5. 完整的自定义依赖属性
5.1 定义
/// <summary>/// 标识 Title 依赖属性。/// </summary>public static readonly DependencyProperty TitleProperty =
DependencyProperty.Register("Title", typeof(string), typeof(MyPage), new PropertyMetadata(string.Empty));/// <summary>/// 获取或设置Content的值/// </summary> public object Content{
get { return (object)GetValue(ContentProperty); }
set { SetValue(ContentProperty, value); }}/// <summary>/// 标识 Content 依赖属性。/// </summary>public static readonly DependencyProperty ContentProperty =
DependencyProperty.Register("Content", typeof(object), typeof(MyPage), new PropertyMetadata(null, OnContentChanged));private static void OnContentChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args){
MyPage target = obj as MyPage;
object oldValue = (object)args.OldValue;
object newValue = (object)args.NewValue;
if (oldValue != newValue) target.OnContentChanged(oldValue, newValue);}protected virtual void OnContentChanged(object oldValue, object newValue){}以上代码为一个相对完成的依赖属性例子（还有一些功能比较少用就不写出了），从这段代码可以看出，自定义依赖属性的步骤如下：
