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John Jiang

John Jiang

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Accessing remote SQL server by .net remoting(TCP)

Mar 27 2008 11:45 AM

Accessing remote SQL server by remoting(TCP)

Introduction
In this sample describes how to build a distribution application which accesses MS SqlServer2000 on remoting service.

using the code

Server

using System;
using System.Data;
using System.Data.SqlClient;

namespace www.treaple.com
{
        public class Hello : System.MarshalByRefObject
        {
                public Hello()
                {
                        Console.WriteLine("Hello actived");
                }

                ~Hello()
                {
            Console.WriteLine("Hello destroyed");
                }

                public DataSet GetData()
                {
                        string conn = "Initial Catalog=Northwind;Data Source=localhost;Integrated Security=SSPI";
                    //new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["strconn"]);
                        SqlDataAdapter da=new SqlDataAdapter("select * from Products",conn);
                        DataSet ds=new DataSet();
                        da.Fill(ds);
                        return ds;
                }
        }
}

Client

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

namespace www.treaple.com
{
        public class Client
        {
                [STAThread]
                public static void Main(string [] args)
                {
                        //TcpChannel chan = new TcpChannel();
                        ChannelServices.RegisterChannel(new TcpClientChannel());
                        Hello obj = (Hello)Activator.GetObject(typeof(Hello),"tcp://localhost:8085/Hi");
                        DataTable dt=obj.GetData().Tables[0];
                        foreach(DataRow dr in dt.Rows)
                        {
                                Console.WriteLine(dr["ProductID"]+" "+dr["ProductName"]);
                        }
                        //if (obj == null) System.Console.WriteLine("Could not find server");
                        //else Console.WriteLine(obj.Greeting("kk"));
                        //else Console.WriteLine(obj.HelloMethod("John"));

                }
        }
}
interface:

using System;

namespace www.treaple.com{
    public interface IHello {
        String HelloMethod(String name);
    }

    public class HelloServer : MarshalByRefObject, IHello {
        public HelloServer() {
            Console.WriteLine("HelloServer actived");
        }

        public String HelloMethod(String name) {
            Console.WriteLine("Hello.HelloMethod : {0}", name);
            return "hello," + name;
        }
    }
}
Note:
     If you have any questions about this sample or want to download the source code of  it.please visit

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