c# - How to get several lines from a text file? -

i have text file:

hh     sdf....     1 line      empty line     other line     goal       apf ee     1 line      goal  

list<string> goo = new list<string>();  system.io.streamreader file = new system.io.streamreader("text.txt"); while (file.endofstream != true) {     string s = file.readline();     if (s.contains("something"))     {                     goo.add(s);     } } 

i want lines after something , until goal. there many something , goal in file. should use array or somthing...?

i'll offer linq-style solution. first, simple helper extension method picking subranges out of ienumerable<t>:

public static class enumerablehelper {     public static ienumerable<list<t>> getwindows<t>(         ienumerable<t> source,         func<t, bool> begin,         func<t, bool> end)     {         list<t> window = null;         foreach (var item in source)         {             if (window == null && begin(item))             {                 window = new list<t>();             }             if (window != null)             {                 window.add(item);             }             if (window != null && end(item))             {                 yield return window;                 window = null;             }         }     } }; 

now can windows of text you're interested in this:

list<list<string>> windows = file.readlines("file.txt")     .getwindows(         line => line.contains("something"),         line => line.contains("goal"))     .tolist(); 

each item in windows list of lines of text correspond single "something...goal" pair.