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KryziK
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 Posted: Sun Jun 20, 2010 6:03 pm Post subject: Help with C# Windows Form App |
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Hi,
I have a Windows Form Application created in Visual Studio 2008.
I need to figure out how to create a main loop while this GUI is showing.
For example, I have a chat client server, and when I press my "Start Server" button, I want a loop to run for as long as the server is running. This loop would then handle all packets and such.
I have heard of timers, but I wanted to know if there is another way, because I don't know how long these actions will take to complete, and I want the program to run as fast as possible, without commands backing up or anything.
Thanks! |
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HolyBlah
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| Posted: Sun Jun 20, 2010 6:25 pm Post subject: |
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| create a new thread for the packets handling. |
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KryziK
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| Posted: Sun Jun 20, 2010 6:28 pm Post subject: |
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Could you provide an example? I'm looking at some tutorials and I'm not sure I understand. I do however, know what threads are, as well as what multi-threading is, so no need to explain that.
Where should I create the thread? In the .cs file that creates my forms?
How do I create it?
P.S. I'm pretty new to c#. I'm trying the best I can to learn, but reading documentation isn't enough at the moment.  |
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atom0s
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| Posted: Mon Jun 21, 2010 3:47 pm Post subject: |
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Since you even stated you are new to the language, you might want to slow down and actually learn the basics before jumping into threading and networking. There are tons of examples on the net for threading in C# as well, Google is your friend.
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Deltron Z
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| Posted: Mon Jun 21, 2010 9:09 pm Post subject: |
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| Wiccaan wrote: | | Since you even stated you are new to the language, you might want to slow down and actually learn the basics before jumping into threading and networking. There are tons of examples on the net for threading in C# as well, Google is your friend. |
I agree. I assume the loops are needed to receive packets and such, and if this is the case I would recommend Asynchronous Sockets when needed or helpful. |
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KryziK
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| Posted: Wed Jun 23, 2010 12:30 pm Post subject: |
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Solved:
| Code: |
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Threading;
namespace Server
{
public partial class Server : Form
{
bool running = false;
public Server()
{
InitializeComponent();
}
private void hStart_Click(object sender, EventArgs e)
{
running = true;
ThreadStart MainLoop = new ThreadStart(MainThread);
Thread Thread = new Thread(MainLoop);
Thread.IsBackground = true;
Thread.Start();
}
private void hStop_Click(object sender, EventArgs e)
{
running = false;
}
public void MainThread()
{
while (running == true)
{
Thread.Sleep(100);
}
}
}
}
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And I figured I could handle it because I'm not new to programming, just threads. I have every single bit of TCP done. Just needed to know the structure to put it in a thread.  |
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Flyte
Peanuts!!!!
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Posts: 1887
Location: Canada
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| Posted: Wed Jun 23, 2010 1:20 pm Post subject: |
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| darkjohn20 wrote: | | And I figured I could handle it because I'm not new to programming, just threads. I have every single bit of TCP done. Just needed to know the structure to put it in a thread. |
No. Go write the following on the board 20 times:
I will not use blocking sockets in a server application. |
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KryziK
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| Posted: Wed Jun 23, 2010 1:24 pm Post subject: |
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| Does an internally-threaded tcp/udp dll count? |
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Flyte
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| Posted: Thu Jun 24, 2010 5:28 pm Post subject: |
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| darkjohn20 wrote: | | Does an internally-threaded tcp/udp dll count? |
You do not want a new thread for every connection. Threads are not cheap. What you want to use for a server is asynchronous sockets (or I/O Completion Ports for very heavy loads). |
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KryziK
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| Posted: Thu Jun 24, 2010 7:02 pm Post subject: |
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| I do not believe it is a new thread for every connection, and I agree. I know enough about threads to know you only want a few. |
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Flyte
Peanuts!!!!
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Posts: 1887
Location: Canada
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| Posted: Thu Jun 24, 2010 8:02 pm Post subject: |
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| darkjohn20 wrote: | | I do not believe it is a new thread for every connection, and I agree. I know enough about threads to know you only want a few. |
Post your code. Your sample above strongly suggests you are creating a thread for every connection. |
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KryziK
Expert Cheater
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Joined: 16 Aug 2009
Posts: 199
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| Posted: Thu Jun 24, 2010 8:10 pm Post subject: |
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| Code: | using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Threading;
namespace Server
{
public partial class test : Form
{
bool running = false;
public test()
{
InitializeComponent();
}
private void hStartServer_Click(object sender, EventArgs e)
{
int Instances = 1;
int Threads = 0;
ushort Local_Port = Convert.ToUInt16(hPort.Text);
string Local_IP = hIPAddress.Text.ToString();
Global.Max_Clients = Convert.ToInt32(hMaxConnections.Text);
Global.SendPacket = mn.CreatePacket();
Global.RecvPacket = mn.CreatePacket();
mn.SetMemorySize(Global.SendPacket, 1024);
mn.Start(Instances, Threads);
mn.SetLocal(0, Local_IP, Local_Port, Local_IP, Local_Port);
mn.DisableUDP(0);
int Result = mn.StartServer(0, Global.Max_Clients, 0, 0);
if (Result == 0)
{
hStatus.Text = "Online";
hStartServer.Enabled = false;
hStopServer.Enabled = true;
hIPAddress.ReadOnly = true;
hPort.ReadOnly = true;
hMaxConnections.ReadOnly = true;
hStopServer.Focus();
ThreadStart MainLoop = new ThreadStart(MainThread);
Thread Thread = new Thread(MainLoop);
Thread.IsBackground = true;
Thread.Start();
running = true;
}
else
{
mn.Finish(-1);
}
}
private void hStopServer_Click(object sender, EventArgs e)
{
running = false;
hStatus.Text = "Offline";
hStartServer.Enabled = true;
hStopServer.Enabled = false;
hIPAddress.ReadOnly = false;
hPort.ReadOnly = false;
hMaxConnections.ReadOnly = false;
hStartServer.Focus();
}
public void MainThread()
{
while (running == true)
{
//Check for joining or leaving clients, and new packets
Thread.Sleep(100);
}
mn.Finish(-1);
}
public void _TCPSendString(int Instance, int ClientID, string Data)
{
mn.AddString(Global.SendPacket, Data, 0, true);
mn.SendTCP(Instance, Global.SendPacket, ClientID, false, true);
}
public void _TCPSendInt(int Instance, int ClientID, int Data)
{
mn.AddInt(Global.SendPacket, Data);
mn.SendTCP(Instance, Global.SendPacket, ClientID, false, true);
}
}
} |
Does
| Code: | ThreadStart MainLoop = new ThreadStart(MainThread);
Thread Thread = new Thread(MainLoop);
Thread.IsBackground = true;
Thread.Start(); |
need to be moved so it isn't created every time I press "Start Server"?
Edit: Using library found at: DarkNet |
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Flyte
Peanuts!!!!
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Joined: 19 Apr 2006
Posts: 1887
Location: Canada
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| Posted: Fri Jun 25, 2010 12:07 am Post subject: |
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| Don't use that library, at first glance it appears to be complete shit. Do it yourself with .NET asynchronous sockets. |
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tombana
Master Cheater
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Posts: 456
Location: The Netherlands
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| Posted: Fri Jun 25, 2010 4:06 am Post subject: |
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| Flyte wrote: | | Don't use that library, at first glance it appears to be complete shit. Do it yourself with .NET asynchronous sockets. |
Could you explain why DarkNet looks like shit? I've been looking for network libraries recently and chose ACE, but since I'm not an expert on this, I can't tell why this 'DarkNet' would be bad. |
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Flyte
Peanuts!!!!
Reputation: 6
Joined: 19 Apr 2006
Posts: 1887
Location: Canada
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| Posted: Fri Jun 25, 2010 12:06 pm Post subject: |
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| tombana wrote: | | Could you explain why DarkNet looks like shit? I've been looking for network libraries recently and chose ACE, but since I'm not an expert on this, I can't tell why this 'DarkNet' would be bad. |
It seems to lack any sort of design. This is evident by the naming conventions, the use of arbitrary integer values, and the fact there is a sound library bundled with a networking library.
The vast majority of networking in .NET can be done with TcpClient and TcpListener. It isn't often you'll need any more than that. |
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