WebPermissionAttribute.Connect 属性

定义

获取或设置当前 WebPermissionAttribute 控制的 URI 连接字符串。

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

属性值

一个字符串,包含当前 WebPermissionAttribute 控制的 URI 连接。

例外

当尝试设置该值时,Connect 不为 null。 如果希望指定多个 Connect URI,请使用附加的特性声明语句。

示例

以下示例演示如何使用 WebPermissionAttribute 指定允许的 Connect 字符串。

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

注解

应用于 WebPermissionAttribute 类时,此属性指定在类中接受的 URI 连接。 此属性为一次写入。

适用于

另请参阅