/// <summary> /// 单位转换 /// </summary> /// <param name="b">字节</param> /// <returns></returns> public string GetFileSize(double b) { var units = new[] {"", "K", "M", "G", "T" }; var i = 0; while (b >= 1024&&i<4) { b /= 1024.0; i++; } return $"{b:0.00} {units[i]}B"; }