学步园

在串口通讯过程中，经常要用到 16进制与字符串、字节数组之间的转换

http://blog.csdn.net/feishanm/archive/2008/10/20/3112716.aspx

字符串转16进制字节数组

private static byte[] strToToHexByte(string hexString)<br /> {<br /> hexString = hexString.Replace(" ", "");<br /> if ((hexString.Length % 2) != 0)<br /> hexString += " ";<br /> byte[] returnBytes = new byte[hexString.Length / 2];<br /> for (int i = 0; i < returnBytes.Length; i++)<br /> returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);<br /> return returnBytes;<br /> }

 字节数组转16进制字符串

public static string byteToHexStr(byte[] bytes)<br /> {<br /> string returnStr = "";<br /> if (bytes != null)<br /> {<br /> for (int i = 0; i < bytes.Length; i++)<br /> {<br /> returnStr += bytes[i].ToString("X2");<br /> }<br /> }<br /> return returnStr;<br /> }

从汉字转换到16进制

public static string ToHex(string s, string charset, bool fenge)<br /> {<br /> if ((s.Length % 2) != 0)<br /> {<br /> s += " ";//空格<br /> //throw new ArgumentException("s is not valid chinese string!");<br /> }<br /> System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset);<br /> byte[] bytes = chs.GetBytes(s);<br /> string str = "";<br /> for (int i = 0; i < bytes.Length; i++)<br /> {<br /> str += string.Format("{0:X}", bytes[i]);<br /> if (fenge && (i != bytes.Length - 1))<br /> {<br /> str += string.Format("{0}", ",");<br /> }<br /> }<br /> return str.ToLower();<br /> }

从16进制转换成汉字

public static string UnHex(string hex, string charset)<br /> {<br /> if (hex == null)<br /> throw new ArgumentNullException("hex");<br /> hex = hex.Replace(",", "");<br /> hex = hex.Replace("/n", "");<br /> hex = hex.Replace("//", "");<br /> hex = hex.Replace(" ", "");<br /> if (hex.Length % 2 != 0)<br /> {<br /> hex += "20";//空格<br /> }<br /> // 需要将 hex 转换成 byte 数组。<br /> byte[] bytes = new byte[hex.Length / 2];</p> <p> for (int i = 0; i < bytes.Length; i++)<br /> {<br /> try<br /> {<br /> // 每两个字符是一个 byte。<br /> bytes[i] = byte.Parse(hex.Substring(i * 2, 2),<br /> System.Globalization.NumberStyles.HexNumber);<br /> }<br /> catch<br /> {<br /> // Rethrow an exception with custom message.<br /> throw new ArgumentException("hex is not a valid hex number!", "hex");<br /> }<br /> }<br /> System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset);<br /> return chs.GetString(bytes);<br /> }