Remoting技术初探--实现简单服务器客户机通信

最近因工作需要研究了一下Remoting，因为以前一直在做Delphi开发，没有接触到这块，今天做了个小Demo，算是对Remoting有了一点浅显的认识，现把代码发布出来，希望大家指点。
A建立远程对象：

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.Remoting.Lifetime;

namespace RemotingClass
...{
    public class PublicCls : MarshalByRefObject//一定要继承这个对象
    ...{  
        public string Start;

        //构造
        public PublicCls()
        ...{
            this.Start = "Welcome to Remoting Exemple！";
        }

        //一个计算算法，用于测试
        public int calculate(int nI)
        ...{
            if (nI < 1)
            ...{
                return 0;
            }
            if (nI > 1 && nI <= 2)
            ...{
                return 1;
            }
            else
            ...{
                return calculate(nI - 1) + calculate(nI - 2);
            }
        }
    }
}

B建立服务器程序
 

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.Http;
using System.Runtime.Remoting.Channels.Tcp;
using System.Runtime.Remoting;

namespace RemotingServer
...{
    public partial class FrmServer : Form
    ...{
        public FrmServer()
        ...{
            InitializeComponent();
        }

        private void btn_StartServer_Click(object sender, EventArgs e)
        ...{
            try
            ...{
                RemotingConfiguration.Configure(
                    AppDomain.CurrentDomain.SetupInformation.ConfigurationFile);//读取配置文件内信息
                this.lab_State.Text = "数据服务已开启！";
            }
            catch (Exception ex)
            ...{
                string str = ex.Message;
                this.lab_State.Text = str;
            }
        }
    }
}

服务器端配置文件

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.runtime.remoting>
    <application>
      <server>
        <wellknown  
          mode ="Singleton"
          type ="RemotingClass.PublicCls,RemotingClass"
          objectUri ="publiccls"/>
      </server>
      <channels>
        <channel port="8086" ref="http"/>
      </channels>
      <!--leaseManagerPollTime="7S"-->
      <lifetime
         leaseTime ="7M"
         sponsorshipTimeout="7M"
         renewOnCallTime="7M"/>
    </application>
  </system.runtime.remoting>
</configuration>

C建立客户机程序

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;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;
using System.Runtime.Remoting.Channels.Http;
using RemotingClass;

namespace RemotingClient
...{
    public partial class FrmClient : Form
    ...{
        public FrmClient()
        ...{
            InitializeComponent();
        }

        private PublicCls pcls = new PublicCls();//实例化一个远程对象

        private void FrmClient_Load(object sender, EventArgs e)
        ...{
            RemotingConfiguration.Configure(@"client.exe.config",false);//读取配置文件
            
            if (pcls == null) //如果对象不存在
            ...{
                this.lab_isConncetion.Text = "Cann't conncetion the Server！";
            }
            else ...{
                this.lab_isConncetion.Text = "Conncetioned the Server！";
            }
        }

        private void btn_Cal_Click(object sender, EventArgs e)
        ...{
            try
            ...{
                //使用远程对象进行计算
                int i = pcls.calculate(Convert.ToInt32(this.txt_Num.Text.Trim()));
                this.lab_Cal.Text = i.ToString();
            }
            catch(FormatException ex)
            ...{
                string str = ex.Message;
                this.lab_Cal.Text = "输入的不是数字！";
            }
        }
    }
}

客户机配置文件

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.runtime.remoting>
    <application>
      <client>
        <wellknown type ="RemotingClass.PublicCls,RemotingClass"
                   url ="http://192.168.0.117:8086/publiccls"/>
      </client>
      <channels>
        <channel ref="http" port="0"></channel>
      </channels>
    </application>
  </system.runtime.remoting>
</configuration>