正则表达式-匹配引号之间的字符串以及引号之前的字符串

Question

If I have a file that I need to search through for every occurrence of this:

firstName="string"

I know how to match the string between the quotes, but I would like to know how to match the variations of what precedes it. Like:

firstName ="string"
firstName = "string"

So, basically, I need to get all the strings, but I encountered a problem when there are variations like that, with added spaces before or after =. I'm sure this is really simple, but I'm really bad at regex so I would appreciate your help. Thank you in advance for your answer.

Answer 1

I do not know about C# explicitely, however something like the following should work:

(\w+)\s*=\s*"(.*?)"

(\\w+) matches a block of alphanumeric characters an creates a capturing group

\\s* matches 0 or more spacing characters

= matches =

\\s* matches 0 or more spacing characters

"(.*?)" matches "anything" and creates a capturing group over what's inside ""

I guess you need to make sure the global flag is enabled to get all matches.