C#获取当前系统磁盘符、系统目录、桌面等

//获取当前系统磁盘符方法1，返回：C:
string path = Environment.GetEnvironmentVariable("systemdrive");
//获取当前系统磁盘符方法2,返回：C:
string path = Environment.ExpandEnvironmentVariables("%systemdrive%");
Console.WriteLine(path);
//获取当前系统目录
Console.WriteLine("GetFolderPath: {0}",Environment.GetFolderPath(Environment.SpecialFolder.System));
//获取当前系统桌面
Console.WriteLine("GetFolderPath: {0}", Environment.GetFolderPath(Environment.SpecialFolder.System));