public PostViewModel(Post post)
{
internal_post = post;
// Forward all notifications from internal object
internal_post.PropertyChanged += (sender, args) => NotifyPropertyChanged(args.PropertyName);
// Add an existing property
var property = internal_post.GetType().GetProperty("Text");
custom_type.AddProperty(new CustomPropertyInfo(internal_post, property));
// Add dependency
internal_post.PropertyChanged += (sender, args) =>
{
if (args.PropertyName == "Text")
NotifyPropertyChanged("ModifiedText");
};
// Create and add a new property
//var expr_property = new ExpressionPropertyInfo<Post, string>("ModifiedText");
//expr_property.internal_object = internal_post;
//Expression<Func<Post, string>> expr = (p) => p.Text + " modified";
//expr_property.GetFunc = expr.Compile();
//custom_type.AddProperty(expr_property);
var expr_property = new ExpressionPropertyInfo<string>("ModifiedText");
Expression<Func<string>> expr = () => internal_post.Text + " modified";
expr_property.GetFunc = expr.Compile();
custom_type.AddProperty(expr_property);
}
public MainWindow()
{
InitializeComponent();
m = new Post();
vm = new PostViewModel(m);
DataContext = vm;
}