FileDialogPermissionAttribute 类

定义

允许对要使用声明性安全应用到代码中的 FileDialogPermission 执行安全操作。Allows security actions for FileDialogPermission to be applied to code using declarative security. 此类不能被继承。This class cannot be inherited.

public ref class FileDialogPermissionAttribute sealed : System::Security::Permissions::CodeAccessSecurityAttribute
[System.Runtime.InteropServices.ComVisible(true)]
[System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true, Inherited=false)]
[System.Serializable]
public sealed class FileDialogPermissionAttribute : System.Security.Permissions.CodeAccessSecurityAttribute
type FileDialogPermissionAttribute = class
    inherit CodeAccessSecurityAttribute
Public NotInheritable Class FileDialogPermissionAttribute
Inherits CodeAccessSecurityAttribute
继承
属性

示例

下面的代码示例演示如何要求调用代码 @no__t 为-0。The following code example demonstrates how to demand that the calling code have FileDialogPermission. 要求通常在托管库(Dll)中进行,以帮助保护方法或类免受潜在的有害代码的影响。Demands are typically made in managed libraries (DLLs) to help protect methods or classes from potentially harmful code.

[FileDialogPermissionAttribute(SecurityAction::Demand,Unrestricted=true)]
[FileDialogPermissionAttribute(SecurityAction.Demand, Unrestricted=true)]
<FileDialogPermissionAttribute(SecurityAction.Demand, _
 Unrestricted := True)> Public Class SampleClass

注解

重要

不再支持部分受信任的代码。Partially trusted code is no longer supported. 此属性在 .NET Core 中不起作用。This attribute has no effect in .NET Core.

允许的声明的范围取决于所使用的 SecurityActionThe scope of the declaration that is allowed depends on the SecurityAction that is used.

安全特性声明的安全信息存储在属性目标的元数据中,由系统在运行时进行访问。The security information declared by a security attribute is stored in the metadata of the attribute target and is accessed by the system at run time. 安全特性仅用于声明性安全。Security attributes are used only for declarative security. 对于命令性安全,请使用相应的权限类。For imperative security, use the corresponding permission class.

构造函数

FileDialogPermissionAttribute(SecurityAction)

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

属性

Action

获取或设置安全性操作。Gets or sets a security action.

(继承自 SecurityAttribute)
Open

获取或设置一个值,该值指示是否声明了通过文件对话框打开文件的权限。Gets or sets a value indicating whether permission to open files through the file dialog is declared.

Save

获取或设置一个值,该值指示是否声明了通过文件对话框保存文件的权限。Gets or sets a value indicating whether permission to save files through the file dialog is declared.

TypeId

在派生类中实现时,获取此 Attribute 的唯一标识符。When implemented in a derived class, gets a unique identifier for this Attribute.

(继承自 Attribute)
Unrestricted

获取或设置一个值,该值指示是否声明了对受该特性保护的资源有完全(无限制的)权限。Gets or sets a value indicating whether full (unrestricted) permission to the resource protected by the attribute is declared.

(继承自 SecurityAttribute)

方法

CreatePermission()

创建并返回一个新的 FileDialogPermissionCreates and returns a new FileDialogPermission.

Equals(Object)

返回一个值,该值指示此实例是否与指定的对象相等。Returns a value that indicates whether this instance is equal to a specified object.

(继承自 Attribute)
GetHashCode()

返回此实例的哈希代码。Returns the hash code for this instance.

(继承自 Attribute)
GetType()

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

(继承自 Object)
IsDefaultAttribute()

在派生类中重写时,指示此实例的值是否是派生类的默认值。When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.

(继承自 Attribute)
Match(Object)

当在派生类中重写时,返回一个指示此实例是否等于指定对象的值。When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.

(继承自 Attribute)
MemberwiseClone()

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

(继承自 Object)
ToString()

返回一个表示当前对象的 string。Returns a string that represents the current object.

(继承自 Object)

显式界面实现

_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

将一组名称映射为对应的一组调度标识符。Maps a set of names to a corresponding set of dispatch identifiers.

(继承自 Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

检索对象的类型信息,然后可以使用该信息获取接口的类型信息。Retrieves the type information for an object, which can be used to get the type information for an interface.

(继承自 Attribute)
_Attribute.GetTypeInfoCount(UInt32)

检索对象提供的类型信息接口的数量(0 或 1)。Retrieves the number of type information interfaces that an object provides (either 0 or 1).

(继承自 Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

提供对某一对象公开的属性和方法的访问。Provides access to properties and methods exposed by an object.

(继承自 Attribute)

适用于

另请参阅