C#串口通讯，16进制与字符串、字节数组之间的转换。

C#串口通讯，16进制与字符串、字节数组之间的转换。

1.将十进制数的字符串转化成十六进制数的字符串

//十进制转二进制Console.WriteLine("十进制166的二进制表示: "+Convert.ToString(166, 2));//十进制转八进制Console.WriteLine("十进制166的八进制表示: "+Convert.ToString(166, 8));//十进制转十六进制Console.WriteLine("十进制166的十六进制表示: "+Convert.ToString(166, 16));//二进制转十进制Console.WriteLine("二进制 111101 的十进制表示: "+Convert.ToInt32("111101", 2));//八进制转十进制Console.WriteLine("八进制 44 的十进制表示: "+Convert.ToInt32("44", 8));//十六进制转十进制Console.WriteLine("十六进制 CC的十进制表示: "+Convert.ToInt32("CC", 16));

2.16进制与字符串、字节数组之间的转换

PRivate string StringToHexString(string s,Encoding encode) { byte[] b = encode.GetBytes(s);//按照指定编码将string编程字节数组 string result = string.Empty; for (int i = 0; i < b.Length; i++)//逐字节变为16进制字符，以%隔开 { result += "%"+Convert.ToString(b[i], 16); } return result; } private string HexStringToString(string hs, Encoding encode) { //以%分割字符串，并去掉空字符 string[] chars = hs.Split(new char[]{'%'},StringSplitOptions.RemoveEmptyEntries); byte[] b = new byte[chars.Length]; //逐个字符变为16进制字节数据 for (int i = 0; i < chars.Length; i++) { b[i] = Convert.ToByte(chars[i], 16); } //按照指定编码将字节数组变为字符串 return encode.GetString(b); }

3.///<summary>///字符串转16进制字节数组///</summary>///<param name="hexString"></param>///<returns></returns>privatestaticbyte[] strToToHexByte(stringhexString){ hexString=hexString.Replace("","");if((hexString.Length%2)!=0) hexString+="";byte[] returnBytes=newbyte[hexString.Length/2];for(inti=0; i<returnBytes.Length; i++) returnBytes[i]=Convert.ToByte(hexString.Substring(i*2,2),16);returnreturnBytes; }

///<summary>///字节数组转16进制字符串///</summary>///<param name="bytes"></param>///<returns></returns>publicstaticstringbyteToHexStr(byte[] bytes){stringreturnStr="";if(bytes!=null){for(inti=0; i<bytes.Length; i++){ returnStr+=bytes[i].ToString("X2"); } }returnreturnStr; }

///<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>publicstaticstringToHex(strings,stringcharset,boolfenge){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);stringstr="";for(inti=0; i<bytes.Length; i++){ str+=string.Format("{0:X}", bytes[i]);if(fenge&&(i!=bytes.Length-1)){ str+=string.Format("{0}",","); } }returnstr.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>publicstaticstringUnHex(stringhex,stringcharset){if(hex==null)thrownewArgumentNullException("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=newbyte[hex.Length/2];for(inti=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.thrownewArgumentException("hex is not a valid hex number!","hex"); } } System.Text.Encoding chs=System.Text.Encoding.GetEncoding(charset);returnchs.GetString(bytes); }