c# - Count lines for a particular string combination -

i trying count no. of lines in productservices , add product appearing.

logs :

info [productservices] add product has been performed gulanand on product id 424 () info [productservices] add product has been performed gulanand on product id 424 () info [productservices] add product has been performed gulanand on product id 424 () info [productservices] update product has been performed gulanand on product id 424 () info [productservices] update product has been performed gulanand on product id 424 () info [productservices] add product has been performed gulanand on product id 424 () info [productservices] add product has been performed gulanand on product id 424 () info [productservices] add product has been performed gulanand on product id 424 ()

code have tried :

ienumerable<string> textlines =     directory.getfiles(@"c:\users\karansha\desktop\ashish logs\", "*.*")                         .select(filepath => file.readalllines(filepath))                         .selectmany(line => line);  list<string> users = new list<string>();  regex r = new regex(@"*productservices\sadd product"); foreach (string line in textlines) {     if (r.ismatch(line))     {         users.add(line);     } } //string[] textlines1 = new list<string>(users).toarray(); int countlines = users.count(); console.writeline("productscreated=" + countlines); 

what this: (for each file)

string[] lines = file.readalllines(filepath) int count = lines.count(input => input.contains("productservices") &&                                   input.contains("add product"));