WebPermissionAttribute.Connect 屬性

定義

命名空間:

System.Net

組件:

System.Security.Permissions.dll

取得或設定目前 WebPermissionAttribute 所使用的 URI 連接字串。

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

public string Connect { get; set; }

member this.Connect : string with get, set

Public Property Connect As String

屬性值

String

字串，包含由目前 WebPermissionAttribute 控制的 URI 連接。

例外狀況

ArgumentException

當您嘗試設定此值時，Connect 不是 null。 如果您想指定一個以上的連接 URI，請使用額外的屬性宣告陳述式。

範例

下列範例示範如何使用 WebPermissionAttribute 來指定允許 Connect 的字串。

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.
[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();
}

' 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


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

備註

套 WebPermissionAttribute 用至您的類別時，這個屬性會指定接受哪些 URI 連線，以在類別內使用。 這個屬性是寫入一次。

另請參閱

• 可插式通訊協定簡介