1. 程序根目录：
(D:\\...\\WpfApp1\\WpfApp1\\bin\\Debug")
string exePath = Environment.CurrentDirectory;

2. 获取该进程的命令行
(\"D:\\...\\WpfApp1\\WpfApp1\\bin\\Debug\\WpfApp1.exe\" )
string commandLine = Environment.CommandLine;

3. CPU 核数
int cpuCount = Environment.ProcessorCount;

4. 系统目录
(C:\\WINDOWS\\system32)
string systemPath = Environment.SystemDirectory;

5. 计算机启动到现在的毫秒数
int tickCount = Environment.TickCount;