C # 16 conversions between strings and byte arrays

1. How to convert a decimal number string to a hexadecimal number in C #//Decimal to Binary Console.WriteLine ("Decimal 166 binary notation:" +convert.tostring (166, 2));// Decimal to Octal Console.WriteLine ("Octal Representation of decimal 166:" +convert.tostring (166, 8));//Decimal to hexadecimal Console.WriteLine ("Decimal 166 hexadecimal representation:"   +convert.tostring (166, 16)); Binary to Decimal Console.WriteLine ("Decimal Representation of binary 111101:" +convert.toint32 ("111101", 2));//octal to Decimal Console.WriteLine ("Octal 44 Decimal notation: "+convert.toint32 (" 44 ", 8));//hexadecimal to decimal Console.WriteLine (" Decimal Representation of hexadecimal cc: "+convert.toint32 (" CC ", 16)); 2.  In the serial communication process, it is often used to convert between 16 and string, byte array//private string stringtohexstring (string s,encoding encode) {byte[] b = encode. GetBytes (s);//The string is programmed into a byte array by the specified encoding string result = String.            Empty; for (int i = 0; i < b.length; i++)//byte to 16 characters, separated by% {result + = "%" +convert.tostring (B[i], 1            6);        } return result; } private String Hexstringtostring (string hs, Encoding encode) {//Divide the string with%, and remove the null character Stri Ng[] chars = hs. SPlit (new char[]{'% '},stringsplitoptions.removeemptyentries); Byte[] B = new Byte[chars.            Length]; Each character becomes 16 bytes of data for (int i = 0; i < chars. Length;            i++) {B[i] = Convert.tobyte (chars[i], 16); }//Follow the specified encoding to change the byte array to the string return encode.        GetString (b); }///<summary>///String to 16 byte array///</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>// byte array to 16 binary strings///</summary>//<param name= "bytes" ></param>//&LT;RETURNS&GT;&L            t;/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>//Convert from Kanji to 16///</summary>//<param name= "s" ></param> <param name= "CharSet" > Encoding, such as "Utf-8", "gb2312" </param>//<param name= "Fenge" > whether each word trailing characters comma-delimited &l t;/param>//<returns></returns> public static string Tohex (string s, String charset, bool Fe Nge) {if ((s.length% 2)! = 0) {s + = "";//Space//throw new Ar Gumentexception ("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>///from 16 into Chinese characters//</summary>//<param name= "hex" ></param>        <param name= "CharSet" > Codes, such as "Utf-8", "gb2312" </param>//<returns></returns> public static string Unhex (string hex, String charset) {if (hex = = null) throw new Argum             Entnullexception ("hex"); Hex = hex.             Replace (",", ""); Hex = hex.             Replace ("\ n", ""); Hex = Hex.             Replace ("\ \", ""); Hex = hex.            Replace ("", ""); if (hex.            Length% 2 = 0) {hex + = "20";//space}//need to convert hex to byte array. byte[] bytes = new Byte[hex.           LENGTH/2]; for (int i = 0; i < bytes. Length;                     i++) {try {//Every two characters is a 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 to CHS.         GetString (bytes); }

    <summary>///    16 binary strings converted to 8-bit binary arrays///</summary>//    <param name= "hexstring" ></ param>    //<returns></returns> private byte[] Hexstrtobytearray (string hexstring)    {        hexstring = Hexstring.replace ("", "");        if ((hexstring.length% 2)! = 0)            throw new ArgumentException ("hexadecimal string length is incorrect");        byte[] buffer = new BYTE[HEXSTRING.LENGTH/2];        for (int i = 0; i < buffer. Length; i++)        {            Buffer[i] = Convert.tobyte (hexstring.substring (i * 2, 2). Trim (), 0x10);        }        return buffer;    }

C # 16 conversions between strings and byte arrays