C#

namespace NetTest
{
    public class RemoteFileBrowser:MarshalByRefObject
    {
        public delegate void EventFireHandler();
        public event EventFireHandler eventFiredFromRemoteObject;

        public RemoteResult GetStream(string path)
        {
            if (!File.Exists(path)) return new RemoteResult();

            return new RemoteResult(new FileStream(path, FileMode.Open));
        }

        public RemoteResult Failed()
        {
            return new RemoteResult();
        }

        public string GetMachineName()
        {
            return Environment.MachineName;
        }

        public string GetAuthor()
        {
            if (this.eventFiredFromRemoteObject != null) this.eventFiredFromRemoteObject();
            return "Hessam Jalali";
        }

    }
}

class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine("Host Started");

        TcpChannel tc = new TcpChannel(50000);
        ChannelServices.RegisterChannel(tc,false);

        RemoteFileBrowser rfb = new RemoteFileBrowser();

        rfb.eventFiredFromRemoteObject += new RemoteFileBrowser.EventFireHandler(rfb_eventFiredFromRemoteObject);
        RemotingConfiguration.RegisterWellKnownServiceType(rfb.GetType(), "rfb.rem", WellKnownObjectMode.Singleton);

        Console.WriteLine();
        Console.WriteLine("Press any key to Exit...");
        Console.ReadKey();

        ChannelServices.UnregisterChannel(tc);

    }

    static void rfb_eventFiredFromRemoteObject()
    {
        Console.WriteLine("Event Fired inside");
    }
}

namespace NetTestClient
{
    static class Program
    {

        static void Main()
        {

            Console.WriteLine("Enter Address");

             string uri=Console.ReadLine();


            #region Remote File Stream
            //string uri = "tcp://localhost:50000/rfb.rem";

            RemoteFileBrowser remoteRfb = RemotingServices.Connect(typeof(RemoteFileBrowser), uri) as RemoteFileBrowser;
(remoteRfb_eventFiredFromRemoteObject);
            Console.WriteLine(remoteRfb.GetAuthor());
            Console.WriteLine("Remote Machine is " + remoteRfb.GetMachineName());


            RemoteResult remoteRes = remoteRfb.GetStream(@"N:\Tools for Linux.iso");

            RemoteResult remoteFailed = remoteRfb.Failed();//just for testing

            Console.WriteLine();
            Console.WriteLine(remoteRes.Message + "  Continue...");
            Console.ReadKey();

            if (remoteRes.Succeed)
                using (StreamReader br = new StreamReader(remoteRes.File))
                {
                    Console.WriteLine();
                    Console.WriteLine("Dumping File");
                    Console.WriteLine();

                    while (!br.EndOfStream)
                        Console.WriteLine(br.ReadLine());
                }
            remoteRes = null;

            #endregion


            Console.ReadKey();
        }
    }
}

hansipet wrote:

do you know if it is possible to deserialize objectes allways from the same stream?

hansipet wrote:

I don't wan't to poll allways the server

falles01 wrote:

hey told me to not worry about sql innjection attacks at the moment because thats not what they are judging me on.

// Get the valid user name and friendly name of the favourite
int uid = this.GetUserID();
string friendlyName = this.GetFriendlyName();
// Create the SQL statement to retrieve the search criteria
string sql = string.Format("SELECT Criteria FROM Favourites "+
"WHERE UserID={0} AND FriendlyName='{1}'",
uid, friendlyName);
SqlCommand cmd = new SqlCommand(sql, this.Connection);
string criteria = cmd.ExecuteScalar();
// Do the search
sql = string.Format("SELECT * FROM Products WHERE ProductName = '{0}'",
criteria);
SqlDataAdapter da = new SqlDataAdapter(sql, this.Connection);
da.Fill(this.productDataSet);

falles01 wrote:

string sql = "select * from employees where employeeID= '" + empNamecomboBox.SelectedValue.ToString() + "' select * from Role where RoleID = '" + rolecomboBox.SelectedValue.ToString() + "')";