WebPermissionAttribute(SecurityAction) 建構函式

定義

命名空間:

System.Net

組件:

System.Security.Permissions.dll

套件:

System.Security.Permissions v9.0.0-preview.4.24266.19

來源:

WebPermissionAttribute.cs

以指定可以在這個類別上執行的安全性動作的值，初始化 WebPermissionAttribute 類別的新執行個體。

public:
 WebPermissionAttribute(System::Security::Permissions::SecurityAction action);

public WebPermissionAttribute (System.Security.Permissions.SecurityAction action);

new System.Net.WebPermissionAttribute : System.Security.Permissions.SecurityAction -> System.Net.WebPermissionAttribute

Public Sub New (action As SecurityAction)

參數

action

SecurityAction

其中一個 SecurityAction 值。

例外狀況

ArgumentException

action 不是有效的 SecurityAction 值。

範例

下列範例示範如何套用 WebPermissionAttribute 至方法。

public:
   // Set the declarative security for the URI.
   [WebPermission(SecurityAction::Deny,Connect="http://www.contoso.com/")]
   void Connect()
   {
      // Throw an exception.
      try
      {
         HttpWebRequest^ myWebRequest = dynamic_cast<HttpWebRequest^>(WebRequest::Create( "http://www.contoso.com/" ));
      }
      catch ( Exception^ e ) 
      {
         Console::WriteLine( "Exception : {0}", e );
      }

public void Connect() 
{
  // Throw an exception.   
  try
  {
    HttpWebRequest myWebRequest = (HttpWebRequest)WebRequest.Create("http://www.contoso.com/");
  }
  catch(Exception e)
  {
    Console.WriteLine("Exception : " + e.ToString());
  }

  
  ' Set the declarative security for the URI.
  <WebPermission(SecurityAction.Deny, Connect := "http://www.contoso.com/")> _
  Public Sub Connect()
     ' Throw an exception.	 
     Try
        Dim myWebRequest As HttpWebRequest = CType(WebRequest.Create("http://www.contoso.com"), HttpWebRequest)
     Catch e As Exception
        Console.WriteLine(("Exception : " + e.ToString()))
     End Try
  End Sub

備註

SecurityAction傳遞至這個建構函式的值會指定可在此類別上執行的允許安全性動作。