WebPermissionAttribute.ConnectPattern Properti

Definisi

Ruang nama:

System.Net

Rakitan:

System.Security.Permissions.dll

Paket:

System.Security.Permissions v9.0.0-preview.5.24306.7

Sumber:

WebPermissionAttribute.cs

Mendapatkan atau mengatur pola ekspresi reguler yang menjelaskan koneksi URI yang dikontrol oleh saat ini WebPermissionAttribute.

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

public string ConnectPattern { get; set; }

member this.ConnectPattern : string with get, set

Public Property ConnectPattern As String

Nilai Properti

String

String yang berisi pola ekspresi reguler yang menjelaskan koneksi URI yang dikontrol oleh ini WebPermissionAttribute.

Pengecualian

ArgumentException

ConnectPattern bukan null ketika Anda mencoba untuk mengatur nilai. Jika Anda ingin menentukan lebih dari satu URI koneksi, gunakan pernyataan deklarasi atribut tambahan.

Contoh

Contoh berikut menunjukkan cara menggunakan WebPermissionAttribute untuk menentukan yang diizinkan ConnectPattern.

public:
   // Set the WebPermissionAttribute ConnectPattern property.
   [WebPermission(SecurityAction::Deny,ConnectPattern="http://www\\.contoso\\.com/Private/.*")]

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

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

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

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

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

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

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

  ' Set the WebPermissionAttribute  ConnectPattern property.
<WebPermission(SecurityAction.Deny, ConnectPattern := "http://www\.contoso\.com/Private/.*")> _
    Public Shared Sub CheckConnectPermission(uriToCheck As String)
     Dim re As New Regex("http://www\.contoso\.com/Public/.*")
     Dim con As New WebPermission(NetworkAccess.Connect, re)
     con.Assert()
     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/page.htm")
     Console.WriteLine("Public page has passed Connect permission check")
     
     Try
        'Throw a SecurityException.
        CheckConnectPermission("http://www.contoso.com/Private/page.htm")
        Console.WriteLine("This line will not be printed")
     Catch e As SecurityException
        Console.WriteLine(("Expected exception" + e.Message))
     End Try
  End Sub

Keterangan

Saat menerapkan WebPermissionAttribute ke kelas Anda, properti ini menentukan string koneksi ekspresi reguler apa yang diterima untuk digunakan dalam kelas Anda. Properti ini bersifat write-once.

Lihat juga

• Bahasa Regex - Referensi Singkat