iv'e been looking for a good forum

so my first question
can anyone tell me if there is a helper class for string builder
that lets you easily and safely pull appended lines
out of a StringBuilder object into another or gives more of the methods
that a regular string has like split and such

i cant seem to get a reply or even a comment on other forums
other then stack overflow were it was just a snotty "hummppp"
so i simplified it and removed my code to the basic question

also when i first registered the link to the forum tags and code poped up
now i cant find them were did they go ?