EventWaitHandleSecurity.RemoveAccessRuleAll(EventWaitHandleAccessRule) Metode
Definisi
Penting
Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.
Mencari semua aturan kontrol akses dengan pengguna yang sama dan AccessControlType (izinkan atau tolak) sebagai aturan yang ditentukan dan, jika ditemukan, akan menghapusnya.
public:
void RemoveAccessRuleAll(System::Security::AccessControl::EventWaitHandleAccessRule ^ rule);public void RemoveAccessRuleAll (System.Security.AccessControl.EventWaitHandleAccessRule rule);override this.RemoveAccessRuleAll : System.Security.AccessControl.EventWaitHandleAccessRule -> unitPublic Sub RemoveAccessRuleAll (rule As EventWaitHandleAccessRule)Parameter
Yang EventWaitHandleAccessRule menentukan pengguna dan AccessControlType untuk dicari. Hak apa pun yang ditentukan oleh aturan ini diabaikan.
Pengecualian
ruleadalah null.
Contoh
Contoh kode berikut menunjukkan bahwa RemoveAccessRuleAll metode menghapus semua aturan yang cocok dengan pengguna dan AccessControlType, mengabaikan hak.
Contoh membuat EventWaitHandleSecurity objek, menambahkan aturan yang mengizinkan dan menolak berbagai hak untuk pengguna saat ini, lalu menggabungkan hak tambahan ke Allow dalam aturan. Contoh kemudian membuat aturan baru yang memungkinkan pengguna saat ini untuk mengambil kepemilikan, dan menggunakan aturan tersebut Allow untuk menghapus aturan dari EventWaitHandleSecurity objek.
Catatan
Contoh ini tidak melampirkan objek keamanan ke EventWaitHandle objek. Contoh yang melampirkan objek keamanan dapat ditemukan di EventWaitHandle.GetAccessControl dan EventWaitHandle.SetAccessControl.
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);
// Create a rule that allows the current user to
// take ownership of the event, and use that rule
// to remove the existing Allow rule from the
// EventWaitHandleSecurity object, showing that the user
// and access type must match, while the rights are
// ignored.
Console.WriteLine("Use RemoveAccessRuleAll to remove the Allow rule.");
rule = new EventWaitHandleAccessRule(user,
EventWaitHandleRights.TakeOwnership,
AccessControlType.Allow);
mSec.RemoveAccessRuleAll(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
Use RemoveAccessRuleAll to remove the Allow rule.
Current access rules:
User: TestDomain\TestUser
Type: Deny
Rights: ChangePermissions
*/
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)
' Create a rule that allows the current user to
' take ownership of the event, and use that rule
' to remove the existing allow access rule from
' the EventWaitHandleSecurity object, showing that the user
' and access type must match, while the rights are
' ignored.
Console.WriteLine("Use RemoveAccessRuleAll to remove the Allow rule.")
rule = New EventWaitHandleAccessRule(user, _
EventWaitHandleRights.TakeOwnership, _
AccessControlType.Allow)
mSec.RemoveAccessRuleAll(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
'
'Use RemoveAccessRuleAll to remove the Allow rule.
'
'Current access rules:
'
' User: TestDomain\TestUser
' Type: Deny
' Rights: ChangePermissions
Keterangan
Saat ini EventWaitHandleSecurity dicari untuk aturan yang memiliki pengguna yang sama dan nilai yang sama AccessControlType dengan rule. Hak apa pun yang ditentukan oleh rule diabaikan saat melakukan pencarian ini. Semua aturan yang cocok dihapus. Jika tidak ada aturan yang cocok yang ditemukan, tidak ada tindakan yang diambil.
