獲取一張圖片的字節數組及字節數組的合併

      public Byte[] Tupian() 獲取一張圖片的字節數組
        {
            FileStream fs = new FileStream(@"G:\smartrt\bin\Debug\Data\tpl\111.jpg", FileMode.Open);
            int filelength = 0;
            filelength=(int) fs.Length; //得到文件長度
            Byte[] fl = new Byte[filelength]; //創建一個字節數組
            fs.Read(fl, 0, filelength); //按字節流讀取
            fs.Close();
            return fl;
        }
        public static byte[] copybyte(byte[] a, byte[] b)字節數組的合併
        {
            byte[] c = new byte[a.Length + b.Length];
            a.CopyTo(c, 0);
            b.CopyTo(c, a.Length);
            return c;
        }