/// 從字符串轉(zhuǎn)換到16進(jìn)制表示的字符串

/// 編碼,如"utf-8","gb2312"

/// 是否每字符用逗號(hào)分隔

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();

}

/// 從16進(jìn)制轉(zhuǎn)換成utf編碼的字符串

/// 編碼,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

throw new ArgumentException("hex is not a valid number!", "hex");

}

// 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);

}

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