C# how to separate by paragraph?

Question

so I know a paragraph is char 10 + char 13 I do:

streamreader sr = new streamreader();
string s = sr.ReadToEnd();
string s1 = s.Replace((char)10, "*");
string s2 = s1.Replace((char)13, "*");

Now it changed paragraphs to two ** but how do I split by 2 chars? Anyone have any alternatives to splitting paragraphs?

way of easily splitting paragraphs OR
way of splitting by two chars

possible duplicate of [string.split - by multiple character delimiter](http://stackoverflow.com/questions/1254577/string-split-by-multiple-character-delimiter) — Chris Haas, Mar 12 '12 at 16:04

score 5 · Answer 1 · answered Mar 12 '12 at 16:10

string doc = "line1\r\nline2\r\nline3";
var docLines = doc.Split(new string[] { "\r\n" }, System.StringSplitOptions.None);

Alliteratively you could use Environment.NewLine... which would keep things standard.

var docLines = doc.Split(new string[] { Environment.NewLine }, System.StringSplitOptions.None);

score 3 · Answer 2 · answered Mar 12 '12 at 16:04

3

Assuming you mean ASCII cr+lf (13+10), just use StreamReader.ReadLine().

answered Mar 12 '12 at 16:04

tomfanning

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score 2 · Answer 3 · answered Mar 12 '12 at 16:10

Have you tried Regex? Windows uses \r(13) folowed by \n(10) as a line separator, so you would get lines. But if you want blocks of text separated by at least one empty line, you might try this:

 string inputString = sr.ReadToEnd();

 string[] paragraphs = Regex.Split(inputString , "(\r\n){2,}");

Saeed Amiri · Answer 4 · 2012-03-12T16:15:22.370

1

See string.Split(string[], StringSplitOption):

var result = s2.Split(new []{"**"}, StringSplitOption.RemoveEmptyEntries)

Also you can do it by using Environment.NewLine, without convert it to **:

var result = s.Split(new []{Enviornment.NewLine}, StringSplitOption.RemoveEmptyEntries)

edited Mar 12 '12 at 16:15

answered Mar 12 '12 at 16:08

Saeed Amiri

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The problem with the ** is that he is copying it into 2 more strings to make that happen... if that file was large it would eat memory like crazy, thus I would avoid the ** approach completely. – CrazyDart Mar 12 '12 at 16:15
@CrazyDart, I wrote both ways before your comment and your answer, Also I just edit it to add link to msdn document.(again before your comment) – Saeed Amiri Mar 12 '12 at 16:18
I dont debate that, all I am saying is that the OP should not use the ** method because of the heavy lifting. Its not optimal. I am guessing the only reason that was done was to reveal the \r\n. In the end, Mithrandir may have the better answer... the regex engine will likely work faster. – CrazyDart Mar 12 '12 at 16:26
@CrazyDart, I'm agree with you. but is good for OP to knoe it step by step. – Saeed Amiri Mar 12 '12 at 16:49

score 0 · Answer 5 · answered Mar 12 '12 at 16:04

0

Use a regular expression if your splitting criteria is simple.

answered Mar 12 '12 at 16:04

Ani

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C# how to separate by paragraph?

5 Answers5