private void openChatBoxPanel_Click_1(object sender, EventArgs e)
{
openChatAlertPanel.Visible = false;
openChatBoxPanel.Visible = false;
writeAllMessages();
chatPanel.Visible = true;
chatPanel.BringToFront();
}
// Method: StartServer_Click()
// Description: This method takes the port from the interface, validates it
// and once validated, it fire ups the server and send user to
// chat screen.
private void StartServer_Click(object sender, EventArgs e)
{
// application is running server, update the variable to let other methods know
ServerItIs = true;
// get port from interface and clear the textbox
string portString = ServerPort.Text;
ServerPort.Clear();
bool valid = false;
// validate port
int temp = 0;
int.TryParse(portString, out temp);
if (temp > 0)
{
valid = true;
}
// start server if port is valid
if (valid)
{
Int32 port = Int32.Parse(portString);
IPAddress ip = IPAddress.Parse("127.0.0.1");
try
{
server = new TcpListener(ip, port);
// start server
server.Start();
// bring chat panel to front
ChatPanel.BringToFront();
TypeBox.Focus();
// update textbox at the top with IP address and port
ConnectionInfo.Text = "IP: " + GetLocalIPAddress() + " Port: " + port;
// start thread to handle the client
ThreadPool.QueueUserWorkItem(HandleClient);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString());
}
}
else
{
MessageBox.Show("Port cannot be alphabet, special character or negative number." +
"Please try again");
}
}
// Method: StartClient_Click()
// Description: This method takes the IP and port from the interface, validates it
// and once validated, it tries to connect to server, once connected,
// send user to chat screen.
private void StartClient_Click(object sender, EventArgs e)
{
bool valid = false;
IPAddress ip;
int port = 0;
// validate ip and port
if (IPAddress.TryParse(ipbox.Text, out ip) && int.TryParse(clientport.Text, out port))
{
if (port > 0)
{
valid = true;
}
}
// initialise client and connect to server if valid
if (valid)
{
RunTheClient = new TcpClient();
try
{
// connect to server
RunTheClient.Connect(ip, port);
if (RunTheClient.Connected)
{
ChatPanel.BringToFront();
ConnectionInfo.Text = "Connected to server " + ip.ToString() + " at port " + port;
TypeBox.Focus();
// start thread to receive messages from server
ThreadPool.QueueUserWorkItem(HandleServer);
}
}
// connection refused
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString());
}
}
else
{
MessageBox.Show("Invalid entry. Please try again.");
}
}