(1)WebForm中:
HttpContext.Current.Server.MapPath("~/Files/car/");
(2)Mvc中:
Server.MapPath()
(3)最底层的写法:
String path = AppDomain.CurrentDomain.SetupInformation.ApplicationBase;
path = string.Format(@"{0}DataLog{1}", path, DateTime.Now.ToString("yyyy-MM-dd"));//按时间格式保存日志文件