C#獲取當前系統磁盤符、系統目錄、桌面等

1.獲取方式如下

Environment.SpecialFolder中定義了許多常用的目錄

//獲取當前系統磁盤符方法1，返回：C:
string path = Environment.GetEnvironmentVariable("systemdrive");
//獲取當前系統磁盤符方法2,返回：C:
string path = Environment.ExpandEnvironmentVariables("%systemdrive%");
Console.WriteLine(path);
//獲取當前系統目錄
Console.WriteLine("GetFolderPath: {0}",Environment.GetFolderPath(Environment.SpecialFolder.System));
//獲取當前系統桌面
Console.WriteLine("GetFolderPath: {0}", Environment.GetFolderPath(Environment.SpecialFolder.System));