WPF经典DEMO包含25个实例,由浅入深,主要针对WPF编程的核心概念:数据绑定、依赖属性、数据模板、命令、3D绘制等。-WPF classic demo contains 25 examples,　the shallow to the deep, mainly for WPF programming core concepts: data binding, attribute dependence, data template, command, 3D rendering and so on