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1.請(qǐng)問(wèn)c#中如何將十進(jìn)制數(shù)的字符串轉(zhuǎn)化成十六進(jìn)制數(shù)的字符串
//十進(jìn)制轉(zhuǎn)二進(jìn)制
Console.WriteLine("十進(jìn)制166的二進(jìn)制表示: "+Convert.ToString(166, 2));
//十進(jìn)制轉(zhuǎn)八進(jìn)制
Console.WriteLine("十進(jìn)制166的八進(jìn)制表示: "+Convert.ToString(166, 8));
//十進(jìn)制轉(zhuǎn)十六進(jìn)制
Console.WriteLine("十進(jìn)制166的十六進(jìn)制表示: "+Convert.ToString(166, 16));
//二進(jìn)制轉(zhuǎn)十進(jìn)制
Console.WriteLine("二進(jìn)制 111101 的十進(jìn)制表示: "+Convert.ToInt32("111101", 2));
//八進(jìn)制轉(zhuǎn)十進(jìn)制
Console.WriteLine("八進(jìn)制 44 的十進(jìn)制表示: "+Convert.ToInt32("44", 8));
//十六進(jìn)制轉(zhuǎn)十進(jìn)制
Console.WriteLine("十六進(jìn)制 CC的十進(jìn)制表示: "+Convert.ToInt32("CC", 16)); 2.在串口通訊過(guò)程中，經(jīng)常要用到 16進(jìn)制與字符串,、字節(jié)數(shù)組之間的轉(zhuǎn)換
// private string StringToHexString(string s,Encoding encode)
{
byte[] b = encode.GetBytes(s);//按照指定編碼將string編程字節(jié)數(shù)組
string result = string.Empty;
for (int i = 0; i < b.Length; i++)//逐字節(jié)變?yōu)?6進(jìn)制字符,，以%隔開(kāi)
{
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];
//逐個(gè)字符變?yōu)?6進(jìn)制字節(jié)數(shù)據(jù)
for (int i = 0; i < chars.Length; i++)
{
b[i] = Convert.ToByte(chars[i], 16);
}
//按照指定編碼將字節(jié)數(shù)組變?yōu)樽址?br> return encode.GetString(b);
} 字符串轉(zhuǎn)16進(jìn)制字節(jié)數(shù)組
/// <summary>
/// 字符串轉(zhuǎn)16進(jìn)制字節(jié)數(shù)組
/// </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;
} 字節(jié)數(shù)組轉(zhuǎn)16進(jìn)制字符串
/// <summary>
/// 字節(jié)數(shù)組轉(zhuǎn)16進(jìn)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;
} 從漢字轉(zhuǎn)換到16進(jìn)制
/// <summary>
/// 從漢字轉(zhuǎn)換到16進(jìn)制
/// </summary>
/// <param name="s"></param>
/// <param name="charset">編碼,如"utf-8","gb2312"</param>
/// <param name="fenge">是否每字符用逗號(hào)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();
} 16進(jìn)制轉(zhuǎn)換成漢字
///<summary>
/// 從16進(jìn)制轉(zhuǎn)換成漢字
/// </summary>
/// <param name="hex"></param>
/// <param name="charset">編碼,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
}
// 需要將 hex 轉(zhuǎn)換成 byte 數(shù)組,。
byte[] bytes = new byte[hex.Length / 2];
for (int i = 0; i < bytes.Length; i++)
{
try
{
// 每?jī)蓚€(gè)字符是一個(gè) 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);
} |
