字符串拆分操作C# [英] Strings splitting operations C#
问题描述
hi
i希望从字符串中获取特定的子字符串..解释
如果我有
string hex =7E 00 0F 10 01 00 13 A2 00 40 81 AB C4 FF FE 00 00 01 0B;
01在字符串末尾仅来自字符串但是!我不想用普通的子串函数来制作它,因为在我的情况下01可以变化它可以是01 c5或任何东西。咬的数量不是恒定的
我们可以用其他方式表达它像
7E 00 0F 10 01 00 13 A2 00 40 81 AB C4 FF FE 00 00(N)0B
虽然N是可变长度..但其他数据包部分是const长度 。
btw这是apacket,01或N是RF数据
谢谢
使用正则表达式:
string hex1 = 7E 00 0F 10 01 00 13 A2 00 40 81 AB C4 FF FE 00 00 01 0B;
string hex2 = 7E 00 0F 10 01 00 13 A2 00 40 81 AB C4 FF FE 00 00 01 FF FE 66 0B;
Regex reg = new 正则表达式( @ (?< = 7E 00 0F 10 01 00 13 A2 00 40 81 AB C4 FF FE 00 00)(..)*(?= 0B));
匹配m = reg.Match(hex1);
if (m.Success)
{
Console.WriteLine(m.Value);
}
m = reg.Match(hex2);
if (m.Success)
{
Console.WriteLine(m.Value);
}将产生:
01
01 FF FE 66
hi
i want to get specific sub string from the string .. Explanation
if i have
string hex= " 7E 00 0F 10 01 00 13 A2 00 40 81 AB C4 FF FE 00 00 01 0B " ;
01 at end of string only from the string But ! i dont wanna make it with the normal substring function because in my case 01 may variate it can be 01 c5 or anything .. number of bites is not constant
in other way we can express it like
" 7E 00 0F 10 01 00 13 A2 00 40 81 AB C4 FF FE 00 00 (N) 0B "
While N is variable length ..but other packet parts is const length .
btw This is apacket and 01 or N is RF Data
Thanks
Use a Regex:
string hex1 = " 7E 00 0F 10 01 00 13 A2 00 40 81 AB C4 FF FE 00 00 01 0B "; string hex2 = " 7E 00 0F 10 01 00 13 A2 00 40 81 AB C4 FF FE 00 00 01 FF FE 66 0B "; Regex reg = new Regex(@"(?<=7E 00 0F 10 01 00 13 A2 00 40 81 AB C4 FF FE 00 00 )(.. )*(?=0B )"); Match m = reg.Match(hex1); if (m.Success) { Console.WriteLine(m.Value); } m = reg.Match(hex2); if (m.Success) { Console.WriteLine(m.Value); }Will produce:
01 01 FF FE 66
这篇关于字符串拆分操作C#的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!