1.c#中如何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.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

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 = ; i < b.Length; i++)//逐字节变为16进制字符，以%隔开{result += "%"+Convert.ToString(b[i], );}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 = ; i < chars.Length; i++){b[i] = Convert.ToByte(chars[i], );}//按照指定编码将字节数组变为字符串return encode.GetString(b);}

字符串转16进制字节数组/// 
/// 字符串转16进制字节数组/// /// /// 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;}

字节数组转16进制字符串/// 
/// 字节数组转16进制字符串/// /// /// public static string byteToHexStr(byte[] bytes){string returnStr = "";if (bytes != null){for (int i = ; i < bytes.Length; i++){returnStr += bytes[i].ToString("X2");}}return returnStr;}

从汉字转换到16进制/// 
/// 从汉字转换到16进制/// /// /// 编码,如"utf-8","gb2312"/// 是否每字符用逗号分隔/// public static string ToHex(string s, string charset, bool fenge){if ((s.Length % ) != ){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 = ; i < bytes.Length; i++){str += string.Format("{0:X}", bytes[i]);if (fenge && (i != bytes.Length - )){str += string.Format("{0}", ",");}}return str.ToLower();}

16进制转换成汉字
///
/// 从16进制转换成汉字/// /// /// 编码,如"utf-8","gb2312"/// 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);}

转自：https://www.bbsmax.com/A/ZOJPPaxaJv/

串口通讯，发送你的串口信息：https://blog.csdn.net/weixin_45023328/article/details/108128883