如何在正则表达式中显示减号和加号

Question

I wrote a code that can take some values from the internet, and it works quite well. The only drawback is that the operators + and - are not shown in my table. If for example I have a value type: +8 or -9 the regex me back 8 and 9, while I wish that the variable is mantained the + and - in front of the respective figures, such as +8 and -9.. The course is variable of type string as I do?

 .Differenza_reti = Val(Regex.Match(Content, "<td class=""number gd""\s*>[\+\-]?(\d+)</td>").Groups(1).ToString)

Answer 1

您需要将角色类放置在捕获组中以保留它们。

([+-]?\d+)