WebPermissionAttribute.Connect 属性

定义

获取或设置当前 WebPermissionAttribute 控制的 URI 连接字符串。Gets or sets the URI connection string controlled by the current WebPermissionAttribute.

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。A string containing the URI connection controlled by the current WebPermissionAttribute.

例外

当尝试设置该值时,Connect 不为 nullConnect is not null when you attempt to set the value. 如果希望指定多个 Connect URI,请使用附加的特性声明语句。If you wish to specify more than one Connect URI, use an additional attribute declaration statement.

示例

下面的示例演示如何使用 WebPermissionAttribute 指定允许的 Connect 字符串。The following example demonstrates how to use WebPermissionAttribute to specify an allowable Connect string.

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

当应用 WebPermissionAttribute 于类时,此属性指定接受哪个 URI 连接才能在类中使用。When applying WebPermissionAttribute to your class, this property specifies what URI connection is accepted for use within your class. 此属性为写入一次。This property is write-once.

适用于