C# 4 and .NET 4

1040 ❘ ChaPTer 36 business ApplicAtiOns with wpf
simple object binding
For binding to CLR objects, with the .NET classes you just have to define properties, as shown in the Book
class example and the properties Title, Publisher, Isbn, and Authors. This class is in the Data folder of
the BooksDemo project.
using System.Collections.Generic;
namespace Wrox.ProCSharp.WPF.Data
{
public class Book
{
public Book(string title, string publisher, string isbn,
params string[] authors)
{
this.Title = title;
this.Publisher = publisher;
this.Isbn = isbn;
this.authors.AddRange(authors);
}
public Book()
: this("unknown", "unknown", "unknown")
{
}
public string Title { get; set; }
public string Publisher { get; set; }
public string Isbn { get; set; }
private readonly List authors = new List();
public string[] Authors
{
get
{
return authors.ToArray();
}
}
}
}
public override string ToString()
{
return Title;
}
code snippet BooksDemo/Data/Book.cs
In the XAML code of the user control BookUC, several labels and TextBox controls are defined to display
book information. Using Binding markup extensions, the TextBox controls are bound to the properties
of the Book class. With the Binding markup extension, nothing more than the Path property is defined to
bind it to the property of the Book class. There’s no need to define a source because the source is defined
by assigning the DataContext, as you can see in the code-behind that follows. The mode is defined by its
default with the TextBox element, and this is two-way binding:
code snippet BooksDemo//BookUC.xaml
www.it-ebooks.info