C# and Regex - Unrecognized grouping construct

Question

Currently working on my thesis for a client/server app. I\'ve run into a snag were the server receives information like this:

ProToCooL,unknown|DESKTOP-29COF         


        

Answer 1

.NET regex does not support recursion. The regex you are using (\(((?:[^()]|(?R))+)\)) is for PCRE, and you can use it with PCRE.NET library in a C# app.

As an alternative, you can use a .NET regex to match balanced parentheses:

\(((?>[^()]+|\((?<n>)|\)(?<-n>))+(?(n)(?!)))\)

See regex demo.

It returns all those 12 matches as the PCRE regex.