C# 4 and .NET 4

Course order application ❘ 1371
The file Customer.cs includes the class Customer, which includes properties for the company and
contact names:
namespace Wrox.ProCSharp.Messaging
{
public class Customer
{
public string Company { get; set; }
public string Contact { get; set; }
}
}
code snippet CourseOrder/Customer.cs
The class CourseOrder in the file CourseOrder.cs maps a customer and a course inside an order and
defines whether the order is high priority. This class also defines the name of the queue that is set to a
format name of a public queue. The format name is used to send the message, even if the queue cannot be
reached currently. You can get the format name by using the Computer Management snap-in to read the ID
of the message queue. If you don’t have access to an Active Directory to create a public queue, you can easily
change the code to use a private queue.
namespace Wrox.ProCSharp.Messaging
{
public class CourseOrder
{
public const string CourseOrderQueueName =
"FormatName:Public=D99CE5F3-4282-4a97-93EE-E9558B15EB13";
}
}
public Customer Customer { get; set; }
public Course Course { get; set; }
code snippet CourseOrder/CourseOrder.cs
Course order message sender
The second part of the solution is a Windows application called
CourseOrderSender. With this application, course orders are sent
to the message queue. The assemblies System.Messaging and
CourseOrder must be referenced.
The user interface of this application is shown in Figure 46-10. The
items of the combo box comboBoxCourses include several courses
such as Advanced .NET Programming, Programming with LINQ,
and Distributed Application Development using WCF.
When the Submit the Order button is clicked, the handler
method buttonSubmit_Click() is invoked. With this method, a
CourseOrder object is created and filled with the content from the
TextBox and ComboBox controls. Then a MessageQueue instance is
created to open a public queue with a format name. With the Send()
method, the CourseOrder object is passed to serialize it with the
default XmlMessageFormatter and to write it to the queue:
figure 46-10
private void buttonSubmit_Click(object sender, RoutedEventArgs e)
{
try
{
var order = new CourseOrder();
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