C# 16进制与字符串、字节数组之间的转换

详细出处参考：http://www.jb51.net/article/18147.htm

代码如下:

/// <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;

}

字节数组转16进制字符串

/// <summary>

/// 字节数组转16进制字符串

/// </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;

}

从汉字转换到16进制

/// <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>

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);

}

详细出处参考：http://www.jb51.net/article/18147.htm