Regex for getting key:value from JSON in C#

Question

what is the pattern for getting a-z, A-Z, 0-9, space, special characters to deteck url

This is my input string:

{id:1622415796,name:Vincent Dagpin,picture:https://fbcdn-profile-a.akamaihd.net/hprofile-ak-snc4/573992_1622415796_217083925_q.jpg}

This is the pattern: so far

([a-z_]+):[ ]?([\d\s\w]*(,|}))

Expected Result:

id:1622415796
name:Vincent Dagpin
picture:https://fbcdn-profile-a.akamaihd.net/hprofile-ak-snc4/573992_1622415796_217083925_q.jpg

the problem is i can't get the last part.. the picture url..

any help please..

Why do you parse it yourself? Use a JSON parser and stop worriing!? — Argeman
– Argeman, Commented Apr 19, 2012 at 13:35
Might I suggest json.codeplex.com which has done all the work for you already :) — Justin Pihony
– Justin Pihony, Commented Apr 19, 2012 at 13:36
What problem? That is probably more your issue than needing a regex. — Justin Pihony
– Justin Pihony, Commented Apr 19, 2012 at 13:37
stackoverflow.com/questions/6076310/… describes your actual problem and how to fix it. Don't use regex. It's insanity. ... just install the right .net servicepack for your machine. — spender
– spender, Commented Apr 19, 2012 at 13:51

ShawnFeatherly · Accepted Answer · 2015-06-12 21:09:00Z

2

If this is the only kind of json input you expect and further json parsing is very unlikely, a full json parser would be overkill.

A string split may be all you need, jsonString.Split(',', '{', '}'); The regex for that would be along the lines of [{},]([a-z_]+):[ ]?(.+?)(?=,|})

If you can modify the json string that's being sent, you can key the RegEx on something else, like double quotes. Here's one I'm using that requires knowing the json key name. System.Text.RegularExpressions.Regex("(?<=\"" + key + "\"+ *: *\"+).*(?=\")");

answered Jun 12, 2015 at 21:09

ShawnFeatherly

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1 Comment

adrien Over a year ago

If you try to select the value of a key anywhere in the json besides in the last element, this will take all the string after the match .*. If you know what character classes to expect you can use [a-zAZ]* instead.

Community · Accepted Answer · 2017-05-23 11:58:33Z

0

I don't think a regex is the right solution. C# already contains the tools you need in JavaScriptSerializer. Check out the answer here to see how.

edited May 23, 2017 at 11:58

CommunityBot

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answered Apr 19, 2012 at 13:38

Zac B

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1 Comment

Zac B Over a year ago

Try browsing the links/suggestions on this question, then: stackoverflow.com/questions/4427473/…

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