EventWaitHandleRights 列舉

定義

命名空間:

System.Security.AccessControl

組件:

System.Threading.AccessControl.dll

套件:

System.Threading.AccessControl v8.0.0

來源:

EventWaitHandleSecurity.cs

指定可套用至具名系統事件物件的存取控制 (Access Control) 權限。

此列舉支援其成員值的位元組合。

public enum class EventWaitHandleRights

[System.Flags]
public enum EventWaitHandleRights

[<System.Flags>]
type EventWaitHandleRights = 

Public Enum EventWaitHandleRights

繼承

Object

ValueType

Enum

EventWaitHandleRights

屬性

FlagsAttribute

欄位

ChangePermissions	262144	變更與具名事件相關聯之安全性和稽核規則的權限。
Delete	65536	刪除具名事件的權限。
FullControl	2031619	對具名事件執行完全控制以及修改其存取規則和稽核規則的權限。
Modify	2	設定或重設具名事件之信號狀態的權限。
ReadPermissions	131072	開啟並複製具名事件之存取規則和稽核規則的權限。
Synchronize	1048576	等候具名事件的權限。
TakeOwnership	524288	變更具名事件擁有人的權限。

範例

下列程式碼範例示範建立和使用 物件時的值用法 EventWaitHandleRightsEventWaitHandleAccessRule 。 此範例會 EventWaitHandleSecurity 建立 物件、新增規則，以允許和拒絕目前使用者的各種許可權，並顯示產生的規則組。 然後，此範例會允許目前使用者的新許可權，並顯示結果，顯示新許可權會與現有 AccessControlType.Allow 規則合併。

注意

這個範例不會將安全性物件附加至 EventWaitHandle 物件;請參閱 EventWaitHandleSecurity 、 EventWaitHandle.GetAccessControl 方法和 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);
    }

    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

備註

當您建立 EventWaitHandleAccessRule 物件時， EventWaitHandleRights 請使用 列舉來指定存取控制許可權。 若要將存取權限套用至具名系統事件，請先將物件新增 EventWaitHandleAccessRule 至物件，然後使用建構函式或 EventWaitHandle.SetAccessControl 方法將物件附加 EventWaitHandleSecurity 至具名系統事件 EventWaitHandle.EventWaitHandle(Boolean, EventResetMode, String, Boolean, EventWaitHandleSecurity)EventWaitHandleSecurity 。

另請參閱

• EventWaitHandleAccessRule
• EventWaitHandleSecurity