关于不同项目委托的实现

网上百度socket的程序。其中在项目一有一个窗体程序，项目二是一些具体的方法类。现在希望在窗体里面写好函数委托，用来修改一个txtbox里面的值，具体的值在项目二的类里面，然后就希望把委托传过去让项目一类里面动态执行
using SocketLibrary; //项目2
public delegate void ShowSystemLog(string Message);
public ShowSystemLog _ShowSystemLog = null;
public void ShowSystemLogMethod(string Message)
{
try
{
this.txtReceive.Text=Message;
}
catch (Exception ex)
{
throw ex;
}
}
public SocketLibrary.SocketFactory factory = null;
public SocketLibrary.Connection _connection = null;
private void Form1_Load(object sender, EventArgs e) //项目1
{
_ShowSystemLog = new ShowSystemLog(ShowSystemLogMethod);
factory=new SocketFactory();
factory.StartServer(Port1); //想要传一个委托进去
}


public void StartServer(int port) //项目2的SocketFactory类里面的一个StartServer函数
{

TcpListener listener = new TcpListener(IPAddress.Any, port);

listener.Start();

Server server = new Server(listener);

_serverListenThread = new System.Threading.Thread(new System.Threading.ThreadStart(server.Start));

_serverListenThread.Start();

server.StartListen();

}

public void Listenning() //项目2的Server类的监听函数
{

while (true)
{

System.Threading.Thread.Sleep(200);

foreach (Connection connection in this._connections)
{

if (connection.NetworkStream.CanRead && connection.NetworkStream.DataAvailable)
{

byte[] buffer = new byte[1024];

int count = connection.NetworkStream.Read(buffer, 0, buffer.Length);

Console.Write(SocketFactory.DefaultEncoding.GetString(buffer, 0, count)); //原先是输出在控制台的，希望传一个函数进来能修改txtBox的值

}

}

}

}
private System.Threading.Thread _listenningthread;
public void StartListen()
{

_listenningthread = new System.Threading.Thread(new System.Threading.ThreadStart(Listenning));

_listenningthread.Start();

}