PrintingPermission 类

定义

控制对打印机的访问。Controls access to printers. 无法继承此类。This class cannot be inherited.

public ref class PrintingPermission sealed : System::Security::CodeAccessPermission, System::Security::Permissions::IUnrestrictedPermission
[System.Serializable]
public sealed class PrintingPermission : System.Security.CodeAccessPermission, System.Security.Permissions.IUnrestrictedPermission
type PrintingPermission = class
    inherit CodeAccessPermission
    interface IUnrestrictedPermission
Public NotInheritable Class PrintingPermission
Inherits CodeAccessPermission
Implements IUnrestrictedPermission
继承
PrintingPermission
属性
实现

构造函数

PrintingPermission(PermissionState)

根据指定,使用完全限制或不受限制的访问初始化 PrintingPermission 类的新实例。Initializes a new instance of the PrintingPermission class with either fully restricted or unrestricted access, as specified.

PrintingPermission(PrintingPermissionLevel)

使用指定的打印访问级别初始化 PrintingPermission 类的新实例。Initializes a new instance of the PrintingPermission class with the level of printing access specified.

属性

Level

获取或设置代码的打印访问级别。Gets or sets the code's level of printing access.

方法

Assert()

声明调用代码能够通过调用此方法的代码,访问受权限请求保护的资源,即使未对堆栈中处于较高位置的调用方授予访问该资源的权限。Declares that the calling code can access the resource protected by a permission demand through the code that calls this method, even if callers higher in the stack have not been granted permission to access the resource. 使用 Assert() 会引起安全问题。Using Assert() can create security issues.

(继承自 CodeAccessPermission)
Copy()

创建并返回与当前权限对象相同的副本。Creates and returns an identical copy of the current permission object.

Demand()

如果未对调用堆栈中处于较高位置的所有调用方授予当前实例所指定的权限,则在运行时强制 SecurityExceptionForces a SecurityException at run time if all callers higher in the call stack have not been granted the permission specified by the current instance.

(继承自 CodeAccessPermission)
Deny()

防止处于调用堆栈较高位置的调用函数使用可以调用此方法来访问当前实例指定资源的代码。Prevents callers higher in the call stack from using the code that calls this method to access the resource specified by the current instance.

(继承自 CodeAccessPermission)
Equals(Object)

确定指定的 CodeAccessPermission 对象是否等于当前的 CodeAccessPermissionDetermines whether the specified CodeAccessPermission object is equal to the current CodeAccessPermission.

(继承自 CodeAccessPermission)
FromXml(SecurityElement)

通过 XML 编码重新构造具有指定状态的安全对象。Reconstructs a security object with a specified state from an XML encoding.

GetHashCode()

获取 CodeAccessPermission 对象的哈希代码,此代码适合在哈希算法和数据结构(例如哈希表)中使用。Gets a hash code for the CodeAccessPermission object that is suitable for use in hashing algorithms and data structures such as a hash table.

(继承自 CodeAccessPermission)
GetType()

获取当前实例的 TypeGets the Type of the current instance.

(继承自 Object)
Intersect(IPermission)

创建并返回当前权限对象和目标权限对象的交集权限。Creates and returns a permission that is the intersection of the current permission object and a target permission object.

IsSubsetOf(IPermission)

确定当前权限对象是否是指定权限的子集。Determines whether the current permission object is a subset of the specified permission.

IsUnrestricted()

获取一个值,该值指示该权限是否不受限制。Gets a value indicating whether the permission is unrestricted.

MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
PermitOnly()

防止处于调用堆栈较高位置的调用函数使用此代码,此代码将调用此方法来访问除当前实例指定的资源以外的所有资源。Prevents callers higher in the call stack from using the code that calls this method to access all resources except for the resource specified by the current instance.

(继承自 CodeAccessPermission)
ToString()

创建并返回当前权限对象的字符串表示形式。Creates and returns a string representation of the current permission object.

(继承自 CodeAccessPermission)
ToXml()

创建安全对象及其当前状态的 XML 编码。Creates an XML encoding of the security object and its current state.

Union(IPermission)

创建一个将权限对象和目标权限对象组合在一起的权限。Creates a permission that combines the permission object and the target permission object.

显式接口实现

IPermission.Demand() (继承自 CodeAccessPermission)
IStackWalk.Assert() (继承自 CodeAccessPermission)
IStackWalk.Demand() (继承自 CodeAccessPermission)
IStackWalk.Deny() (继承自 CodeAccessPermission)
IStackWalk.PermitOnly() (继承自 CodeAccessPermission)

适用于