FileSystemAclExtensions.Create Метод

public:
[System::Runtime::CompilerServices::Extension]
 static void Create(System::IO::DirectoryInfo ^ directoryInfo, System::Security::AccessControl::DirectorySecurity ^ directorySecurity);

public static void Create(this System.IO.DirectoryInfo directoryInfo, System.Security.AccessControl.DirectorySecurity directorySecurity);

static member Create : System.IO.DirectoryInfo * System.Security.AccessControl.DirectorySecurity -> unit

<Extension()>
Public Sub Create (directoryInfo As DirectoryInfo, directorySecurity As DirectorySecurity)

Параметры

Исключения

Примеры

В следующем примере кода создается новый каталог в временной папке пользователя с указанными атрибутами безопасности каталога:

using System.IO;
using System.Runtime.Versioning;
using System.Security.AccessControl;
using System.Security.Principal;

namespace MyNamespace
{
    public class MyClassCS
    {
        // Attribute to address CA1416 warning:
        // System.IO.FileSystem.AccessControl APIs are  only available on Windows
        [SupportedOSPlatform("windows")]
        static void Main()
        {
            // Create the file security object

            SecurityIdentifier identity = new SecurityIdentifier(
                WellKnownSidType.BuiltinUsersSid, // This maps to "Everyone" user group in Windows
                null); // null is OK for this particular user group. For others, a non-empty value might be required
            FileSystemAccessRule accessRule = new FileSystemAccessRule(identity, FileSystemRights.FullControl, AccessControlType.Allow);

            DirectorySecurity expectedSecurity = new DirectorySecurity();
            expectedSecurity.AddAccessRule(accessRule);

            // Make sure the directory does not exist, then create it

            string dirPath = Path.Combine(Path.GetTempPath(), "directoryToCreate");
            DirectoryInfo dirInfo = new DirectoryInfo(dirPath);
            if (dirInfo.Exists)
            {
                dirInfo.Delete(recursive: true);
            }

            dirInfo.Create(expectedSecurity);
        }
    }
}

Комментарии

Этот метод расширения был добавлен в .NET Core для предоставления функциональных возможностей, предоставляемых методом DirectoryInfo.Create(DirectorySecurity) .NET Framework.

public:
[System::Runtime::CompilerServices::Extension]
 static System::IO::FileStream ^ Create(System::IO::FileInfo ^ fileInfo, System::IO::FileMode mode, System::Security::AccessControl::FileSystemRights rights, System::IO::FileShare share, int bufferSize, System::IO::FileOptions options, System::Security::AccessControl::FileSecurity ^ fileSecurity);

public static System.IO.FileStream Create(this System.IO.FileInfo fileInfo, System.IO.FileMode mode, System.Security.AccessControl.FileSystemRights rights, System.IO.FileShare share, int bufferSize, System.IO.FileOptions options, System.Security.AccessControl.FileSecurity? fileSecurity);

public static System.IO.FileStream Create(this System.IO.FileInfo fileInfo, System.IO.FileMode mode, System.Security.AccessControl.FileSystemRights rights, System.IO.FileShare share, int bufferSize, System.IO.FileOptions options, System.Security.AccessControl.FileSecurity fileSecurity);

static member Create : System.IO.FileInfo * System.IO.FileMode * System.Security.AccessControl.FileSystemRights * System.IO.FileShare * int * System.IO.FileOptions * System.Security.AccessControl.FileSecurity -> System.IO.FileStream

<Extension()>
Public Function Create (fileInfo As FileInfo, mode As FileMode, rights As FileSystemRights, share As FileShare, bufferSize As Integer, options As FileOptions, fileSecurity As FileSecurity) As FileStream

Параметры

Возвращаемое значение

Поток файлов для только что созданного файла.

Исключения

Примеры

В следующем примере кода создается новый текстовый файл в временной папке пользователя, явно указывающий все атрибуты безопасности:

using System;
using System.IO;
using System.Runtime.Versioning;
using System.Security.AccessControl;
using System.Security.Principal;
using System.Text;

namespace MyNamespace
{
    public class MyClassCS
    {
        // Attribute to address CA1416 warning:
        // System.IO.FileSystem.AccessControl APIs are  only available on Windows
        [SupportedOSPlatform("windows")]
        static void Main()
        {
            // Create the file security object

            var identity = new SecurityIdentifier(WellKnownSidType.BuiltinUsersSid, null);
            var accessRule = new FileSystemAccessRule(identity, FileSystemRights.FullControl, AccessControlType.Allow);

            var security = new FileSecurity();
            security.AddAccessRule(accessRule);

            // Make sure the file does not exist, or FileMode.CreateNew will throw

            string filePath = Path.Combine(Path.GetTempPath(), "temp.txt");
            var fileInfo = new FileInfo(filePath);
            if (fileInfo.Exists)
            {
                fileInfo.Delete();
            }

            // Create the file with the specified security and write some text

            using (FileStream stream = fileInfo.Create(
                FileMode.CreateNew,
                FileSystemRights.FullControl,
                FileShare.ReadWrite,
                4096, // Default buffer size
                FileOptions.None,
                security))
            {
                string text = "Hello world!";
                byte[] writeBuffer = new UTF8Encoding(encoderShouldEmitUTF8Identifier: true).GetBytes(text);

                stream.Write(writeBuffer, 0, writeBuffer.Length);
            } // Dispose flushes the file to disk
        }
    }
}

Комментарии

Этот метод расширения был добавлен в .NET Core для привлечения функциональных возможностей, предоставляемых следующими способами:

• Конструктор FileStream(String, FileMode, FileSystemRights, FileShare, Int32, FileOptions, FileSecurity) .NET Framework.
• Метод File.Create(String, Int32, FileOptions, FileSecurity .NET Framework.