WebPermissionAttribute.Connect プロパティとは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

WebPermissionAttribute.Connect プロパティ

現在の WebPermissionAttribute で制御される URI 接続文字列を取得または設定します。

名前空間: System.Net
アセンブリ: System (system.dll 内)
構文

Visual Basic (宣言)

Public Property Connect As
 String

Visual Basic (使用法)

Dim instance As WebPermissionAttribute
Dim value As String

value = instance.Connect

instance.Connect = value

public string Connect { get;
 set; }

C++

public:
property String^ Connect {
    String^ get ();
    void set (String^ value);
}

/** @property */
public String get_Connect ()

/** @property */
public void set_Connect (String value)

JScript

public function get Connect
 () : String

public function set Connect
 (value : String)

プロパティ値
現在の WebPermissionAttribute で制御される URI 接続を格納している文字列。

例外

例外の種類	条件
ArgumentException	値を設定しようとしましたが、Connect が null 参照 (Visual Basic では Nothing) ではありません。複数の Connect URI を指定する場合は、追加の属性宣言ステートメントを使用します。

解説

WebPermissionAttribute をクラスに適用するときに、このプロパティは、どの URI 接続がクラス内での使用を承認されるかを指定します。このプロパティは、一度だけ書き込むことができます。

使用例

WebPermissionAttribute を使用して、許容 Connect 文字列を指定する方法を次の例に示します。

Visual Basic

' Set the WebPermissionAttribute  Connect property.
  <WebPermission(SecurityAction.Deny, Connect := "http://www.contoso.com/Private.htm")>
  _
   Public Shared Sub CheckConnectPermission(uriToCheck
 As String)
   Dim permissionToCheck As New
 WebPermission()
   permissionToCheck.AddPermission(NetworkAccess.Connect, uriToCheck)
   permissionToCheck.Demand()
End Sub 'CheckConnectPermission


Public Shared Sub demoDenySite()
   'Pass the security check.
   CheckConnectPermission("http://www.contoso.com/Public.htm")
   Console.WriteLine("Public page has passed Connect permission
 check")
   Try
      'Throw a SecurityException.
      CheckConnectPermission("http://www.contoso.com/Private.htm")
      Console.WriteLine("This line will not be printed")
   Catch e As SecurityException
      Console.WriteLine(("Expected exception" + e.Message))
   End Try
End Sub 'demoDenySite

// Set the WebPermissionAttribute  Connect property.
[WebPermission(SecurityAction.Deny, Connect=@"http://www.contoso.com/Private.htm")]

public static void demoDenySite()
 
{
    //Pass the security check.
    CheckConnectPermission("http://www.contoso.com/Public.htm");
    Console.WriteLine("Public page has passed connect permission check");

    try 
    {
        //Throw a SecurityException.
        CheckConnectPermission("http://www.contoso.com/Private.htm");
        Console.WriteLine("This line will not be printed");
    }
    catch (SecurityException e) {
        Console.WriteLine("Expected exception" + e.Message);
    }

 }

public static void CheckConnectPermission(string
 uriToCheck) {
    WebPermission permissionToCheck = new WebPermission();
    permissionToCheck.AddPermission(NetworkAccess.Connect, uriToCheck);
    permissionToCheck.Demand();
}

C++

public:
   // Set the WebPermissionAttribute  Connect property.
   [method:WebPermission(SecurityAction::Deny,Connect="http://www.contoso.com/Private.htm")]

   static void demoDenySite()
   {
      //Pass the security check.
      CheckConnectPermission( "http://www.contoso.com/Public.htm"
 );
      Console::WriteLine( "Public page has passed connect permission check"
 );

      try
      {
         //Throw a SecurityException.
         CheckConnectPermission( "http://www.contoso.com/Private.htm"
 );
         Console::WriteLine( "This line will not be printed" );
      }
      catch ( SecurityException^ e ) 
      {
         Console::WriteLine( "Expected exception {0}", e->Message );
      }
   }

   static void CheckConnectPermission( String^
 uriToCheck )
   {
      WebPermission^ permissionToCheck = gcnew WebPermission;
      permissionToCheck->AddPermission( NetworkAccess::Connect, uriToCheck );
      permissionToCheck->Demand();
   }

// Set the WebPermissionAttribute  Connect property.
/** @attribute WebPermission(SecurityAction.Deny, Connect = 
    "http://www.contoso.com/Private.htm")
 */
public static void DemoDenySite()
{
    //Pass the security check.
    CheckConnectPermission("http://www.contoso.com/Public.htm");
    Console.WriteLine("Public page has passed connect permission check");

    try {
        //Throw a SecurityException.
        CheckConnectPermission("http://www.contoso.com/Private.htm");
        Console.WriteLine("This line will not be printed");
    }
    catch (SecurityException e) {
        Console.WriteLine("Expected exception" + e.get_Message());
    }
} //DemoDenySite

public static void CheckConnectPermission(String
 uriToCheck)
{
    WebPermission permissionToCheck = new WebPermission();
    permissionToCheck.AddPermission(NetworkAccess.Connect, uriToCheck);
    permissionToCheck.Demand();
} //CheckConnectPermission