继承问题基础与子级

Posted 2023-03-31

【中文标题】继承问题基础与子级

【英文标题】：Inheritance issue base vs child

【发布时间】：2014-12-26 23:04:55

【问题描述】：

我写一个套接字服务器类其他类将来自 P>导出

当我从这个类派生，试图使一个网络服务器，基础类事件在那里。 我不希望他们看到在另一个班，从网络服务器，也没有使用Web服务器类最终用户获得。我会以某种方式能够隐藏他们进一步使用，但仍然可以进行订阅。因为在我的头在这一点的唯一方法是重新发明***的类，从我的基地导出！ P>

下面如下的基类的一些代码：

    public delegate void ConnectionRequest (CoreAsyncSocketObj client);
    public delegate void DataReceived (CoreAsyncSocketObj client, string data);
    public delegate void DataSent (CoreAsyncSocketObj client);
    public delegate void ConnectionClose (CoreAsyncSocketObj client);
    public delegate void ServerFull (CoreAsyncSocketObj client);

    /// <summary>
    /// Occurs when a client connects to server.
    /// </summary>
    public event ConnectionRequest OnConnectionRequest;
    /// <summary>
    /// Occurs when server receives data from any client.
    /// </summary>
    public event DataReceived OnDataReceived;
    /// <summary>
    /// Occurs when data has been sent to client.
    /// </summary>
    public event DataSent OnDataSent;
    /// <summary>
    /// Occurs when client has closed its connection.
    /// </summary>
    public event ConnectionClose OnConnectionClose;
    /// <summary>
    /// Occurs when server is full according to the MaximumUsers property.
    /// </summary>
    public event ServerFull OnServerFull;

以上是我怎么有我的委托和事件！ 真正的问题是在我的委托回调，在那里我把这些事件 P>

    void Receive (IAsyncResult ar)
    
        CoreAsyncSocketObj client = (CoreAsyncSocketObj)ar.AsyncState;
        string data = string.Empty;
        try
        
            int bytesReceived = client.sock.EndReceive (ar);
            if (bytesReceived > 0) // client is connected
            
                if (this.protocolEOL == string.Empty) // If no delimeter then just raise event and restart receiving.
                
                    if (this.OnDataReceived != null) 
                    
                        data = Encoding.GetEncoding((int)this.encoder).GetString(client.buffer);
                        this.OnDataReceived (client, data);
                        client.sock.BeginReceive (client.buffer, 0, client.buffer.Length, SocketFlags.None,
                                                new AsyncCallback (Receive), client);
                    
                 
                else // A specified delimter (EOL).
                
                    // Append to a second buffer using the specified encoding.
                    // Check the end of the buffer if it matches the EOL.
                    client.stringBuffer.Append(Encoding.GetEncoding((int)this.encoder).GetString(client.buffer));
                    //client.stringBuffer.Append (Encoding.Default.GetString (client.buffer));
                    data = client.stringBuffer.ToString ();
                    if (data.EndsWith (this.protocolEOL) == true) 
                    
                        if (this.OnDataReceived != null)
                            this.OnDataReceived (client, data);

                        client.stringBuffer.Clear(); // Clear buffer
                    
                    client.sock.BeginReceive (client.buffer, 0, client.buffer.Length, SocketFlags.None,
                                              new AsyncCallback (Receive), client);  // restart
                
             
            else // Client has closed its connection
            
                this.DisconnectClient(client);
                if (this.OnConnectionClose != null)
                    this.OnConnectionClose(client);
            
        
        catch(SocketException exception)
        
            Logger.Write(exception.Message + "\"" + exception.ErrorCode.ToString() + "\"");
        
        catch(ObjectDisposedException exception)
        
            Logger.Write(exception.Message);
        
        catch(Exception exception)
        
            Logger.Write(exception.Message);
        
    

如果我不能订阅DataReceived事件在我的其他类导出这个类，那么我能做些实际的核心是什么？我的头碰了壁。也许从一开始一个坏结构？ P>

【问题讨论】：

如果你想在导出 I>类拥有的唯一通道，使用protected访问修饰符。否则，我不知道你想要完成的任务。 SPAN>

【参考方案1】：

我不相信有办法完全隐藏继承的成员。来自类似问题“Hiding inherited members”的一个建议是覆盖它们，将它们标记为过时，并将DesignerSerializationVisibility 设置为隐藏。

如果您只想在程序集中使用这些成员但将它们隐藏到外部程序集中，请将它们标记为 internal 而不是 public。

如果您真的想隐藏它们，您可以将您的 Web 服务器类编写为包装器而不是子类。在内部使用套接字服务器类并订阅事件。