WPF 布局
WPF 布局
参考:https://www.cnblogs.com/tommy-huang/p/4609646.html
https://www.cnblogs.com/niyw/archive/2010/10/31/1863908.html
WPF 实现阴影效果
https://blog.csdn.net/zxlstudio/article/details/9259557
XAML 与 C# 对比
https://www.cnblogs.com/KnightsWarrior/archive/2010/08/02/1790131.html