WebPermissionAttribute.Connect 属性

定义

命名空间:

System.Net

程序集:

System.Security.Permissions.dll

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

String

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

例外

ArgumentException

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。

另请参阅

• 可插入协议简介