EventWaitHandleRights 枚举

定义

命名空间:

System.Security.AccessControl

程序集:

System.Threading.AccessControl.dll

包:

System.Threading.AccessControl v8.0.0

Source:

EventWaitHandleSecurity.cs

指定可应用于命名的系统事件对象的访问控制权限。

此枚举支持其成员值的按位组合。

public enum class EventWaitHandleRights

[System.Flags]
public enum EventWaitHandleRights

[<System.Flags>]
type EventWaitHandleRights = 

Public Enum EventWaitHandleRights

继承

Object

ValueType

Enum

EventWaitHandleRights

属性

FlagsAttribute

字段

ChangePermissions	262144	更改与命名的事件关联的安全和审核规则的权限。
Delete	65536	删除命名的事件的权限。
FullControl	2031619	对某个命名的事件进行完全控制和修改其访问规则和审核规则的权限。
Modify	2	设置或重置命名的事件的信号发送状态的权限。
ReadPermissions	131072	打开并复制某个命名的事件的访问规则和审核规则的权限。
Synchronize	1048576	在命名的事件上等待的权限。
TakeOwnership	524288	更改命名的事件的所有者的权限。

示例

下面的代码示例演示如何在创建和使用 对象时使用EventWaitHandleRightsEventWaitHandleAccessRule值。 该示例创建一个 EventWaitHandleSecurity 对象，添加允许和拒绝当前用户的各种权限的规则，并显示生成的规则对。 然后，该示例为当前用户允许新权限并显示结果，显示新权限与现有 AccessControlType.Allow 规则合并。

注意

此示例不将安全对象附加到 对象 EventWaitHandle ;请参阅 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

注解

创建EventWaitHandleAccessRule对象时，EventWaitHandleRights使用 枚举指定访问控制权限。 若要对命名系统事件应用访问权限，请先将 对象添加到 EventWaitHandleAccessRule 对象，然后使用 构造函数或 EventWaitHandle.SetAccessControl 方法将该EventWaitHandleSecurity对象附加到命名系统事件EventWaitHandle.EventWaitHandle(Boolean, EventResetMode, String, Boolean, EventWaitHandleSecurity)。EventWaitHandleSecurity

另请参阅

• EventWaitHandleAccessRule
• EventWaitHandleSecurity