定義string變量為str,內存流變量為ms,比特數組為bt
1.字符串轉比特數組
(1)byte[] bt=System.Text.Encoding.Default.GetBytes("字符串");
(2)byte[] bt=Convert.FromBase64String("字符串");
2.字符串轉流
(1)MemoryStream ms=new MemoryStream(System.Text.Encoding.Default.GetBytes("字符串"));
(2)MemoryStream ms=new MemoryStream(Convert.FromBase64String("字符串"));
3.流轉比特數組
(1)byte[] bt=ms.ToArray();
(2)MemoryStream ms=new MemoryStream();ms.Write(bt,0,ms.Length);
4.流轉字符串
(1)string str=Convert.ToBase64String(ms.ToArray());
(2)string str=System.Text.Encoding.Default.GetString(ms.ToArray());
5.比特數組轉字符串
(1)string str=System.Text.Encoding.Default.GetString(bt);
(2)string str=Convert.ToBase64String(bt);
6.比特數組轉流
(1)MemoryStream ms=new MemoryStream(bt);
(2)MemoryStream ms=new MemoryStream();ms.Read(bt,0,bt.Length);
總結：可以看出byte[]在字符串string和流MemoryStream之間轉換起到過渡的作用，string和MemoryStream轉換都要先轉換成byte[]。
