String Manipulation C# - BreakLine in Text

Question

I need a help with my code, I'm trying to format a text in a string setting breaklines before the dates formats.

Example:

string formulario = "21/02/2011 - 15:02 - Albert Einsten - Won the lottery 21/11/2012 - 16:14 - Nicollas Tesla - Lost his keys. Keys Id: 0666793 ";

I need my string to be in the next format:

21/02/2011 - 15:02 - Albert Einsten - Won the lottery

21/11/2012 - 16:14 - Nicollas Tesla - Lost his keys. Keys Id: 0666793

Use a line break \n Or you can use @ before your string to conserve whatever line breaks you include in the string — Matt Burland
– Matt Burland, Commented Jun 6, 2018 at 15:02
Is the string formulario all one line like that? Or is there new line characters in it? — maccettura
– maccettura, Commented Jun 6, 2018 at 15:03
@awh112 your edit might not be accurate. The OP included a new line break in the original example and your edit removes that. — maccettura
– maccettura, Commented Jun 6, 2018 at 15:09

ataraxia · Accepted Answer · 2019-08-23 17:34:23Z

1

You need to use a line break \n or even better System.Environment.NewLine

edited Aug 23, 2019 at 17:34

answered Jun 6, 2018 at 15:03

ataraxia

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1 Comment

Mark Baijens Over a year ago

Environment.NewLine is better

Liquid Core · Accepted Answer · 2018-06-06 15:11:45Z

0

Environment.NewLine is your friend. It's accurate for every environment as the framework chooses the appropriate line ending automatically and you can assign it to a string to use it in a faster way if you don't like its verbosity.

Like

string nl = Environment.NewLine;
string phrase = "now we go to a new line" + nl;

or if you use C# 6 at least you can use syntactic sugar with string interpolation:

 string nl = Environment.NewLine;
 string phrase2 = $"now we go to a new line{nl}And this is the new line{nl}And this is another one";

(or put Environment.NewLine directly inside brackets if you don't like the variable)

answered Jun 6, 2018 at 15:11

Liquid Core

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2 Comments

Liam Over a year ago

string nl = Environment.NewLine; feels like an unnecessary memory aloocation

Liquid Core Over a year ago

It all depends on your tastes. I Specified that you can put directly Environment.NewLine without the variable allocation. I prefer to allocate it because it's more readable when it comes to use it many times in the code

Liam · Accepted Answer · 2018-06-06 15:13:41Z

0

Just use a verbatim string:

string formulario = @"21/02/2011 - 15:02 - Albert Einsten - Won the lottery 

21/11/2012 - 16:14 - Nicollas Tesla - Lost his keys. Keys Id: 0666793";

Or format your string using Environment.NewLine:

//string.Format will replace {0} with the result of Environment.NewLine
string formulario = string.Format("21/02/2011 - 15:02 - Albert Einsten - Won the lottery{0}{0}21/11/2012 - 16:14 - Nicollas Tesla - Lost his keys. Keys Id: 0666793", Environment.NewLine);

Or you can use C# 6 $ strings (shorthand for the above)

string formulario = $"21/02/2011 - 15:02 - Albert Einsten - Won the lottery{Environment.NewLine}{Environment.NewLine}21/11/2012 - 16:14 - Nicollas Tesla - Lost his keys. Keys Id: 0666793";

edited Jun 6, 2018 at 15:13

answered Jun 6, 2018 at 15:08

Liam

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3 Comments

DontThinkJustGo Over a year ago

using the newest c#: $"21/02/2011 - 15:02 - Albert Einsten - Won the lottery{Environment.NewLine}{Environment.NewLine}21/11/2012 - 16:14 - Nicollas Tesla - Lost his keys. Keys Id: 0666793"

Liam Over a year ago

Yeah, they're not in my everday usage yet, added to answer, thanks @DontThinkJustGo

Kyle Burns Over a year ago

There are very few cases where string interpolation shouldn't be in common usage. The language feature is now almost 3 years old and is supported on Visual Studio 15 forward. For the most part, developers not using it at this point are simply falling back on what they've always done instead of allowing language features added to help produce more readable code do their job

Berserker · Accepted Answer · 2018-06-06 16:46:03Z

0

I found a Solution using Regex

String pattern  = @" ([\d]{2}/[\d]{2}/[\d]{4})";
String Formulario = "21/02/2011 - 15:02 - Albert Einsten - Won the lottery 21/11/2012 - 16:14 - Nicollas Tesla - Lost his keys. Keys Id: 0666793 ";

formulario = Regex.Replace(formulario, pattern, Environment.NewLine + "$&");

Console.WriteLine(formulario.Replace("\n ", "\n"));

answered Jun 6, 2018 at 16:46

Berserker

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