이번예제는 소켓을 이용한 MS의 채팅 프로그램의 예제 입니다. 그중 먼저 서버를 만들고 다음 예제에서 클라이언트를 만들도록 하겠습니다. 실행을 위해서는 서버를 먼저 띄워 놓으시고 클라이언트를 실행 하시면 됩니다.
우선 서버의 실행 화면은 다음과 같습니다.
----------------------------
[frmMain.cs]
----------------------------
//Copyright (C) 2002 Microsoft Corporation
//All rights reserved.
//THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
//EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
//MERCHANTIBILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
//Requires the Trial or Release version of Visual Studio .NET Professional (or greater).
using System;
using System.Collections;
using System.Threading;
using System.Windows.Forms;
using System.Net.Sockets;
public class frmMain : System.Windows.Forms.Form
{
#region " Windows Form Designer generated code "
///
/// The main entry point for the application.
///
[STAThread]
static void Main()
{
Application.Run(new frmMain());
}
public frmMain()
{
//This call is required by the Windows Form Designer.
InitializeComponent();
//Add any initialization after the InitializeComponent() call
// So that we only need to set the title of the application once,
// we use the AssemblyInfo class (defined in the AssemblyInfo.cs file)
// to read the AssemblyTitle attribute.
AssemblyInfo ainfo = new AssemblyInfo();
this.Text = ainfo.Title;
this.mnuAbout.Text = string.Format("&About {0} ...", ainfo.Title);
}
//Form overrides dispose to clean up the component list.
protected override void Dispose(bool disposing) {
if (disposing) {
if (components != null) {
components.Dispose();
}
}
base.Dispose(disposing);
}
//Required by the Windows Form Designer
private System.ComponentModel.IContainer components = null;
//NOTE: The following procedure is required by the Windows Form Designer
//It can be modified using the Windows Form Designer.
//Do not modify it using the code editor.
private System.Windows.Forms.MainMenu mnuMain;
private System.Windows.Forms.MenuItem mnuFile;
private System.Windows.Forms.MenuItem mnuExit;
private System.Windows.Forms.MenuItem mnuHelp;
private System.Windows.Forms.MenuItem mnuAbout;
private System.Windows.Forms.ListBox lstStatus;
private System.Windows.Forms.Button btnBroadcast;
private System.Windows.Forms.TextBox txtBroadcast;
private System.Windows.Forms.Label lblInstructions;
private System.Windows.Forms.Label Label1;
private void InitializeComponent() {
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(frmMain));
this.mnuMain = new System.Windows.Forms.MainMenu();
this.mnuFile = new System.Windows.Forms.MenuItem();
this.mnuExit = new System.Windows.Forms.MenuItem();
this.mnuHelp = new System.Windows.Forms.MenuItem();
this.mnuAbout = new System.Windows.Forms.MenuItem();
this.lstStatus = new System.Windows.Forms.ListBox();
this.txtBroadcast = new System.Windows.Forms.TextBox();
this.btnBroadcast = new System.Windows.Forms.Button();
this.lblInstructions = new System.Windows.Forms.Label();
this.Label1 = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// mnuMain
//
this.mnuMain.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.mnuFile,
this.mnuHelp});
this.mnuMain.RightToLeft = ((System.Windows.Forms.RightToLeft)(resources.GetObject("mnuMain.RightToLeft")));
//
// mnuFile
//
this.mnuFile.Enabled = ((bool)(resources.GetObject("mnuFile.Enabled")));
this.mnuFile.Index = 0;
this.mnuFile.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.mnuExit});
this.mnuFile.Shortcut = ((System.Windows.Forms.Shortcut)(resources.GetObject("mnuFile.Shortcut")));
this.mnuFile.ShowShortcut = ((bool)(resources.GetObject("mnuFile.ShowShortcut")));
this.mnuFile.Text = resources.GetString("mnuFile.Text");
this.mnuFile.Visible = ((bool)(resources.GetObject("mnuFile.Visible")));
//
// mnuExit
//
this.mnuExit.Enabled = ((bool)(resources.GetObject("mnuExit.Enabled")));
this.mnuExit.Index = 0;
this.mnuExit.Shortcut = ((System.Windows.Forms.Shortcut)(resources.GetObject("mnuExit.Shortcut")));
this.mnuExit.ShowShortcut = ((bool)(resources.GetObject("mnuExit.ShowShortcut")));
this.mnuExit.Text = resources.GetString("mnuExit.Text");
this.mnuExit.Visible = ((bool)(resources.GetObject("mnuExit.Visible")));
this.mnuExit.Click += new System.EventHandler(this.mnuExit_Click);
//
// mnuHelp
//
this.mnuHelp.Enabled = ((bool)(resources.GetObject("mnuHelp.Enabled")));
this.mnuHelp.Index = 1;
this.mnuHelp.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.mnuAbout});
this.mnuHelp.Shortcut = ((System.Windows.Forms.Shortcut)(resources.GetObject("mnuHelp.Shortcut")));
this.mnuHelp.ShowShortcut = ((bool)(resources.GetObject("mnuHelp.ShowShortcut")));
this.mnuHelp.Text = resources.GetString("mnuHelp.Text");
this.mnuHelp.Visible = ((bool)(resources.GetObject("mnuHelp.Visible")));
//
// mnuAbout
//
this.mnuAbout.Enabled = ((bool)(resources.GetObject("mnuAbout.Enabled")));
this.mnuAbout.Index = 0;
this.mnuAbout.Shortcut = ((System.Windows.Forms.Shortcut)(resources.GetObject("mnuAbout.Shortcut")));
this.mnuAbout.ShowShortcut = ((bool)(resources.GetObject("mnuAbout.ShowShortcut")));
this.mnuAbout.Text = resources.GetString("mnuAbout.Text");
this.mnuAbout.Visible = ((bool)(resources.GetObject("mnuAbout.Visible")));
this.mnuAbout.Click += new System.EventHandler(this.mnuAbout_Click);
//
// lstStatus
//
this.lstStatus.AccessibleDescription = resources.GetString("lstStatus.AccessibleDescription");
this.lstStatus.AccessibleName = resources.GetString("lstStatus.AccessibleName");
this.lstStatus.Anchor = ((System.Windows.Forms.AnchorStyles)(resources.GetObject("lstStatus.Anchor")));
this.lstStatus.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("lstStatus.BackgroundImage")));
this.lstStatus.ColumnWidth = ((int)(resources.GetObject("lstStatus.ColumnWidth")));
this.lstStatus.Dock = ((System.Windows.Forms.DockStyle)(resources.GetObject("lstStatus.Dock")));
this.lstStatus.Enabled = ((bool)(resources.GetObject("lstStatus.Enabled")));
this.lstStatus.Font = ((System.Drawing.Font)(resources.GetObject("lstStatus.Font")));
this.lstStatus.HorizontalExtent = ((int)(resources.GetObject("lstStatus.HorizontalExtent")));
this.lstStatus.HorizontalScrollbar = ((bool)(resources.GetObject("lstStatus.HorizontalScrollbar")));
this.lstStatus.ImeMode = ((System.Windows.Forms.ImeMode)(resources.GetObject("lstStatus.ImeMode")));
this.lstStatus.IntegralHeight = ((bool)(resources.GetObject("lstStatus.IntegralHeight")));
this.lstStatus.ItemHeight = ((int)(resources.GetObject("lstStatus.ItemHeight")));
this.lstStatus.Location = ((System.Drawing.Point)(resources.GetObject("lstStatus.Location")));
this.lstStatus.Name = "lstStatus";
this.lstStatus.RightToLeft = ((System.Windows.Forms.RightToLeft)(resources.GetObject("lstStatus.RightToLeft")));
this.lstStatus.ScrollAlwaysVisible = ((bool)(resources.GetObject("lstStatus.ScrollAlwaysVisible")));
this.lstStatus.Size = ((System.Drawing.Size)(resources.GetObject("lstStatus.Size")));
this.lstStatus.TabIndex = ((int)(resources.GetObject("lstStatus.TabIndex")));
this.lstStatus.Visible = ((bool)(resources.GetObject("lstStatus.Visible")));
//
// txtBroadcast
//
this.txtBroadcast.AccessibleDescription = resources.GetString("txtBroadcast.AccessibleDescription");
this.txtBroadcast.AccessibleName = resources.GetString("txtBroadcast.AccessibleName");
this.txtBroadcast.Anchor = ((System.Windows.Forms.AnchorStyles)(resources.GetObject("txtBroadcast.Anchor")));
this.txtBroadcast.AutoSize = ((bool)(resources.GetObject("txtBroadcast.AutoSize")));
this.txtBroadcast.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("txtBroadcast.BackgroundImage")));
this.txtBroadcast.Dock = ((System.Windows.Forms.DockStyle)(resources.GetObject("txtBroadcast.Dock")));
this.txtBroadcast.Enabled = ((bool)(resources.GetObject("txtBroadcast.Enabled")));
this.txtBroadcast.Font = ((System.Drawing.Font)(resources.GetObject("txtBroadcast.Font")));
this.txtBroadcast.ImeMode = ((System.Windows.Forms.ImeMode)(resources.GetObject("txtBroadcast.ImeMode")));
this.txtBroadcast.Location = ((System.Drawing.Point)(resources.GetObject("txtBroadcast.Location")));
this.txtBroadcast.MaxLength = ((int)(resources.GetObject("txtBroadcast.MaxLength")));
this.txtBroadcast.Multiline = ((bool)(resources.GetObject("txtBroadcast.Multiline")));
this.txtBroadcast.Name = "txtBroadcast";
this.txtBroadcast.PasswordChar = ((char)(resources.GetObject("txtBroadcast.PasswordChar")));
this.txtBroadcast.RightToLeft = ((System.Windows.Forms.RightToLeft)(resources.GetObject("txtBroadcast.RightToLeft")));
this.txtBroadcast.ScrollBars = ((System.Windows.Forms.ScrollBars)(resources.GetObject("txtBroadcast.ScrollBars")));
this.txtBroadcast.Size = ((System.Drawing.Size)(resources.GetObject("txtBroadcast.Size")));
this.txtBroadcast.TabIndex = ((int)(resources.GetObject("txtBroadcast.TabIndex")));
this.txtBroadcast.Text = resources.GetString("txtBroadcast.Text");
this.txtBroadcast.TextAlign = ((System.Windows.Forms.HorizontalAlignment)(resources.GetObject("txtBroadcast.TextAlign")));
this.txtBroadcast.Visible = ((bool)(resources.GetObject("txtBroadcast.Visible")));
this.txtBroadcast.WordWrap = ((bool)(resources.GetObject("txtBroadcast.WordWrap")));
//
// btnBroadcast
//
this.btnBroadcast.AccessibleDescription = resources.GetString("btnBroadcast.AccessibleDescription");
this.btnBroadcast.AccessibleName = resources.GetString("btnBroadcast.AccessibleName");
this.btnBroadcast.Anchor = ((System.Windows.Forms.AnchorStyles)(resources.GetObject("btnBroadcast.Anchor")));
this.btnBroadcast.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("btnBroadcast.BackgroundImage")));
this.btnBroadcast.Dock = ((System.Windows.Forms.DockStyle)(resources.GetObject("btnBroadcast.Dock")));
this.btnBroadcast.Enabled = ((bool)(resources.GetObject("btnBroadcast.Enabled")));
this.btnBroadcast.FlatStyle = ((System.Windows.Forms.FlatStyle)(resources.GetObject("btnBroadcast.FlatStyle")));
this.btnBroadcast.Font = ((System.Drawing.Font)(resources.GetObject("btnBroadcast.Font")));
this.btnBroadcast.Image = ((System.Drawing.Image)(resources.GetObject("btnBroadcast.Image")));
this.btnBroadcast.ImageAlign = ((System.Drawing.ContentAlignment)(resources.GetObject("btnBroadcast.ImageAlign")));
this.btnBroadcast.ImageIndex = ((int)(resources.GetObject("btnBroadcast.ImageIndex")));
this.btnBroadcast.ImeMode = ((System.Windows.Forms.ImeMode)(resources.GetObject("btnBroadcast.ImeMode")));
this.btnBroadcast.Location = ((System.Drawing.Point)(resources.GetObject("btnBroadcast.Location")));
this.btnBroadcast.Name = "btnBroadcast";
this.btnBroadcast.RightToLeft = ((System.Windows.Forms.RightToLeft)(resources.GetObject("btnBroadcast.RightToLeft")));
this.btnBroadcast.Size = ((System.Drawing.Size)(resources.GetObject("btnBroadcast.Size")));
this.btnBroadcast.TabIndex = ((int)(resources.GetObject("btnBroadcast.TabIndex")));
this.btnBroadcast.Text = resources.GetString("btnBroadcast.Text");
this.btnBroadcast.TextAlign = ((System.Drawing.ContentAlignment)(resources.GetObject("btnBroadcast.TextAlign")));
this.btnBroadcast.Visible = ((bool)(resources.GetObject("btnBroadcast.Visible")));
this.btnBroadcast.Click += new System.EventHandler(this.btnBroadcast_Click);
//
// lblInstructions
//
this.lblInstructions.AccessibleDescription = resources.GetString("lblInstructions.AccessibleDescription");
this.lblInstructions.AccessibleName = resources.GetString("lblInstructions.AccessibleName");
this.lblInstructions.Anchor = ((System.Windows.Forms.AnchorStyles)(resources.GetObject("lblInstructions.Anchor")));
this.lblInstructions.AutoSize = ((bool)(resources.GetObject("lblInstructions.AutoSize")));
this.lblInstructions.Dock = ((System.Windows.Forms.DockStyle)(resources.GetObject("lblInstructions.Dock")));
this.lblInstructions.Enabled = ((bool)(resources.GetObject("lblInstructions.Enabled")));
this.lblInstructions.Font = ((System.Drawing.Font)(resources.GetObject("lblInstructions.Font")));
this.lblInstructions.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(0)), ((System.Byte)(0)), ((System.Byte)(192)));
this.lblInstructions.Image = ((System.Drawing.Image)(resources.GetObject("lblInstructions.Image")));
this.lblInstructions.ImageAlign = ((System.Drawing.ContentAlignment)(resources.GetObject("lblInstructions.ImageAlign")));
this.lblInstructions.ImageIndex = ((int)(resources.GetObject("lblInstructions.ImageIndex")));
this.lblInstructions.ImeMode = ((System.Windows.Forms.ImeMode)(resources.GetObject("lblInstructions.ImeMode")));
this.lblInstructions.Location = ((System.Drawing.Point)(resources.GetObject("lblInstructions.Location")));
this.lblInstructions.Name = "lblInstructions";
this.lblInstructions.RightToLeft = ((System.Windows.Forms.RightToLeft)(resources.GetObject("lblInstructions.RightToLeft")));
this.lblInstructions.Size = ((System.Drawing.Size)(resources.GetObject("lblInstructions.Size")));
this.lblInstructions.TabIndex = ((int)(resources.GetObject("lblInstructions.TabIndex")));
this.lblInstructions.Text = resources.GetString("lblInstructions.Text");
this.lblInstructions.TextAlign = ((System.Drawing.ContentAlignment)(resources.GetObject("lblInstructions.TextAlign")));
this.lblInstructions.Visible = ((bool)(resources.GetObject("lblInstructions.Visible")));
//
// Label1
//
this.Label1.AccessibleDescription = resources.GetString("Label1.AccessibleDescription");
this.Label1.AccessibleName = resources.GetString("Label1.AccessibleName");
this.Label1.Anchor = ((System.Windows.Forms.AnchorStyles)(resources.GetObject("Label1.Anchor")));
this.Label1.AutoSize = ((bool)(resources.GetObject("Label1.AutoSize")));
this.Label1.Dock = ((System.Windows.Forms.DockStyle)(resources.GetObject("Label1.Dock")));
this.Label1.Enabled = ((bool)(resources.GetObject("Label1.Enabled")));
this.Label1.Font = ((System.Drawing.Font)(resources.GetObject("Label1.Font")));
this.Label1.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(0)), ((System.Byte)(0)), ((System.Byte)(192)));
this.Label1.Image = ((System.Drawing.Image)(resources.GetObject("Label1.Image")));
this.Label1.ImageAlign = ((System.Drawing.ContentAlignment)(resources.GetObject("Label1.ImageAlign")));
this.Label1.ImageIndex = ((int)(resources.GetObject("Label1.ImageIndex")));
this.Label1.ImeMode = ((System.Windows.Forms.ImeMode)(resources.GetObject("Label1.ImeMode")));
this.Label1.Location = ((System.Drawing.Point)(resources.GetObject("Label1.Location")));
this.Label1.Name = "Label1";
this.Label1.RightToLeft = ((System.Windows.Forms.RightToLeft)(resources.GetObject("Label1.RightToLeft")));
this.Label1.Size = ((System.Drawing.Size)(resources.GetObject("Label1.Size")));
this.Label1.TabIndex = ((int)(resources.GetObject("Label1.TabIndex")));
this.Label1.Text = resources.GetString("Label1.Text");
this.Label1.TextAlign = ((System.Drawing.ContentAlignment)(resources.GetObject("Label1.TextAlign")));
this.Label1.Visible = ((bool)(resources.GetObject("Label1.Visible")));
//
// frmMain
//
this.AccessibleDescription = resources.GetString("$this.AccessibleDescription");
this.AccessibleName = resources.GetString("$this.AccessibleName");
this.AutoScaleBaseSize = ((System.Drawing.Size)(resources.GetObject("$this.AutoScaleBaseSize")));
this.AutoScroll = ((bool)(resources.GetObject("$this.AutoScroll")));
this.AutoScrollMargin = ((System.Drawing.Size)(resources.GetObject("$this.AutoScrollMargin")));
this.AutoScrollMinSize = ((System.Drawing.Size)(resources.GetObject("$this.AutoScrollMinSize")));
this.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("$this.BackgroundImage")));
this.ClientSize = ((System.Drawing.Size)(resources.GetObject("$this.ClientSize")));
this.Controls.Add(this.Label1);
this.Controls.Add(this.lblInstructions);
this.Controls.Add(this.btnBroadcast);
this.Controls.Add(this.txtBroadcast);
this.Controls.Add(this.lstStatus);
this.Enabled = ((bool)(resources.GetObject("$this.Enabled")));
this.Font = ((System.Drawing.Font)(resources.GetObject("$this.Font")));
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
this.ImeMode = ((System.Windows.Forms.ImeMode)(resources.GetObject("$this.ImeMode")));
this.Location = ((System.Drawing.Point)(resources.GetObject("$this.Location")));
this.MaximizeBox = false;
this.MaximumSize = ((System.Drawing.Size)(resources.GetObject("$this.MaximumSize")));
this.Menu = this.mnuMain;
this.MinimumSize = ((System.Drawing.Size)(resources.GetObject("$this.MinimumSize")));
this.Name = "frmMain";
this.RightToLeft = ((System.Windows.Forms.RightToLeft)(resources.GetObject("$this.RightToLeft")));
this.StartPosition = ((System.Windows.Forms.FormStartPosition)(resources.GetObject("$this.StartPosition")));
this.Text = resources.GetString("$this.Text");
this.Closing += new System.ComponentModel.CancelEventHandler(this.frmMain_Closing);
this.Load += new System.EventHandler(this.frmMain_Load);
this.ResumeLayout(false);
}
#endregion
#region " Standard Menu Code "
// This code simply shows the About form.
private void mnuAbout_Click(object sender, System.EventArgs e)
{
// Open the About form in Dialog Mode
frmAbout frm = new frmAbout();
frm.ShowDialog(this);
frm.Dispose();
}
// This code will close the form.
private void mnuExit_Click(object sender, System.EventArgs e)
{
// Close the current form
this.Close();
}
#endregion
const int PORT_NUM = 10000;
private Hashtable clients = new Hashtable();
private TcpListener listener;
private Thread listenerThread;
// This subroutine sends a message to all attached clients
private void Broadcast(string strMessage)
{
UserConnection client;
// All entries in the clients Hashtable are UserConnection so it is possible
// to assign it safely.
foreach(DictionaryEntry entry in clients)
{
client = (UserConnection) entry.Value;
client.SendData(strMessage);
}
}
// This subroutine sends the contents of the Broadcast textbox to all clients, if
// it is not empty, and clears the textbox
private void btnBroadcast_Click(object sender, System.EventArgs e)
{
if (txtBroadcast.Text != "")
{
UpdateStatus("Broadcasting: " + txtBroadcast.Text);
Broadcast("BROAD|" + txtBroadcast.Text);
txtBroadcast.Text = string.Empty;
}
}
// This subroutine checks to see if username already exists in the clients
// Hashtable. if it does, send a REFUSE message, otherwise confirm with a JOIN.
private void ConnectUser(string userName, UserConnection sender)
{
if (clients.Contains(userName))
{
ReplyToSender("REFUSE", sender);
}
else
{
sender.Name = userName;
UpdateStatus(userName + " has joined the chat.");
clients.Add(userName, sender);
// Send a JOIN to sender, and notify all other clients that sender joined
ReplyToSender("JOIN", sender);
SendToClients("CHAT|" + sender.Name + " has joined the chat.", sender);
}
}
// This subroutine notifies other clients that sender left the chat, and removes
// the name from the clients Hashtable
private void DisconnectUser(UserConnection sender)
{
UpdateStatus(sender.Name + " has left the chat.");
SendToClients("CHAT|" + sender.Name + " has left the chat.", sender);
clients.Remove(sender.Name);
}
// This subroutine is used a background listener thread to allow reading incoming
// messages without lagging the user interface.
private void DoListen()
{
try {
// Listen for new connections.
listener = new TcpListener(System.Net.IPAddress.Any, PORT_NUM);
listener.Start();
do
{
// Create a new user connection using TcpClient returned by
// TcpListener.AcceptTcpClient()
UserConnection client = new UserConnection(listener.AcceptTcpClient());
// Create an event handler to allow the UserConnection to communicate
// with the window.
client.LineReceived += new LineReceive(OnLineReceived);
//AddHandler client.LineReceived, AddressOf OnLineReceived;
UpdateStatus("new connection found: waiting for log-in");
}while(true);
}
catch{
}
}
// When the window closes, stop the listener.
private void frmMain_Closing(object sender, System.ComponentModel.CancelEventArgs e) //base.Closing;
{
listener.Stop();
}
// Start the background listener thread.
private void frmMain_Load(object sender, System.EventArgs e)
{
listenerThread = new Thread(new ThreadStart(DoListen));
listenerThread.Start();
UpdateStatus("Listener started");
}
// Concatenate all the client names and send them to the user who requested user list
private void ListUsers(UserConnection sender)
{
UserConnection client;
string strUserList;
UpdateStatus("Sending " + sender.Name + " a list of users online.");
strUserList = "LISTUSERS";
// All entries in the clients Hashtable are UserConnection so it is possible
// to assign it safely.
foreach(DictionaryEntry entry in clients)
{
client = (UserConnection) entry.Value;
strUserList = strUserList + "|" + client.Name;
}
// Send the list to the sender.
ReplyToSender(strUserList, sender);
}
// This is the event handler for the UserConnection when it receives a full line.
// Parse the cammand and parameters and take appropriate action.
private void OnLineReceived(UserConnection sender, string data)
{
string[] dataArray;
// Message parts are divided by "|" Break the string into an array accordingly.
dataArray = data.Split((char) 124);
// dataArray(0) is the command.
switch( dataArray[0])
{
case "CONNECT":
ConnectUser(dataArray[1], sender);
break;
case "CHAT":
SendChat(dataArray[1], sender);
break;
case "DISCONNECT":
DisconnectUser(sender);
break;
case "REQUESTUSERS":
ListUsers(sender);
break;
default:
UpdateStatus("Unknown message:" + data);
break;
}
}
// This subroutine sends a response to the sender.
private void ReplyToSender(string strMessage, UserConnection sender)
{
sender.SendData(strMessage);
}
// Send a chat message to all clients except sender.
private void SendChat(string message, UserConnection sender)
{
UpdateStatus(sender.Name + ": " + message);
SendToClients("CHAT|" + sender.Name + ": " + message, sender);
}
// This subroutine sends a message to all attached clients except the sender.
private void SendToClients(string strMessage, UserConnection sender)
{
UserConnection client;
// All entries in the clients Hashtable are UserConnection so it is possible
// to assign it safely.
foreach(DictionaryEntry entry in clients)
{
client = (UserConnection) entry.Value;
// Exclude the sender.
if (client.Name != sender.Name)
{
client.SendData(strMessage);
}
}
}
// This subroutine adds line to the Status listbox
private void UpdateStatus(string statusMessage)
{
lstStatus.Items.Add(statusMessage);
}
}
--------------------------------
frmAbout.cs
--------------------------------
//Copyright (C) 2002 Microsoft Corporation
//All rights reserved.
//THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
//EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
//MERCHANTIBILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
//Requires the Trial or Release version of Visual Studio .NET Professional (or greater).
using System;
using System.Windows.Forms;
public class frmAbout : System.Windows.Forms.Form
{
#region " Windows Form Designer generated code "
public frmAbout()
{
//This call is required by the Windows Form Designer.
InitializeComponent();
//Add any initialization after the InitializeComponent() call
}
//Form overrides dispose to clean up the component list.
protected override void Dispose(bool disposing) {
if (disposing) {
if (components != null) {
components.Dispose();
}
}
base.Dispose(disposing);
}
//Required by the Windows Form Designer
private System.ComponentModel.IContainer components = null;
//NOTE: The following procedure is required by the Windows Form Designer
//It can be modified using the Windows Form Designer.
//Do not modify it using the code editor.
private System.Windows.Forms.PictureBox pbIcon;
private System.Windows.Forms.Label lblTitle;
private System.Windows.Forms.Label lblVersion;
private System.Windows.Forms.Label lblDescription;
private System.Windows.Forms.Button cmdOK;
private System.Windows.Forms.Label lblCopyright;
private System.Windows.Forms.Label lblCodebase;
private void InitializeComponent() {
this.pbIcon = new System.Windows.Forms.PictureBox();
this.lblTitle = new System.Windows.Forms.Label();
this.lblVersion = new System.Windows.Forms.Label();
this.lblDescription = new System.Windows.Forms.Label();
this.cmdOK = new System.Windows.Forms.Button();
this.lblCopyright = new System.Windows.Forms.Label();
this.lblCodebase = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// pbIcon
//
this.pbIcon.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.pbIcon.ImeMode = System.Windows.Forms.ImeMode.NoControl;
this.pbIcon.Location = new System.Drawing.Point(16, 16);
this.pbIcon.Name = "pbIcon";
this.pbIcon.Size = new System.Drawing.Size(32, 32);
this.pbIcon.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
this.pbIcon.TabIndex = 0;
this.pbIcon.TabStop = false;
//
// lblTitle
//
this.lblTitle.ImeMode = System.Windows.Forms.ImeMode.NoControl;
this.lblTitle.Location = new System.Drawing.Point(72, 16);
this.lblTitle.Name = "lblTitle";
this.lblTitle.Size = new System.Drawing.Size(360, 23);
this.lblTitle.TabIndex = 1;
this.lblTitle.Text = "Application Title";
//
// lblVersion
//
this.lblVersion.ImeMode = System.Windows.Forms.ImeMode.NoControl;
this.lblVersion.Location = new System.Drawing.Point(72, 40);
this.lblVersion.Name = "lblVersion";
this.lblVersion.Size = new System.Drawing.Size(360, 23);
this.lblVersion.TabIndex = 2;
this.lblVersion.Text = "Application Version";
//
// lblDescription
//
this.lblDescription.ImeMode = System.Windows.Forms.ImeMode.NoControl;
this.lblDescription.Location = new System.Drawing.Point(72, 80);
this.lblDescription.Name = "lblDescription";
this.lblDescription.Size = new System.Drawing.Size(360, 46);
this.lblDescription.TabIndex = 3;
this.lblDescription.Text = "Application Description";
//
// cmdOK
//
this.cmdOK.DialogResult = System.Windows.Forms.DialogResult.OK;
this.cmdOK.ImeMode = System.Windows.Forms.ImeMode.NoControl;
this.cmdOK.Location = new System.Drawing.Point(352, 200);
this.cmdOK.Name = "cmdOK";
this.cmdOK.TabIndex = 4;
this.cmdOK.Text = "OK";
//
// lblCopyright
//
this.lblCopyright.ImeMode = System.Windows.Forms.ImeMode.NoControl;
this.lblCopyright.Location = new System.Drawing.Point(72, 56);
this.lblCopyright.Name = "lblCopyright";
this.lblCopyright.Size = new System.Drawing.Size(360, 23);
this.lblCopyright.TabIndex = 5;
this.lblCopyright.Text = "Application Copyright";
//
// lblCodebase
//
this.lblCodebase.ImeMode = System.Windows.Forms.ImeMode.NoControl;
this.lblCodebase.Location = new System.Drawing.Point(72, 128);
this.lblCodebase.Name = "lblCodebase";
this.lblCodebase.Size = new System.Drawing.Size(360, 64);
this.lblCodebase.TabIndex = 6;
this.lblCodebase.Text = "Application Codebase";
//
// frmAbout
//
this.AcceptButton = this.cmdOK;
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.CancelButton = this.cmdOK;
this.ClientSize = new System.Drawing.Size(440, 232);
this.Controls.Add(this.lblCodebase);
this.Controls.Add(this.lblCopyright);
this.Controls.Add(this.cmdOK);
this.Controls.Add(this.lblDescription);
this.Controls.Add(this.lblVersion);
this.Controls.Add(this.lblTitle);
this.Controls.Add(this.pbIcon);
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
this.MaximizeBox = false;
this.MinimizeBox = false;
this.Name = "frmAbout";
this.ShowInTaskbar = false;
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
this.Text = "About ...";
this.Load += new System.EventHandler(this.frmAbout_Load);
this.ResumeLayout(false);
}
#endregion
// Note: Because this form is opened by frmMain using the ShowDialog command, we simply set the
// DialogResult property of cmdOK to OK which causes the form to close when clicked.
private void frmAbout_Load(object sender, System.EventArgs e)
{
try {
// Set this Form's Text + Icon properties by using values from the parent form
this.Text = "About " + this.Owner.Text;
this.Icon = this.Owner.Icon;
// Set this Form's Picture Box's image using the parent's icon
// However, we need to convert it to a Bitmap since the Picture Box Control
// will not accept a raw Icon.
this.pbIcon.Image = this.Owner.Icon.ToBitmap();
// Set the labels identitying the Title, Version, and Description by
// reading Assembly meta-data originally entered in the AssemblyInfo.cs file
// using the AssemblyInfo class defined in the same file
AssemblyInfo ainfo = new AssemblyInfo();
this.lblTitle.Text = ainfo.Title;
this.lblVersion.Text = string.Format("Version {0}", ainfo.Version);
this.lblCopyright.Text = ainfo.Copyright;
this.lblDescription.Text = ainfo.Description;
this.lblCodebase.Text = ainfo.CodeBase;
}
catch(System.Exception exp) {
// This catch will trap any unexpected error.
MessageBox.Show(exp.Message, this.Text, MessageBoxButtons.OK, MessageBoxIcon.Stop);
}
}
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