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
1 private string StringToHexString(string s,Encoding encode)
2 {
3 byte[] b = encode.GetBytes(s);//按照指定编码将string编程字节数组
4 string result = string.Empty;
5 for (int i = 0; i < b.Length; i++)//逐字节变为16进制字符，以%隔开
6 {
7 result += "%"+Convert.ToString(b[i], 16);
8 }
9 return result;
10 }
11 private string HexStringToString(string hs, Encoding encode)
12 {
13 //以%分割字符串，并去掉空字符
14 string[] chars = hs.Split(new char[]{'%'},StringSplitOptions.RemoveEmptyEntries);
15 byte[] b = new byte[chars.Length];
16 //逐个字符变为16进制字节数据
17 for (int i = 0; i < chars.Length; i++)
18 {
19 b[i] = Convert.ToByte(chars[i], 16);
20 }
21 //按照指定编码将字节数组变为字符串
22 return encode.GetString(b);
23 }
字符串转16进制字节数组
/// <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;
}
1 字节数组转16进制字符串
2 /// <summary>
3 /// 字节数组转16进制字符串
4 /// </summary>
5 /// <param name="bytes"></param>
6 /// <returns></returns>
7 public static string byteToHexStr(byte[] bytes)
8 {
9 string returnStr = "";
10 if (bytes != null)
11 {
12 for (int i = 0; i < bytes.Length; i++)
13 {
14 returnStr += bytes[i].ToString("X2");
15 }
16 }
17 return returnStr;
18 }
1 从汉字转换到16进制
2 /// <summary>
3 /// 从汉字转换到16进制
4 /// </summary>
5 /// <param name="s"></param>
6 /// <param name="charset">编码,如"utf-8","gb2312"</param>
7 /// <param name="fenge">是否每字符用逗号分隔</param>
8 /// <returns></returns>
9 public static string ToHex(string s, string charset, bool fenge)
10 {
11 if ((s.Length % 2) != 0)
12 {
13 s += " ";//空格
14 //throw new ArgumentException("s is not valid chinese string!");
15 }
16 System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset);
17 byte[] bytes = chs.GetBytes(s);
18 string str = "";
19 for (int i = 0; i < bytes.Length; i++)
20 {
21 str += string.Format("{0:X}", bytes[i]);
22 if (fenge && (i != bytes.Length - 1))
23 {
24 str += string.Format("{0}", ",");
25 }
26 }
27 return str.ToLower();
28 }
16进制转换成汉字
///<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);
}
转自：https://www.cnblogs.com/dj1232090/p/5737556.html