C#中如何将字符串转换byte[]，同时如何将byte[]换成字符串?

时间：2011-04-25 来源：seoxs

C#中如何将字符串转换byte[]，同时如何将byte[]换成字符串!

1 string to byte  []
string str = "abcd"  ;
byte[] bytes = System.Text.Encoding.ASCII.GetBytes(str);
   -------------------------------------------------------------------------------------------------------------
2 byte[]   to string

byte[] bytes = new byte[255] ;
   string str = System.Text.Encoding.ASCII.GetString(bytes,0,bytes.Length);
--------------------------------------------------------------------------------------------

在附上二个方法：

   private static byte[] HexStringToByteArray(string s)
        {
            s = s.Replace(" ", "");
            byte[] buffer = new byte[s.Length / 2];
            for (int i = 0; i < s.Length; i += 2)
                buffer[i / 2] = (byte)Convert.ToByte(s.Substring(i, 2), 16);
            return buffer;
        }

　　　　///

          ///www.elivn.com
        private string ByteArrayToHexString(byte[] data)
        {
            StringBuilder sb = new StringBuilder(data.Length * 3);
            foreach (byte b in data)
                sb.Append(Convert.ToString(b, 16).PadLeft(2, '0').PadRight(3, ' '));
            return sb.ToString().ToUpper();
        }

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