C#绝对路径和相对路径的相互转换

/// 

        /// 绝对路径转相对路径
        /// 
        /// 
        /// 
        private static string urlConvertor(string strUrl)
        {
            string tmpRootDir = HttpContext.Current.Server.MapPath(System.Web.HttpContext.Current.Request.ApplicationPath.ToString());//获取程序根目录
            string urlPath = strUrl.Replace(tmpRootDir, ""); //转换成相对路径
            urlPath = urlPath.Replace(@"/", @"/");
            return urlPath;
        }

        /// 

        /// 相对路径转绝对路径
        /// 
        /// 
        /// 
        private static string urlConvertorLocal(string strUrl)
        {
            string tmpRootDir = HttpContext.Current.Server.MapPath(System.Web.HttpContext.Current.Request.ApplicationPath.ToString());//获取程序根目录
            string urlPath = tmpRootDir + strUrl.Replace(@"/", @"/"); //转换成绝对路径
            return urlPath;
        }