FileSystemAclExtensions.Create Metod

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)

Parametrar

Undantag

Exempel

I följande kodexempel skapas en ny katalog i användarens temporära mapp med de angivna katalogsäkerhetsattributen:

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);
        }
    }
}

Kommentarer

Den här tilläggsmetoden har lagts till i .NET Core för att ta med de funktioner som tillhandahölls av metoden 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

Parametrar

Returer

En filström för den nyligen skapade filen.

Undantag

Exempel

I följande kodexempel skapas en ny textfil i användarens temporära mapp, som uttryckligen anger alla säkerhetsattribut:

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
        }
    }
}

Kommentarer

Den här tilläggsmetoden lades till i .NET Core för att få de funktioner som tillhandahölls av:

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