How can I use JToken.SelectToken for finding values inside a path that match a pattern (e.g. find all values that are valid email addresses)? Is there any Regex compatibility like other frameworks support?
I'm not sure if this is documented anywhere (I didn't find at least), but actually in last versions (starting with 11.0.1 it seems) it does. Syntax is =~ /regex here/. For example:
JObject o = JObject.Parse("{\"Objects\": [{\"Email\": \"[email protected]\"}, {\"Email\":\"not an email\"}]}");
// returns only "[email protected]" token
var result = o.SelectToken(@"$.Objects[?(@.Email =~ /^\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/)]");