Question

Today my wish is to take text form the string.
This string must be, between last slash and .partX.rar or .rar

First I tried to find edge’s end of the word and then the beginning. After I get that two elements I merged them but I got empty results.

String:

http://hosting.xyz/1234/15-game.part4.rar.html

http://hosting.xyz/1234/16-game.rar.html

Regex:

Begin:(([^/]*)$) – start from last /

End:(.*(?=.part[0-9]+.rar|.rar)) stop before .partX.rar or .rar

As you see, if I merge that codes I won’t get any result.
What is more, “end” select me only .partX instead of .partX.rar

All what I want is:
15-game.part4.rar and 16-game.rar

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What i tried:

(([^/]*)$)(.*(?=.part[0-9]+.rar|.rar))

(([^/]*)$)

(.*(?=.part[0-9]+.rar|.rar))

I tried also

/[a-zA-Z0-9]+

but I do not know how select symbols.. This could be the easiest way. But this select only letters and numbers, not - or _.
If I could select symbols..

Answer 1

I’m not a C# coder so can’t write full code here but I think you’ll need support of negative lookahead here like this:

new Regex("/(?!.*/)(.+?)\.html$");

Matched Group # 1 will have your string i.e. "16-game.rar" OR "15-game.part4.rar"