How to write this regex?

I want to to replace the ID and name with new ones in this string -- " p: {ID: 323233434, name: Bson, type: 3}"

How could I use the regex to replace it by new ones ?

I try it like this:
string blockStr = Regex.Replace(blockStr, " p: {ID[\\s\\S]*,)", "o: {ID:" + id+","); //the lowercase "id" is my valurabe


but it does not works...

 

Oops... emoji...

 

You can test your regular expressions with tools like https://regexr.com/ (online). The matching pattern in your case could be

@" p: {ID:\s\d*,"

(Use @"..." for strings that include a lot of backslashes.)

That being said ...

Never ever manipulate serialized data structures directly with text manipulation functions! JSON, XML, etc. just look like plain text but this is deceiving and you could be in a lot of pain when you rely on the order of elements and existence of whitespace.

HOWTO Avoid Being Called a Bozo When Producing XML applies to JSON, too.

You should use the right tools. In this case a JSON parser that unserializes your data. You then change the data and serialize it again.

 

Oh... Get it. Thanks very much .. Anyway, what is the matching pattern of numbers ,letters and space, I set it like "\d[0-9a-z]*" but It does not seem working...

 

https://www.regular-expressions.info/