3.2.1 @H_403_5@依赖属性的实现@H_403_5@

通过不同的@H_403_5@ Register @H_403_5@方法重载，可以传入@H_403_5@ Metadata (@H_403_5@元数据@H_403_5@) @H_403_5@说明：@H_403_5@

例如：

@H_403_5@public class Button : ButtonBase@H_403_5@

@H_403_5@{@H_403_5@

@H_403_5@// @H_403_5@依赖属性@H_403_5@

@H_403_5@public static readonly DependencyProperty IsDefaultProperty;@H_403_5@

@H_403_5@static Button()@H_403_5@

@H_403_5@{@H_403_5@

@H_403_5@// @H_403_5@注册属性@H_403_5@

@H_403_5@Button.IsDefaultProperty =@H_403_5@

DependencyProperty.Register(@H_403_5@

"IsDefault",@H_403_5@

typeof(bool),@H_403_5@

typeof(Button),@H_403_5@

new FrameworkPropertyMetadata(@H_403_5@

false,@H_403_5@

new PropertyChangedCallback(Button.OnIsDefaultChanged)));@H_403_5@

@H_403_5@}@H_403_5@

@H_403_5@// .NET@H_403_5@属性包装器（可选）@H_403_5@

@H_403_5@public bool IsDefault@H_403_5@

@H_403_5@{@H_403_5@

@H_403_5@get@H_403_5@

@H_403_5@{@H_403_5@

@H_403_5@return (bool)this.GetValue(Button.IsDefaultProperty);@H_403_5@

@H_403_5@}@H_403_5@

@H_403_5@set@H_403_5@

@H_403_5@{@H_403_5@

@H_403_5@this.SetValue(Button.IsDefaultProperty,value);@H_403_5@

@H_403_5@}@H_403_5@

@H_403_5@}@H_403_5@

@H_403_5@// @H_403_5@属性改变的回调（可选）@H_403_5@

@H_403_5@private static void OnIsDefaultChanged(@H_403_5@

DependencyObject o,@H_403_5@

DependencyPropertyChangedEventArgs e)@H_403_5@

@H_403_5@{@H_403_5@

@H_403_5@}@H_403_5@

}@H_403_5@