Replace Line Breaks in a String C

Question

How can I replace Line Breaks within a string in C

User · Answer

Use the  Replace   method  Line Replace   n    whatever you want to replace with

User · Answer

The solutions posted so far either only replace Environment NewLine or they fail if the replacement string contains line breaks because they call string Replace multiple times   Here s a solution that uses a regular expression to make all three replacements in just one pass over the string  This means that the replacement string can safely contain line breaks   string result   Regex Replace input     r n   n   replacementString

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As new line can be delimited by  n   r and  r n  first we   ll replace  r and  r n with  n  and only then split data string    The following lines should go to the parseCSV method   function parseCSV data          alert data         replace UNIX new lines     data   data replace   r n g    n          replace MAC new lines     data   data replace   r g    n          split into rows     var rows   data split   n

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Don t forget that replace doesn t do the replacement in the string  but returns a new string with the characters replaced   The following will remove line breaks  not replace them   I d use  Brian R  Bondy s method if replacing them with something else  perhaps wrapped as an extension method   Remember to check for null values first before calling Replace or the extension methods provided   string line        line   line Replace    r       Replace    n           As extension methods   public static class StringExtensions      public static string RemoveLineBreaks  this string lines              return lines Replace    r       Replace    n                  public static string ReplaceLineBreaks  this string lines  string replacement              return lines Replace    r n   replacement                      Replace    r   replacement                      Replace    n   replacement

User · Answer

As new line can be delimited by  n   r and  r n  first we   ll replace  r and  r n with  n  and only then split data string    The following lines should go to the parseCSV method   function parseCSV data          alert data         replace UNIX new lines     data   data replace   r n g    n          replace MAC new lines     data   data replace   r g    n          split into rows     var rows   data split   n

User · Answer

I would use Environment Newline when I wanted to insert a newline for a string  but not to remove all newlines from a string   Depending on your platform you can have different types of  newlines  but even inside the same platform often different types of newlines are used  In particular when dealing with file formats and protocols   string ReplaceNewlines string blockOfText  string replaceWith        return blockOfText Replace   r n   replaceWith  Replace   n   replaceWith  Replace   r   replaceWith

User · Answer

If your code is supposed to run in different environments  I would consider using the Environment NewLine constant  since it is specifically the newline used in the specific environment   line   line Replace Environment NewLine   newLineReplacement      However  if you get the text from a file originating on another system  this might not be the correct answer  and you should replace with whatever newline constant is used on the other system  It will typically be  n or  r n

User · Answer

If your code is supposed to run in different environments  I would consider using the Environment NewLine constant  since it is specifically the newline used in the specific environment   line   line Replace Environment NewLine   newLineReplacement      However  if you get the text from a file originating on another system  this might not be the correct answer  and you should replace with whatever newline constant is used on the other system  It will typically be  n or  r n

User · Answer

Another option is to create a StringReader over the string in question  On the reader  do  ReadLine   in a loop  Then you have the lines separated  no matter what  consistent or inconsistent  separators they had  With that  you can proceed as you wish  one possibility is to use a StringBuilder and call  AppendLine on it   The advantage is  you let the framework decide what constitutes a  line break

User · Answer

if you want to  clean  the new lines   flamebaud comment using regex     r n    is the best choice   using System  using System Text RegularExpressions   class MainClass     public static void Main  string   args        string str    AAA r nBBB r n r n r nCCC r r rDDD n n nEEE        Console WriteLine  str Replace System Environment NewLine   -            Result      AAA     -BBB     -     -     -CCC       DDD---EEE            Console WriteLine  Regex Replace str     r n   n    -            Result         AAA-BBB---CCC---DDD---EEE      Console WriteLine  Regex Replace str      r n      -            Result         AAA-BBB-CCC-DDD-EEE

User · Answer

I would use Environment Newline when I wanted to insert a newline for a string  but not to remove all newlines from a string   Depending on your platform you can have different types of  newlines  but even inside the same platform often different types of newlines are used  In particular when dealing with file formats and protocols   string ReplaceNewlines string blockOfText  string replaceWith        return blockOfText Replace   r n   replaceWith  Replace   n   replaceWith  Replace   r   replaceWith

User · Answer

To make sure all possible ways of line breaks  Windows  Mac and Unix  are replaced you should use   string Replace   r n     n   Replace   r     n   Replace   n    replacement      and in this order  to not to make extra line breaks  when you find some combination of line ending chars

User · Answer

I needed to replace the  r n with an actual carriage return and line feed and replace  t with an actual tab   So I came up with the following   public string Transform string data        string result   data      char cr    char 13      char lf    char 10      char tab    char 9       result   result Replace    r   cr ToString         result   result Replace    n   lf ToString         result   result Replace    t   tab ToString          return result

User · Answer

Use replace with Environment NewLine  myString   myString Replace System Environment NewLine   replacement text      add a line terminating     As mentioned in other posts  if the string comes from another environment  OS  then you d need to replace that particular environments implementation of new line control characters

User · Answer

Don t forget that replace doesn t do the replacement in the string  but returns a new string with the characters replaced   The following will remove line breaks  not replace them   I d use  Brian R  Bondy s method if replacing them with something else  perhaps wrapped as an extension method   Remember to check for null values first before calling Replace or the extension methods provided   string line        line   line Replace    r       Replace    n           As extension methods   public static class StringExtensions      public static string RemoveLineBreaks  this string lines              return lines Replace    r       Replace    n                  public static string ReplaceLineBreaks  this string lines  string replacement              return lines Replace    r n   replacement                      Replace    r   replacement                      Replace    n   replacement

User · Answer

Best way to replace linebreaks safely is  yourString Replace   r n    n     handling windows linebreaks  Replace   r    n                 handling mac linebreaks   that should produce a string with only  n  eg linefeed  as linebreaks  this code is usefull to fix mixed linebreaks too

User · Answer

Use the  Replace   method  Line Replace   n    whatever you want to replace with

User · Answer

If your code is supposed to run in different environments  I would consider using the Environment NewLine constant  since it is specifically the newline used in the specific environment   line   line Replace Environment NewLine   newLineReplacement      However  if you get the text from a file originating on another system  this might not be the correct answer  and you should replace with whatever newline constant is used on the other system  It will typically be  n or  r n

User · Answer

The solutions posted so far either only replace Environment NewLine or they fail if the replacement string contains line breaks because they call string Replace multiple times   Here s a solution that uses a regular expression to make all three replacements in just one pass over the string  This means that the replacement string can safely contain line breaks   string result   Regex Replace input     r n   n   replacementString

User · Answer

Use replace with Environment NewLine  myString   myString Replace System Environment NewLine   replacement text      add a line terminating     As mentioned in other posts  if the string comes from another environment  OS  then you d need to replace that particular environments implementation of new line control characters

User · Answer

If your code is supposed to run in different environments  I would consider using the Environment NewLine constant  since it is specifically the newline used in the specific environment   line   line Replace Environment NewLine   newLineReplacement      However  if you get the text from a file originating on another system  this might not be the correct answer  and you should replace with whatever newline constant is used on the other system  It will typically be  n or  r n

User · Answer

var answer   Regex Replace value     n  r     replacementString

User · Answer

To extend The Anyi 9 s answer  you should also be aware of the different types of line break in general use   Dependent on where your file originated  you may want to look at making sure you catch all the alternatives     string replaceWith       string removedBreaks   Line Replace   r n   replaceWith  Replace   n   replaceWith  Replace   r   replaceWith     should get you going

User · Answer

Use replace with Environment NewLine  myString   myString Replace System Environment NewLine   replacement text      add a line terminating     As mentioned in other posts  if the string comes from another environment  OS  then you d need to replace that particular environments implementation of new line control characters

User · Answer

Don t forget that replace doesn t do the replacement in the string  but returns a new string with the characters replaced   The following will remove line breaks  not replace them   I d use  Brian R  Bondy s method if replacing them with something else  perhaps wrapped as an extension method   Remember to check for null values first before calling Replace or the extension methods provided   string line        line   line Replace    r       Replace    n           As extension methods   public static class StringExtensions      public static string RemoveLineBreaks  this string lines              return lines Replace    r       Replace    n                  public static string ReplaceLineBreaks  this string lines  string replacement              return lines Replace    r n   replacement                      Replace    r   replacement                      Replace    n   replacement

User · Answer

Don t forget that replace doesn t do the replacement in the string  but returns a new string with the characters replaced   The following will remove line breaks  not replace them   I d use  Brian R  Bondy s method if replacing them with something else  perhaps wrapped as an extension method   Remember to check for null values first before calling Replace or the extension methods provided   string line        line   line Replace    r       Replace    n           As extension methods   public static class StringExtensions      public static string RemoveLineBreaks  this string lines              return lines Replace    r       Replace    n                  public static string ReplaceLineBreaks  this string lines  string replacement              return lines Replace    r n   replacement                      Replace    r   replacement                      Replace    n   replacement

User · Answer

To make sure all possible ways of line breaks  Windows  Mac and Unix  are replaced you should use   string Replace   r n     n   Replace   r     n   Replace   n    replacement      and in this order  to not to make extra line breaks  when you find some combination of line ending chars

User · Answer

Why not both   string ReplacementString        Regex Replace strin Replace System Environment NewLine  ReplacementString       r n   n    ReplacementString     Note  Replace strin with the name of your input string

User · Answer

To extend The Anyi 9 s answer  you should also be aware of the different types of line break in general use   Dependent on where your file originated  you may want to look at making sure you catch all the alternatives     string replaceWith       string removedBreaks   Line Replace   r n   replaceWith  Replace   n   replaceWith  Replace   r   replaceWith     should get you going

User · Answer

Use the  Replace   method  Line Replace   n    whatever you want to replace with

User · Answer

Use the  Replace   method  Line Replace   n    whatever you want to replace with

User · Answer

To extend The Anyi 9 s answer  you should also be aware of the different types of line break in general use   Dependent on where your file originated  you may want to look at making sure you catch all the alternatives     string replaceWith       string removedBreaks   Line Replace   r n   replaceWith  Replace   n   replaceWith  Replace   r   replaceWith     should get you going

User · Answer

To extend The Anyi 9 s answer  you should also be aware of the different types of line break in general use   Dependent on where your file originated  you may want to look at making sure you catch all the alternatives     string replaceWith       string removedBreaks   Line Replace   r n   replaceWith  Replace   n   replaceWith  Replace   r   replaceWith     should get you going

User · Answer

Another option is to create a StringReader over the string in question  On the reader  do  ReadLine   in a loop  Then you have the lines separated  no matter what  consistent or inconsistent  separators they had  With that  you can proceed as you wish  one possibility is to use a StringBuilder and call  AppendLine on it   The advantage is  you let the framework decide what constitutes a  line break

User · Answer

If you want to replace only the newlines   var input     sdfhlu  r n sdkuidfs r ndfgdgfd   var match              var replaceWith        Console WriteLine  input      input   var x   Regex Replace input Replace    n   replaceWith  Replace    r   replaceWith   match  replaceWith   Console WriteLine  output      x     If you want to replace newlines  tabs and white spaces   var input     sdfhlusdkuidfs r ndfgdgfd   var match        s     var replaceWith       Console WriteLine  input      input   var x   Regex Replace input  match  replaceWith   Console WriteLine  output      x

User · Answer

var answer   Regex Replace value     n  r     replacementString

User · Answer

If you want to replace only the newlines   var input     sdfhlu  r n sdkuidfs r ndfgdgfd   var match              var replaceWith        Console WriteLine  input      input   var x   Regex Replace input Replace    n   replaceWith  Replace    r   replaceWith   match  replaceWith   Console WriteLine  output      x     If you want to replace newlines  tabs and white spaces   var input     sdfhlusdkuidfs r ndfgdgfd   var match        s     var replaceWith       Console WriteLine  input      input   var x   Regex Replace input  match  replaceWith   Console WriteLine  output      x

User · Answer

string s   Regex Replace source string    n     r n      or  string s   Regex Replace source string    r n     n      depending on which way you want to go   Hopes it helps

User · Answer

if you want to  clean  the new lines   flamebaud comment using regex     r n    is the best choice   using System  using System Text RegularExpressions   class MainClass     public static void Main  string   args        string str    AAA r nBBB r n r n r nCCC r r rDDD n n nEEE        Console WriteLine  str Replace System Environment NewLine   -            Result      AAA     -BBB     -     -     -CCC       DDD---EEE            Console WriteLine  Regex Replace str     r n   n    -            Result         AAA-BBB---CCC---DDD---EEE      Console WriteLine  Regex Replace str      r n      -            Result         AAA-BBB-CCC-DDD-EEE

User · Answer

I would use Environment Newline when I wanted to insert a newline for a string  but not to remove all newlines from a string   Depending on your platform you can have different types of  newlines  but even inside the same platform often different types of newlines are used  In particular when dealing with file formats and protocols   string ReplaceNewlines string blockOfText  string replaceWith        return blockOfText Replace   r n   replaceWith  Replace   n   replaceWith  Replace   r   replaceWith

User · Answer

string s   Regex Replace source string    n     r n      or  string s   Regex Replace source string    r n     n      depending on which way you want to go   Hopes it helps

User · Answer

Best way to replace linebreaks safely is  yourString Replace   r n    n     handling windows linebreaks  Replace   r    n                 handling mac linebreaks   that should produce a string with only  n  eg linefeed  as linebreaks  this code is usefull to fix mixed linebreaks too

User · Answer

Use replace with Environment NewLine  myString   myString Replace System Environment NewLine   replacement text      add a line terminating     As mentioned in other posts  if the string comes from another environment  OS  then you d need to replace that particular environments implementation of new line control characters

User · Answer

I needed to replace the  r n with an actual carriage return and line feed and replace  t with an actual tab   So I came up with the following   public string Transform string data        string result   data      char cr    char 13      char lf    char 10      char tab    char 9       result   result Replace    r   cr ToString         result   result Replace    n   lf ToString         result   result Replace    t   tab ToString          return result

User · Answer

I would use Environment Newline when I wanted to insert a newline for a string  but not to remove all newlines from a string   Depending on your platform you can have different types of  newlines  but even inside the same platform often different types of newlines are used  In particular when dealing with file formats and protocols   string ReplaceNewlines string blockOfText  string replaceWith        return blockOfText Replace   r n   replaceWith  Replace   n   replaceWith  Replace   r   replaceWith

User · Answer

Why not both   string ReplacementString        Regex Replace strin Replace System Environment NewLine  ReplacementString       r n   n    ReplacementString     Note  Replace strin with the name of your input string

[c#] Replace Line Breaks in a String C#

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