備註

呼叫這個方法多載相當於呼叫 GetAccessControl 方法多載，並在Visual Basic) AccessControlSections.OwnerAccessControlSections.AccessOrOrAccessControlSections.Group 中指定訪問控制區段 | AccessControlSections.GroupAccessControlSections.Access | AccessControlSections.Owner (。

GetAccessControl使用方法來擷取目前檔案的訪問控制清單 (ACL) 專案。

ACL 描述具有或沒有指定檔案或目錄上特定動作許可權的個人和/或群組。 如需詳細資訊，請參閱如何：新增或移除存取控制清單項目。

GetAccessControl(AccessControlSections)

取得 DirectorySecurity 物件，該物件會封裝由目前 DirectoryInfo 物件所描述之目錄的指定型別存取控制清單 (ACL) 項目。

public:
 System::Security::AccessControl::DirectorySecurity ^ GetAccessControl(System::Security::AccessControl::AccessControlSections includeSections);

public System.Security.AccessControl.DirectorySecurity GetAccessControl (System.Security.AccessControl.AccessControlSections includeSections);

member this.GetAccessControl : System.Security.AccessControl.AccessControlSections -> System.Security.AccessControl.DirectorySecurity

Public Function GetAccessControl (includeSections As AccessControlSections) As DirectorySecurity

參數

includeSections

AccessControlSections

其中一個 AccessControlSections 值，指定要接收的存取控制清單 (ACL) 資訊之類型。

傳回

DirectorySecurity

DirectorySecurity 物件，該物件封裝 path 參數所描述之檔案的存取控制規則。

例外狀況

SystemException

找不到目錄或無法修改目錄。

UnauthorizedAccessException

目前的處理序不具有開啟目錄的存取權。
或者
目錄是唯讀的。
或者
這個作業在目前平台不受支援。
或者
呼叫端沒有必要的權限。

IOException

開啟目錄時發生 I/O 錯誤。

備註

GetAccessControl使用方法來擷取目前檔案的訪問控制清單 (ACL) 專案。

ACL 描述具有或沒有指定檔案或目錄上特定動作許可權的個人和/或群組。 如需詳細資訊，請參閱如何：新增或移除存取控制清單項目。