c# - Create Regex search instance for each item in a string -

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using visual.web.developer.2010.express;

n00b here,
how make search instance each line of text in string1? want search string2 in it's entirety see if contains 1 line of text in string1's search instance every item in string2. both string1 , string2 have lines of text separated '\n'. there obvious way this? suggested regex, how incorporate regex find , print out matches in string2 each item in string1.. there more few instances in string2 relate single item in string1.

a few in string1:
part_numbers
1017foo
1121bar
etc...

a few in string2:
supercola 51661017fooaindo
dasudama c 89891121barblo5w
etc...

probably going figure out later, want them formatted this, fyi

1017foo matched:
supercola 51661017fooaindo
+another 1 1017foo matched+
etc...

in advance!
looking pointers in right direction, on methods should using

your requirements written don't require regular expressions didn't use them. should able incorporate them pretty if need to...

string partnumbers = @"1017foo 1121bar somethingelse"; string searchtext = @"supercola 51661017fooaindo dasudama c 89891121barblo5w";  string[] searchterms = partnumbers.split('\n'); string[] searchedlines = searchtext.split('\n');  stringbuilder output = new stringbuilder();  foreach(string searchterm in searchterms){     int matchcount = 0;      output.appendline(string.format("for term: {0}", searchterm.trim()));     foreach(string searchedline in searchedlines){         if(searchedline.trim().tolower().contains(searchterm.trim().tolower())){             output.appendline(searchedline.trim());             matchcount++;         }     }      if(matchcount == 0){         output.appendline("there no match");     }      output.appendline("== end of search =="); }  console.writeline(output.tostring());

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