C# 生成随机数

参考链接：

• https://wenku.baidu.com/view/bb85f82f753231126edb6f1aff00bed5b9f37322.html
• https://blog.csdn.net/baobingji/article/details/124361310
• https://blog.csdn.net/qq_43024228/article/details/96475139