C# 4 and .NET 4

674 ❘ ChaPTer 25 windOws services
the Click event assigned to the method OnGetQuote and the TextBox has the x:Name property set to
textQuote.
Server and port information to connect to
the server is configured with settings of the
application. You can add settings with
the Settings tab inside the properties of the
project (see Figure 25-5). Here, you can define
the ServerName and PortNumber settings, and figure 25-5
define some default values. From here, with
the Scope set to User, the settings go into a
user-specific configuration file, and every user of the application can have different settings. This Settings
feature of Visual Studio also creates a Settings class so that the settings can be read and written with a
strongly typed class.
You need to add the following using directives to your code:
using System;
using System.Net.Sockets;
using System.Text;
using System.Windows;
using System.Windows.Input;
code snippet QuoteClient/MainWindow.xaml.cs
The major functionality of the client lies in the handler for the click event of the Get Quote button:
protected void OnGetQuote(object sender, RoutedEventArgs e)
{
const int bufferSize = 1024;
Cursor currentCursor = this.Cursor;
this.Cursor = Cursors.Wait;
string serverName = Properties.Settings.Default.ServerName;
int port = Properties.Settings.Default.PortNumber;
var client = new TcpClient();
NetworkStream stream = null;
try
{
client.Connect(serverName, port);
stream = client.GetStream();
byte[] buffer = new byte[bufferSize];
int received = stream.Read(buffer, 0, bufferSize);
if (received