EventWaitHandleSecurity.AddAccessRule(EventWaitHandleAccessRule) Yöntem

Tanım

Ad Alanı:

System.Security.AccessControl

Bütünleştirilmiş Kod:

System.Threading.AccessControl.dll

Paket:

System.Threading.AccessControl v9.0.0-preview.3.24172.9

Kaynak:

EventWaitHandleSecurity.cs

Yeni kuralın birleştirilebileceği eşleşen bir erişim denetimi kuralı arar. Hiçbiri bulunmazsa yeni kuralı ekler.

public:
 void AddAccessRule(System::Security::AccessControl::EventWaitHandleAccessRule ^ rule);

public void AddAccessRule (System.Security.AccessControl.EventWaitHandleAccessRule rule);

override this.AddAccessRule : System.Security.AccessControl.EventWaitHandleAccessRule -> unit

Public Sub AddAccessRule (rule As EventWaitHandleAccessRule)

Parametreler

rule

EventWaitHandleAccessRule

Eklenecek erişim denetimi kuralı.

Özel durumlar

ArgumentNullException

rule, null değeridir.

Örnekler

Aşağıdaki kod örneği, kurallar ve Deny kurallar arasındaki Allow ayrımı gösterir ve uyumlu kurallardaki hakların birleşimini gösterir. Örnek bir EventWaitHandleSecurity nesne oluşturur, geçerli kullanıcı için çeşitli haklara izin veren ve reddeden kurallar ekler ve sonuçta elde edilen kural çiftini görüntüler. Örnek daha sonra geçerli kullanıcı için yeni haklara izin verir ve yeni hakların mevcut Allow kuralla birleştirildiğini gösteren sonucu görüntüler.

Not

Bu örnek, güvenlik nesnesini bir EventWaitHandle nesneye eklemez. Güvenlik nesnelerini ekleyen örnekler ve EventWaitHandle.SetAccessControliçinde EventWaitHandle.GetAccessControl bulunabilir.

using System;
using System.Threading;
using System.Security.AccessControl;
using System.Security.Principal;

public class Example
{
    public static void Main()
    {
        // Create a string representing the current user.
        string user = Environment.UserDomainName + "\\" + 
            Environment.UserName;

        // Create a security object that grants no access.
        EventWaitHandleSecurity mSec = new EventWaitHandleSecurity();

        // Add a rule that grants the current user the 
        // right to wait on or signal the event.
        EventWaitHandleAccessRule rule = new EventWaitHandleAccessRule(user, 
            EventWaitHandleRights.Synchronize | EventWaitHandleRights.Modify, 
            AccessControlType.Allow);
        mSec.AddAccessRule(rule);

        // Add a rule that denies the current user the 
        // right to change permissions on the event.
        rule = new EventWaitHandleAccessRule(user, 
            EventWaitHandleRights.ChangePermissions, 
            AccessControlType.Deny);
        mSec.AddAccessRule(rule);

        // Display the rules in the security object.
        ShowSecurity(mSec);

        // Add a rule that allows the current user the 
        // right to read permissions on the event. This rule
        // is merged with the existing Allow rule.
        rule = new EventWaitHandleAccessRule(user, 
            EventWaitHandleRights.ReadPermissions, 
            AccessControlType.Allow);
        mSec.AddAccessRule(rule);

        ShowSecurity(mSec);
    }

    private static void ShowSecurity(EventWaitHandleSecurity security)
    {
        Console.WriteLine("\r\nCurrent access rules:\r\n");

        foreach(EventWaitHandleAccessRule ar in 
            security.GetAccessRules(true, true, typeof(NTAccount)))
        {
            Console.WriteLine("        User: {0}", ar.IdentityReference);
            Console.WriteLine("        Type: {0}", ar.AccessControlType);
            Console.WriteLine("      Rights: {0}", ar.EventWaitHandleRights);
            Console.WriteLine();
        }
    }
}

/*This code example produces output similar to following:

Current access rules:

        User: TestDomain\TestUser
        Type: Deny
      Rights: ChangePermissions

        User: TestDomain\TestUser
        Type: Allow
      Rights: Modify, Synchronize


Current access rules:

        User: TestDomain\TestUser
        Type: Deny
      Rights: ChangePermissions

        User: TestDomain\TestUser
        Type: Allow
      Rights: Modify, ReadPermissions, Synchronize
 */

Imports System.Threading
Imports System.Security.AccessControl
Imports System.Security.Principal

Public Class Example

    Public Shared Sub Main()

        ' Create a string representing the current user.
        Dim user As String = Environment.UserDomainName _ 
            & "\" & Environment.UserName

        ' Create a security object that grants no access.
        Dim mSec As New EventWaitHandleSecurity()

        ' Add a rule that grants the current user the 
        ' right to wait on or signal the event.
        Dim rule As New EventWaitHandleAccessRule(user, _
            EventWaitHandleRights.Synchronize _
            Or EventWaitHandleRights.Modify, _
            AccessControlType.Allow)
        mSec.AddAccessRule(rule)

        ' Add a rule that denies the current user the 
        ' right to change permissions on the event.
        rule = New EventWaitHandleAccessRule(user, _
            EventWaitHandleRights.ChangePermissions, _
            AccessControlType.Deny)
        mSec.AddAccessRule(rule)

        ' Display the rules in the security object.
        ShowSecurity(mSec)

        ' Add a rule that allows the current user the 
        ' right to read permissions on the event. This rule
        ' is merged with the existing Allow rule.
        rule = New EventWaitHandleAccessRule(user, _
            EventWaitHandleRights.ReadPermissions, _
            AccessControlType.Allow)
        mSec.AddAccessRule(rule)

        ShowSecurity(mSec)

    End Sub 

    Private Shared Sub ShowSecurity(ByVal security As EventWaitHandleSecurity)
        Console.WriteLine(vbCrLf & "Current access rules:" & vbCrLf)

        For Each ar As EventWaitHandleAccessRule In _
            security.GetAccessRules(True, True, GetType(NTAccount))

            Console.WriteLine("        User: {0}", ar.IdentityReference)
            Console.WriteLine("        Type: {0}", ar.AccessControlType)
            Console.WriteLine("      Rights: {0}", ar.EventWaitHandleRights)
            Console.WriteLine()
        Next

    End Sub
End Class 

'This code example produces output similar to following:
'
'Current access rules:
'
'        User: TestDomain\TestUser
'        Type: Deny
'      Rights: ChangePermissions
'
'        User: TestDomain\TestUser
'        Type: Allow
'      Rights: Modify, Synchronize
'
'
'Current access rules:
'
'        User: TestDomain\TestUser
'        Type: Deny
'      Rights: ChangePermissions
'
'        User: TestDomain\TestUser
'        Type: Allow
'      Rights: Modify, ReadPermissions, Synchronize

Açıklamalar

yöntemi, AddAccessRule aynı kullanıcı veya gruba ve ile aynı AccessControlTyperuleolan kuralları arar. Hiçbiri bulunmazsa rule eklenir. Eşleşen bir kural bulunursa, içindeki rule haklar mevcut kuralla birleştirilir.