C#

Natural_Demon wrote:

how do i tell Main() the user past it test or not

Form login = new Login() ;
 
Application.Run ( login ) ;
 
if ( login.Succeeded )
{
    Application.Run ( new Form1 ( login.UserInfo ) ) ;
}

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

namespace Modales_window
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new loginscreen.LoginScreen());
            if (loginscreen.LoginScreen.Succeeded)
            {
                Application.Run(new Form1());
            }
            else
            {
                Application.Exit();
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;

namespace loginscreen
{
    public partial class LoginScreen : Form
    {
        static public bool Succeeded = false;
        public LoginScreen()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Succeeded = true;     
            this.Close();
        }
    }
}

[STAThread]
static void Main()
{
    Application.EnableVisualStyles();
    Application.SetCompatibleTextRenderingDefault(false);

    LoginForm lf = new LoginForm();
    if (lf.ShowDialog() == DialogResult.OK)
    {
        // do stuff to test good login here
        Application.Run(new MainForm());
    }
    else
    {
        Application.Exit();
    }
         }

Natural_Demon wrote:

doesn't work, the class gets disposed after the login screen gets closed

bool loggedIn=false;
using (LoginForm lf=new LoginForm()) loggedIn=lf.ShowDialog()==DialogResult.OK;
if (loggedIn) Application.Run(new MainForm());

MainForm mf=new MainForm();   // constructor can launch thread to perform some harmless work; nothing shows yet.
bool loggedIn=false;
using (LoginForm lf=new LoginForm()) loggedIn=lf.ShowDialog()==DialogResult.OK;
if (loggedIn) Application.Run(mf);  //the implicit mf.Show() will cause Load and Shown events

using System;
using System.Text;
using System.IO;
using System.Net;
using System.Net.Sockets;

public class GetSocket
{
    private static Socket ConnectSocket(string server, int port)
    {
        Socket s = null;
        IPHostEntry hostEntry = null;

        // Get host related information.
        hostEntry = Dns.GetHostEntry(server);

        // Loop through the AddressList to obtain the supported AddressFamily. This is to avoid
        // an exception that occurs when the host IP Address is not compatible with the address family
        // (typical in the IPv6 case).
        foreach(IPAddress address in hostEntry.AddressList)
        {
            IPEndPoint ipe = new IPEndPoint(address, port);
            Socket tempSocket = 
                new Socket(ipe.AddressFamily, SocketType.Stream, ProtocolType.Tcp);

            tempSocket.Connect(ipe);//HERE IS THE PROBLEM

if(tempSocket.Connected)
            {
                s = tempSocket;
                break;
            }
            else
            {
                continue;
            }
        }
        return s;
    }

    // This method requests the home page content for the specified server.
    private static string SocketSendReceive(string server, int port) 
    {
        string request = "GET / HTTP/1.1\r\nHost: " + server + 
            "\r\nConnection: Close\r\n\r\n";
        Byte[] bytesSent = Encoding.ASCII.GetBytes(request);
        Byte[] bytesReceived = new Byte[256];

        // Create a socket connection with the specified server and port.
        Socket s = ConnectSocket(server, port);

        if (s == null)
            return ("Connection failed");

        // Send request to the server.
        s.Send(bytesSent, bytesSent.Length, 0);  

        // Receive the server home page content.
        int bytes = 0;
        string page = "Default HTML page on " + server + ":\r\n";

        // The following will block until te page is transmitted.
        do {
            bytes = s.Receive(bytesReceived, bytesReceived.Length, 0);
            page = page + Encoding.ASCII.GetString(bytesReceived, 0, bytes);
        }
        while (bytes > 0);

        return page;
    }

    public static void Main(string[] args) 
    {
        string host;
        int port = 80;

        if (args.Length == 0)
            // If no server name is passed as argument to this program, 
            // use the current host name as the default.
            host = Dns.GetHostName();
        else
            host = args[0];

        string result = SocketSendReceive(host, port); 
        Console.WriteLine(result);
        Console.Read();

    }
}

Richard MacCutchan wrote:

btw this is really a TCP/IP issue and not C#.

Richard MacCutchan wrote:

I have no port 80 listener on that system either.