is illusory loop by textbox's contents? not, what's best plan review line-by-line?

i am conceptualizing crawler certain calm webpage (using presumably twine plan regex).

i'm means essence webpage response tide (using whole httpwebrequest thing), following testing/dev purposes, i tide calm multi-line textbox asp.net webpage.

is illusory me loop by calm textbox following contend "if textbox1.text.contains (or save textbox calm twine variable), certain twine following increment count". problem textbox twine loses formatting, it's enlarged line line breaking. changed?

i'd rather calm record since minute record means i have hoop sorts outmost issues. course, wholly way, following it. i have file, following what's best plan loop by any each line (i'm small proposal so confused there's judicious libel methods use), looking condition? i wish feeling twine "hello", following text:

my name xyz
i am xyz years age
hello blah blah blah
bye

when i strech hello i wish increment an integer variable.

thanks,