WebPermissionAttribute 类

定义

public ref class WebPermissionAttribute sealed : System::Security::Permissions::CodeAccessSecurityAttribute

[System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true, Inherited=false)]
[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 WebPermissionAttribute : System.Security.Permissions.CodeAccessSecurityAttribute

[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 WebPermissionAttribute : System.Security.Permissions.CodeAccessSecurityAttribute

[System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true, Inherited=false)]
public sealed class WebPermissionAttribute : System.Security.Permissions.CodeAccessSecurityAttribute

[<System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true, Inherited=false)>]
[<System.Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
type WebPermissionAttribute = class
    inherit CodeAccessSecurityAttribute

[<System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true, Inherited=false)>]
[<System.Serializable>]
type WebPermissionAttribute = class
    inherit CodeAccessSecurityAttribute

[<System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true, Inherited=false)>]
type WebPermissionAttribute = class
    inherit CodeAccessSecurityAttribute

Public NotInheritable Class WebPermissionAttribute
Inherits CodeAccessSecurityAttribute

继承

Object

Attribute

SecurityAttribute

CodeAccessSecurityAttribute

WebPermissionAttribute

属性

AttributeUsageAttribute ObsoleteAttribute SerializableAttribute

示例

以下示例演示如何应用于 WebPermissionAttribute 方法。

public:
   // Deny access to a specific resource by setting the ConnectPattern property.
   [method:WebPermission(SecurityAction::Deny,ConnectPattern="http://www.contoso.com/")]

   void Connect()
   {
      // Create a Connection.
      HttpWebRequest^ myWebRequest = (HttpWebRequest^)(WebRequest::Create( "http://www.contoso.com" ));
      Console::WriteLine( "This line should never be printed" );
   }

    // Deny access to a specific resource by setting the ConnectPattern property. 
   [WebPermission(SecurityAction.Deny, ConnectPattern=@"http://www\.contoso\.com/")]

public void Connect() 
     {
        // Create a Connection.  
        HttpWebRequest myWebRequest = (HttpWebRequest)WebRequest.Create("http://www.contoso.com");
        Console.WriteLine("This line should never be printed");
     }

' Deny access to a specific resource by setting the ConnectPattern property. 
<WebPermission(SecurityAction.Deny, ConnectPattern := "http://www\.contoso\.com/.*")> Public Sub Connect()

' Create a Connection.	 
Dim myWebRequest As HttpWebRequest = CType(WebRequest.Create("http://www.contoso.com"), HttpWebRequest)
Console.WriteLine("This line should never be printed")

注解

WebPermissionAttribute 允许以声明方式指定类可以使用的 URI 字符串和正则表达式字符串。

中指定的 WebPermissionAttribute 安全信息存储在属性目标的元数据中，该元数据是应用的类 WebPermissionAttribute 。 系统在运行时访问此信息。 System.Security.Permissions.SecurityAction传递给构造函数的 确定允许WebPermissionAttribute的目标。 系统使用 WebPermission 方法返回的 CreatePermission 将属性目标的安全信息转换为存储在元数据中的可序列化形式。

构造函数

属性

方法

显式接口实现

适用于