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C# 16进制与字符串、字节数组之间的转换
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 | /// <summary> /// 字符串转16进制字节数组 /// </summary> /// <param name="hexString"></param> /// <returns></returns> private static byte [] strToToHexByte( string hexString) { hexString = hexString.Replace( " " , "" ); if ((hexString.Length % 2) != 0) hexString += " " ; byte [] returnBytes = new byte [hexString.Length / 2]; for ( int i = 0; i < returnBytes.Length; i++) returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16); return returnBytes; } /// <summary> /// 字节数组转16进制字符串 /// </summary> /// <param name="bytes"></param> /// <returns></returns> public static string byteToHexStr( byte [] bytes) { string returnStr = "" ; if (bytes != null ) { for ( int i = 0; i < bytes.Length; i++) { returnStr += bytes[i].ToString( "X2" ); } } return returnStr; } /// <summary> /// 从汉字转换到16进制 /// </summary> /// <param name="s"></param> /// <param name="charset">编码,如"utf-8","gb2312"</param> /// <param name="fenge">是否每字符用逗号分隔</param> /// <returns></returns> public static string ToHex( string s, string charset, bool fenge) { if ((s.Length % 2) != 0) { s += " " ; //空格 //throw new ArgumentException("s is not valid chinese string!"); } System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset); byte [] bytes = chs.GetBytes(s); string str = "" ; for ( int i = 0; i < bytes.Length; i++) { str += string .Format( "{0:X}" , bytes[i]); if (fenge && (i != bytes.Length - 1)) { str += string .Format( "{0}" , "," ); } } return str.ToLower(); } ///<summary> /// 从16进制转换成汉字 /// </summary> /// <param name="hex"></param> /// <param name="charset">编码,如"utf-8","gb2312"</param> /// <returns></returns> public static string UnHex( string hex, string charset) { if (hex == null ) throw new ArgumentNullException( "hex" ); hex = hex.Replace( "," , "" ); hex = hex.Replace( "\n" , "" ); hex = hex.Replace( "\\" , "" ); hex = hex.Replace( " " , "" ); if (hex.Length % 2 != 0) { hex += "20" ; //空格 } // 需要将 hex 转换成 byte 数组。 byte [] bytes = new byte [hex.Length / 2]; for ( int i = 0; i < bytes.Length; i++) { try { // 每两个字符是一个 byte。 bytes[i] = byte .Parse(hex.Substring(i * 2, 2), System.Globalization.NumberStyles.HexNumber); } catch { // Rethrow an exception with custom message. throw new ArgumentException( "hex is not a valid hex number!" , "hex" ); } } System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset); return chs.GetString(bytes); } |
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