Unity C#根据路径读取图片并转换成byte

/// <summary>        /// 根据路径读取图片并转换成byte        /// </summary>        /// <param name="path"></param>        /// <returns></returns>        public static byte[] ReadPNG(string path)        {            FileStream fileStream = new FileStream(path, FileMode.Open, System.IO.FileAccess.Read);            fileStream.Seek(0, SeekOrigin.Begin);            byte[] binary = new byte[fileStream.Length]; //创建文件长度的buffer             fileStream.Read(binary, 0, (int)fileStream.Length);            fileStream.Close();            fileStream.Dispose();            fileStream = null;            return binary;        }