正则表达式以匹配管道（|）或行尾

Question

I have the following regex to match name-value pairs:

^(?<NameValue>(?<Name>[A-Z][\w]*):(?<Value>[\w]*)(?=(\||\z)))+$

I trying to match the pipe character or end of line. Essentially it should match text like

Setting1:Value1|Setting2:Value2|Setting3:Value3

Anyone have any idea what I'm doing wrong. It's been a while since I've had regex stump me like this :) Update: Ended up with

^(?:(?<NameValue>(?<Name>[A-Z][\w]*):(?<Value>[\w]*))(?m:\||$))+

Thanks everyone!

Answer 1

Regex to match pipe or end of line:

(?m:\||$)

The m ultiline flag makes $ match end of line.

\\z will only match end of string, never end of line.

You could use an expression like:

var re = @"(?xm)
    \A
    (?:
       (?<Name>[A-Z]\w*)
       :
       (?<Value>\w*)
       (?: \| | $ )
    )+
    \z";