C# winform各种路径

https://blog.csdn.net/Lu1030017255/article/details/122535726
https://wenku.baidu.com/view/6b92f8f687254b35eefdc8d376eeaeaad1f31692.html
https://blog.csdn.net/qq_37192571/article/details/117925596
http://t.zoukankan.com/yuwentao-p-4664686.html