c# 如何获得当前绝对路径

        /// <summary>
        /// 获得当前绝对路径
        /// </summary>
        /// <param name="strPath">指定的路径</param>
        /// <returns>绝对路径</returns>
        public static string GetMapPath(string strPath)
        {
            if (strPath.ToLower().StartsWith("http://"))
            {
                return strPath;
            }
            if (HttpContext.Current != null)
            {
                string path = HttpContext.Current.Server.MapPath("~/" + strPath);
                return path;
            }
            else //非web程序引用
            {
                strPath = strPath.Replace("/", "\");
                if (strPath.StartsWith("\"))
                {
                    strPath = strPath.Substring(strPath.IndexOf('\', 1)).TrimStart('\');
                }
                return System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, strPath);
            }
        }