在串口通訊過程中，經常要用到 16進制與字符串、字節數組之間的轉換

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字符串轉16進制字節數組?1?????????private?static?byte[]?strToToHexByte(string?hexString)
?2?????????{
?3?????????????hexString?=?hexString.Replace("?",?"");
?4?????????????if?((hexString.Length?%?2)?!=?0)
?5?????????????????hexString?+=?"?";
?6?????????????byte[]?returnBytes?=?new?byte[hexString.Length?/?2];
?7?????????????for?(int?i?=?0;?i?<?returnBytes.Length;?i++)
?8?????????????????returnBytes[i]?=?Convert.ToByte(hexString.Substring(i?*?2,?2),?16);
?9?????????????return?returnBytes;
10?????????}

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字節數組轉16進制字符串?1?????????public?static?string?byteToHexStr(byte[]?bytes)
?2?????????{
?3?????????????string?returnStr?=?"";
?4?????????????if?(bytes?!=?null)
?5?????????????{
?6?????????????????for?(int?i?=?0;?i?<?bytes.Length;?i++)
?7?????????????????{
?8?????????????????????returnStr?+=?bytes[i].ToString("X2");
?9?????????????????}
10?????????????}
11?????????????return?returnStr;
12?????????}

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從16進制轉換成漢字?1?????????public?static?string?UnHex(string?hex,?string?charset)
?2?????????{
?3?????????????if?(hex?==?null)
?4?????????????????throw?new?ArgumentNullException("hex");
?5?????????????hex?=?hex.Replace(",",?"");
?6?????????????hex?=?hex.Replace("/n",?"");
?7?????????????hex?=?hex.Replace("//",?"");
?8?????????????hex?=?hex.Replace("?",?"");
?9?????????????if?(hex.Length?%?2?!=?0)
10?????????????{
11?????????????????hex?+=?"20";//空格
12?????????????}
13?????????????//?需要將?hex?轉換成?byte?數組。?
14?????????????byte[]?bytes?=?new?byte[hex.Length?/?2];
15?
16?????????????for?(int?i?=?0;?i?<?bytes.Length;?i++)
17?????????????{
18?????????????????try
19?????????????????{
20?????????????????????//?每兩個字符是一個?byte。?
21?????????????????????bytes[i]?=?byte.Parse(hex.Substring(i?*?2,?2),
22?????????????????????System.Globalization.NumberStyles.HexNumber);
23?????????????????}
24?????????????????catch
25?????????????????{
26?????????????????????//?Rethrow?an?exception?with?custom?message.?
27?????????????????????throw?new?ArgumentException("hex?is?not?a?valid?hex?number!",?"hex");
28?????????????????}
29?????????????}
30?????????????System.Text.Encoding?chs?=?System.Text.Encoding.GetEncoding(charset);
31?????????????return?chs.GetString(bytes);
32?????????}

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從漢字轉換到16進制

?1?public?static?string?ToHex(string?s,?string?charset,?bool?fenge)
?2?????????{
?3?????????????if?((s.Length?%?2)?!=?0)
?4?????????????{
?5?????????????????s?+=?"?";//空格
?6?????????????????//throw?new?ArgumentException("s?is?not?valid?chinese?string!");
?7?????????????}
?8?????????????System.Text.Encoding?chs?=?System.Text.Encoding.GetEncoding(charset);
?9?????????????byte[]?bytes?=?chs.GetBytes(s);
10?????????????string?str?=?"";
11?????????????for?(int?i?=?0;?i?<?bytes.Length;?i++)
12?????????????{
13?????????????????str?+=?string.Format("{0:X}",?bytes[i]);
14?????????????????if?(fenge?&&?(i?!=?bytes.Length?-?1))
15?????????????????{
16?????????????????????str?+=?string.Format("{0}",?",");
17?????????????????}
18?????????????}
19?????????????return?str.ToLower();
20?????????}

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轉載于:https://www.cnblogs.com/eric_ibm/archive/2012/01/14/2322413.html

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