remoting教学四：remoting的事件

remoting教学四：remoting的事件
    现在，为了更好的表现事件，我们将客户端和服务器都用winform来表现。
    在如下的例子中，将会产生一个服务器端事件和一个客户端事件。
RemoteObject

using System;
using System.Windows.Forms;
using System.Collections;

namespace RemoteObject
{
    public class MyObject : MarshalByRefObject
    {
        private int i = 0;
        public ArrayList totalPersons = new ArrayList();

        public MyObject()
        {
            MessageBox.Show(Application.ProductName + " MyObject is created!");
        }

        public int Add(int a, int b)
        {
            return a + b;
        }

        public int Count()
        {
            return ++i;
        }

        public Person getOnePerson()
        {
            MessageBox.Show(Application.ProductName + " create a person , and return!");
            Person p = new Person();
            totalPersons.Add(p);
            return p;
        }

        public void SaveOnePerson(Person p)
        {
            MessageBox.Show(Application.ProductName + " " +  p.Name + " saved a person!");
        }

        public void DoChange(Person p)
        {
            lock (this)
            {
                MessageBox.Show(Application.ProductName + " do! person name changed to " + p.Name);               
            }
        }
    }
    [Serializable]
    public class Person
    {
        private string name="ddddddfault";
        public delegate void NameOnChangedHandle(Person p);
        public NameOnChangedHandle NameOnChanged;
        public Person()
        {
            MessageBox.Show(Application.ProductName + " create a person !");
        }
        public string Name
        {
            get { return name; }
            set { name = value; NameOnChanged(this); }
        }
    }
 
}

server：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.Remoting.Channels.Tcp;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting;
using System.Collections;
using System.Runtime.Serialization.Formatters;
using RemoteObject;

namespace WinRemoteServer
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            BinaryServerFormatterSinkProvider provider = new BinaryServerFormatterSinkProvider();
            provider.TypeFilterLevel = TypeFilterLevel.Full;
            // Creating the IDictionary to set the port on the channel instance.
            IDictionary props = new Hashtable();
            props["port"] = 9999;
            // Pass the properties for the port setting and the server provider in the server chain argument. (Client remains null here.)
            TcpChannel chan = new TcpChannel(props, null, provider);

            //TcpServerChannel channel = new TcpServerChannel(props,null,provider);
            ChannelServices.RegisterChannel(chan);
            RemotingConfiguration.RegisterWellKnownServiceType(typeof(RemoteObject.MyObject),
               "RemoteObject", WellKnownObjectMode.Singleton);      
      
            
        }

        MyObject ob = null;

        private void button1_Click(object sender, EventArgs e)
        {
            ob = (MyObject)Activator.GetObject(typeof(MyObject),"tcp://localhost:9999/RemoteObject");
            
        }
    }
}

client：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;
using RemoteObject;

namespace WinRemoteClient
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        RemoteObject.MyObject remoteobj = null;
        RemoteObject.Person r = null;

        private void Form1_Load(object sender, EventArgs e)
        {
            ChannelServices.RegisterChannel(new TcpClientChannel());
            remoteobj = (RemoteObject.MyObject)Activator.GetObject(typeof(RemoteObject.MyObject),
                "tcp://localhost:9999/RemoteObject");
            
        }

        //调用Add
        private void button1_Click(object sender, EventArgs e)
        {
            MessageBox.Show(remoteobj.Add(1, 2).ToString());
        }

        //调用Count
        private void button2_Click(object sender, EventArgs e)
        {
            MessageBox.Show(remoteobj.Count().ToString());
        }

        //Create a server person, and saved!
        private void button3_Click(object sender, EventArgs e)
        {
            r = remoteobj.getOnePerson();
            r.NameOnChanged = remoteobj.DoChange;
            remoteobj.SaveOnePerson(r);            
        }

        void r_NameOnChanged(Person p)
        {
            MessageBox.Show(Application.ProductName + " client do! person name changed to " + p.Name );
        }

        //Create a client person, and saved!
        private void button4_Click(object sender, EventArgs e)
        {
            r = new RemoteObject.Person();            
            remoteobj.SaveOnePerson(r);
            r.NameOnChanged = r_NameOnChanged;
        }

        //改变NAME值
        private void button5_Click(object sender, EventArgs e)
        {
            r.Name = textBox1.Text;
        }
    }
}