NetworkInformationPermission 类

定义

注意

Code Access Security is not supported or honored by the runtime.

控制对本地计算机的网络信息和通信统计信息的访问。Controls access to network information and traffic statistics for the local computer. 此类不能被继承。This class cannot be inherited.

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

示例

下面的示例创建一个无限制的权限对象。The following example creates an unrestricted permission object.

System::Net::NetworkInformation::NetworkInformationPermission^ unrestricted = gcnew System::Net::NetworkInformation::NetworkInformationPermission( System::Security::Permissions::PermissionState::Unrestricted );

System.Net.NetworkInformation.NetworkInformationPermission unrestricted =
    new System.Net.NetworkInformation.NetworkInformationPermission(
        System.Security.Permissions.PermissionState.Unrestricted);
Dim unrestricted As New System.Net.NetworkInformation.NetworkInformationPermission( _
    System.Security.Permissions.PermissionState.Unrestricted)

注解

此权限用于保护由命名空间中的类返回的数据 System.Net.NetworkInformationThis permission is used to secure data returned by the classes in the System.Net.NetworkInformation namespace.

对于声明性安全,请使用 NetworkInformationPermissionAttribute 类。For declarative security, use the NetworkInformationPermissionAttribute class.

构造函数

NetworkInformationPermission(NetworkInformationAccess)

使用指定的 NetworkInformationAccess 值初始化 NetworkInformationPermission 类的新实例。Initializes a new instance of the NetworkInformationPermission class using the specified NetworkInformationAccess value.

NetworkInformationPermission(PermissionState)

使用指定的 NetworkInformationPermission 初始化 PermissionState 类的新实例。Initializes a new instance of the NetworkInformationPermission class with the specified PermissionState.

属性

Access

获取对此权限控制的网络信息的访问级别。Gets the level of access to network information controlled by this permission.

方法

AddPermission(NetworkInformationAccess)

将指定的值添加到此权限中。Adds the specified value to this permission.

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()

创建并返回此权限的完全相同副本。Creates and returns an identical copy of this permission.

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)

使用指定的 XML 编码设置此权限的状态。Sets the state of this permission using the specified 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)

创建并返回一个权限,该权限是当前权限与指定权限的交集。Creates and returns a permission that is the intersection of the current permission and the specified permission.

IsSubsetOf(IPermission)

确定当前权限是否为指定权限的子集。Determines whether the current permission is a subset of the specified permission.

IsUnrestricted()

返回一个值,该值指示当前权限是否不受限制。Returns a value indicating whether the current 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()

创建此权限状态的 XML 编码。Creates an XML encoding of the state of this permission.

Union(IPermission)

创建一个权限,该权限是此权限与指定权限的并集。Creates a permission that is the union of this 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