TypeDescriptorPermission 类

定义

警告:已过时

Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}

定义对 TypeDescriptor 类的部分信任访问。Defines partial-trust access to the TypeDescriptor class.

public ref class TypeDescriptorPermission sealed : System::Security::CodeAccessPermission, System::Security::Permissions::IUnrestrictedPermission
public sealed class TypeDescriptorPermission : System.Security.CodeAccessPermission, System.Security.Permissions.IUnrestrictedPermission
[System.Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public sealed class TypeDescriptorPermission : System.Security.CodeAccessPermission, System.Security.Permissions.IUnrestrictedPermission
[System.Serializable]
public sealed class TypeDescriptorPermission : System.Security.CodeAccessPermission, System.Security.Permissions.IUnrestrictedPermission
type TypeDescriptorPermission = class
    inherit CodeAccessPermission
    interface IUnrestrictedPermission
[<System.Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
type TypeDescriptorPermission = class
    inherit CodeAccessPermission
    interface IUnrestrictedPermission
[<System.Serializable>]
type TypeDescriptorPermission = class
    inherit CodeAccessPermission
    interface IUnrestrictedPermission
Public NotInheritable Class TypeDescriptorPermission
Inherits CodeAccessPermission
Implements IUnrestrictedPermission
继承
TypeDescriptorPermission
属性
实现

注解

TypeDescriptorPermission类定义对类的以下方法的访问 TypeDescriptorThe TypeDescriptorPermission class defines access to the following methods on the TypeDescriptor class.

构造函数

TypeDescriptorPermission(PermissionState)

初始化 TypeDescriptorPermission 类的新实例。Initializes a new instance of the TypeDescriptorPermission class.

TypeDescriptorPermission(TypeDescriptorPermissionFlags)

初始化具有指定权限标志的 TypeDescriptorPermission 类的新实例。Initializes a new instance of the TypeDescriptorPermission class with the specified permission flags.

属性

Flags

获取或设置该类型描述符的 TypeDescriptorPermissionFlagsGets or sets the TypeDescriptorPermissionFlags for the type descriptor.

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()

由派生类实现时,创建并返回当前权限对象的相同副本。When implemented by a derived class, 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()
已过时。
已过时。

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)

当在派生类中替代时,用 XML 编码重新构造具有指定状态的安全对象。When overridden in a derived class, 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)

通过派生类实现时,创建和返回是当前权限和指定权限的交集的权限。When implemented by a derived class, creates and returns a permission that is the intersection of the current permission and the specified permission.

IsSubsetOf(IPermission)

通过派生类实现时,确定当前权限是否为指定权限的子集。When implemented by a derived class, determines whether the current permission is a subset of the specified permission.

IsUnrestricted()

获取一个值,该值指示是否可以从部分信任的代码调用类型描述符。Gets a value that indicates whether the type descriptor may be called from partially trusted code.

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()

当在派生类中重写时,创建安全对象及其当前状态的 XML 编码。When overridden in a derived class, creates an XML encoding of the security object and its current state.

Union(IPermission)

当在派生类中重写时,则创建属于当前权限与指定权限的并集的权限。When overridden in a derived class, creates a permission that is the union of the current permission and the specified permission.

显式接口实现

IPermission.Demand()

如果不满足安全要求,则会在运行时引发 SecurityExceptionThrows a SecurityException at run time if the security requirement is not met.

(继承自 CodeAccessPermission)
IStackWalk.Assert()

断言调用代码可以访问当前权限对象所标识的资源,即使尚未对堆栈中的高级调用方授予访问该资源的权限。Asserts that the calling code can access the resource identified by the current permission object, even if callers higher in the stack have not been granted permission to access the resource.

(继承自 CodeAccessPermission)
IStackWalk.Demand()

在运行时确定调用堆栈中的所有调用方是否已被授予当前权限对象所指定的权限。Determines at run time whether all callers in the call stack have been granted the permission specified by the current permission object.

(继承自 CodeAccessPermission)
IStackWalk.Deny()

将导致通过调用代码传递的当前对象的每个 Demand() 失败。Causes every Demand() for the current object that passes through the calling code to fail.

(继承自 CodeAccessPermission)
IStackWalk.PermitOnly()

导致所有对象的每个 Demand()(除了通过调用代码的当前那个)失败,即使调用堆栈中较高级别的代码已被授予访问其他资源的权限也是如此。Causes every Demand() for all objects except the current one that pass through the calling code to fail, even if code higher in the call stack has been granted permission to access other resources.

(继承自 CodeAccessPermission)

适用于

另请参阅