How do I capitalize first letter of first name and last name in C

Question

Is there an easy way to capitalize the first letter of a string and lower the rest of it   Is there a built in method or do I need to make my own

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CultureInfo CurrentCulture TextInfo ToTitleCase  hello world

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Hope this helps you   String fName    firstname   String lName    lastname   String capitalizedFName   CultureInfo CurrentCulture TextInfo ToTitleCase fName   String capitalizedLName   CultureInfo CurrentCulture TextInfo ToTitleCase lName

User · Answer

The most direct option is going to be to use the ToTitleCase function that is available in  NET which should take care of the name most of the time  As edg pointed out there are some names that it will not work for  but these are fairly rare so unless you are targeting a culture where such names are common it is not necessary something that you have to worry too much about   However if you are not working with a  NET langauge  then it depends on what the input looks like - if you have two separate fields for the first name and the last name then you can just capitalize the first letter lower the rest of it using substrings   firstName   firstName Substring 0  1  ToUpper     firstName Substring 1  ToLower    lastName   lastName Substring 0  1  ToUpper     lastName Substring 1  ToLower      However  if you are provided multiple names as part of the same string then you need to know how you are getting the information and split it accordingly  So if you are getting a name like  John Doe  you an split the string based upon the space character  If it is in a format such as  Doe  John  you are going to need to split it based upon the comma  However  once you have it split apart you just apply the code shown previously

User · Answer

There are some cases that CultureInfo CurrentCulture TextInfo ToTitleCase cannot handle  for example   the apostrophe     string input   CultureInfo CurrentCulture TextInfo ToTitleCase  o reilly  m grego  d angelo       input   O reilly  M grego  D angelo   A regex can also be used  b a-zA-Z  to identify the starting character of a word after a word boundary  b  then we need just to replace the match by its upper case equivalence thanks to the Regex Replace string input string pattern MatchEvaluator evaluator  method     string input    o reilly  m grego  d angelo   input   Regex Replace input ToLower       b a-zA-Z    m   gt  m Value ToUpper        input   O Reilly  M Grego  D Angelo   The regex can be tuned if needed  for instance  if we want to handle the MacDonald and McFry cases the regex becomes      lt   b   mc mac    a-zA-Z   string input    o reilly  m grego  d angelo  macdonald s  mcfry   input   Regex Replace input ToLower         lt   b   mc mac    a-zA-Z    m   gt  m Value ToUpper        input   O Reilly  M Grego  D Angelo  MacDonald S  McFry   If we need to handle more prefixes we only need to modify the group    mc mac   for example to add french prefixes du  de      mc mac du de    Finally  we can realize that this regex will also match the case MacDonald S for the last  s so we need to handle it in the regex with a negative look behind    lt   s b   At the end we have    string input    o reilly  m grego  d angelo  macdonald s  mcfry   input   Regex Replace input ToLower         lt   b   mc mac    a-zA-Z    lt   s b    m   gt  m Value ToUpper        input   O Reilly  M Grego  D Angelo  MacDonald s  McFry

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String test    HELLO HOW ARE YOU   string s   CultureInfo CurrentCulture TextInfo ToTitleCase test     The above code wont work        so put the below code  by convert to lower then apply the function  String test    HELLO HOW ARE YOU   string s   CultureInfo CurrentCulture TextInfo ToTitleCase test ToLower

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I like this way   using System Globalization      TextInfo myTi   new CultureInfo  en-Us  false  TextInfo  string raw    THIS IS ALL CAPS   string firstCapOnly   myTi ToTitleCase raw ToLower       Lifted from this MSDN article

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Like edg indicated  you ll need a more complex algorithm to handle special names  this is probably why many places force everything to upper case    Something like this untested c  should handle the simple case you requested   public string SentenceCase string input        return input 0  1  ToUpper   input Substring 1  ToLower

User · Answer

There are some cases that CultureInfo CurrentCulture TextInfo ToTitleCase cannot handle  for example   the apostrophe     string input   CultureInfo CurrentCulture TextInfo ToTitleCase  o reilly  m grego  d angelo       input   O reilly  M grego  D angelo   A regex can also be used  b a-zA-Z  to identify the starting character of a word after a word boundary  b  then we need just to replace the match by its upper case equivalence thanks to the Regex Replace string input string pattern MatchEvaluator evaluator  method     string input    o reilly  m grego  d angelo   input   Regex Replace input ToLower       b a-zA-Z    m   gt  m Value ToUpper        input   O Reilly  M Grego  D Angelo   The regex can be tuned if needed  for instance  if we want to handle the MacDonald and McFry cases the regex becomes      lt   b   mc mac    a-zA-Z   string input    o reilly  m grego  d angelo  macdonald s  mcfry   input   Regex Replace input ToLower         lt   b   mc mac    a-zA-Z    m   gt  m Value ToUpper        input   O Reilly  M Grego  D Angelo  MacDonald S  McFry   If we need to handle more prefixes we only need to modify the group    mc mac   for example to add french prefixes du  de      mc mac du de    Finally  we can realize that this regex will also match the case MacDonald S for the last  s so we need to handle it in the regex with a negative look behind    lt   s b   At the end we have    string input    o reilly  m grego  d angelo  macdonald s  mcfry   input   Regex Replace input ToLower         lt   b   mc mac    a-zA-Z    lt   s b    m   gt  m Value ToUpper        input   O Reilly  M Grego  D Angelo  MacDonald s  McFry

User · Answer

TextInfo ToTitleCase   capitalizes the first character in each token of a string  If there is no need to maintain Acronym Uppercasing  then you should include ToLower     string s    JOHN DOE   s   CultureInfo CurrentCulture TextInfo ToTitleCase s ToLower        Produces  John Doe    If CurrentCulture is unavailable  use   string s    JOHN DOE   s   new System Globalization CultureInfo  en-US   false  TextInfo ToTitleCase s ToLower       See the MSDN Link for a detailed description

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If your using vS2k8  you can use an extension method to add it to the String class   public static string FirstLetterToUpper this String input        return input   input Substring 0  1  ToUpper             input Substring 1  input Length - 1

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CultureInfo CurrentCulture TextInfo ToTitleCase  hello world

User · Answer

CultureInfo CurrentCulture TextInfo ToTitleCase   my name     returns   My Name  But the problem still exists with names like McFly as stated earlier

User · Answer

This class does the trick  You can add new prefixes to the  prefixes static string array    public static class StringExtensions           public static string ToProperCase  this string original                         if  String IsNullOrEmpty  original                     return original               string result    properNameRx Replace  original ToLower  CultureInfo CurrentCulture    HandleWord                return result                     public static string WordToProperCase  this string word                         if  String IsNullOrEmpty  word                     return word               if  word Length  gt  1                   return Char ToUpper  word 0   CultureInfo CurrentCulture     word Substring  1                 return word ToUpper  CultureInfo CurrentCulture                       private static readonly Regex  properNameRx   new Regex     b  w   b             private static readonly string    prefixes                                                               mc                                                                   private static string HandleWord  Match m                         string word   m Groups 1  Value               foreach  string prefix in  prefixes                                 if  word StartsWith  prefix  StringComparison CurrentCultureIgnoreCase                         return prefix WordToProperCase     word Substring  prefix Length   WordToProperCase                               return word WordToProperCase

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I use my own method to get this fixed   For example the phrase   hello world  hello this is the stackoverflow world   will be  Hello World  Hello This Is The Stackoverflow World    Regex  b  start of a word   w  first charactor of the word  will do the trick         lt summary gt      Makes each first letter of a word uppercase  The rest will be lowercase      lt  summary gt       lt param name  Phrase  gt  lt  param gt       lt returns gt  lt  returns gt  public static string FormatWordsWithFirstCapital string Phrase         MatchCollection Matches   Regex Matches Phrase     b  w         Phrase   Phrase ToLower         foreach  Match Match in Matches           Phrase   Phrase Remove Match Index  1  Insert Match Index  Match Value ToUpper           return Phrase

User · Answer

I like this way   using System Globalization      TextInfo myTi   new CultureInfo  en-Us  false  TextInfo  string raw    THIS IS ALL CAPS   string firstCapOnly   myTi ToTitleCase raw ToLower       Lifted from this MSDN article

User · Answer

public static string ConvertToCaptilize string input                        if   string IsNullOrEmpty input                                 string   arrUserInput   input Split                            Initialize a string builder object for the output                 StringBuilder sbOutPut   new StringBuilder                         Loop thru each character in the string array                 foreach  string str in arrUserInput                                        if   string IsNullOrEmpty str                                                 var charArray   str ToCharArray                            int k   0                          foreach  var cr in charArray                                                        char c                              c   k    0   char ToUpper cr    char ToLower cr                               sbOutPut Append c                               k                                                                          sbOutPut Append                                         return sbOutPut ToString                              return string Empty

User · Answer

TextInfo ToTitleCase   capitalizes the first character in each token of a string  If there is no need to maintain Acronym Uppercasing  then you should include ToLower     string s    JOHN DOE   s   CultureInfo CurrentCulture TextInfo ToTitleCase s ToLower        Produces  John Doe    If CurrentCulture is unavailable  use   string s    JOHN DOE   s   new System Globalization CultureInfo  en-US   false  TextInfo ToTitleCase s ToLower       See the MSDN Link for a detailed description

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To get round some of the issues problems that have ben highlighted I would suggest converting the string to lower case first and then call the ToTitleCase method  You could then use IndexOf   Mc   or IndexOf   O     to determine special cases that need more specific attention   inputString   inputString ToLower    inputString   CultureInfo CurrentCulture TextInfo ToTitleCase inputString   int indexOfMc   inputString IndexOf   Mc    if indexOfMc   gt  0       inputString Substring 0  indexOfMc   3    inputString indexOfMc   3  ToString   ToUpper     inputString Substring indexOfMc   4

User · Answer

The suggestions to use ToTitleCase won t work for strings that are all upper case  So you are gonna have to call ToUpper on the first char and ToLower on the remaining characters

User · Answer

The most direct option is going to be to use the ToTitleCase function that is available in  NET which should take care of the name most of the time  As edg pointed out there are some names that it will not work for  but these are fairly rare so unless you are targeting a culture where such names are common it is not necessary something that you have to worry too much about   However if you are not working with a  NET langauge  then it depends on what the input looks like - if you have two separate fields for the first name and the last name then you can just capitalize the first letter lower the rest of it using substrings   firstName   firstName Substring 0  1  ToUpper     firstName Substring 1  ToLower    lastName   lastName Substring 0  1  ToUpper     lastName Substring 1  ToLower      However  if you are provided multiple names as part of the same string then you need to know how you are getting the information and split it accordingly  So if you are getting a name like  John Doe  you an split the string based upon the space character  If it is in a format such as  Doe  John  you are going to need to split it based upon the comma  However  once you have it split apart you just apply the code shown previously

User · Answer

Mc and Mac are common surname prefixes throughout the US  and there are others  TextInfo ToTitleCase doesn t handle those cases and shouldn t be used for this purpose  Here s how I m doing it       public static string ToTitleCase string str                string result   str          if   string IsNullOrEmpty str                         var words   str Split                   for  int index   0  index  lt  words Length  index                                  var s   words index                   if  s Length  gt  0                                        words index    s 0  ToString   ToUpper     s Substring 1                                               result   string Join      words                     return result

User · Answer

The suggestions to use ToTitleCase won t work for strings that are all upper case  So you are gonna have to call ToUpper on the first char and ToLower on the remaining characters

User · Answer

To get round some of the issues problems that have ben highlighted I would suggest converting the string to lower case first and then call the ToTitleCase method  You could then use IndexOf   Mc   or IndexOf   O     to determine special cases that need more specific attention   inputString   inputString ToLower    inputString   CultureInfo CurrentCulture TextInfo ToTitleCase inputString   int indexOfMc   inputString IndexOf   Mc    if indexOfMc   gt  0       inputString Substring 0  indexOfMc   3    inputString indexOfMc   3  ToString   ToUpper     inputString Substring indexOfMc   4

User · Answer

Like edg indicated  you ll need a more complex algorithm to handle special names  this is probably why many places force everything to upper case    Something like this untested c  should handle the simple case you requested   public string SentenceCase string input        return input 0  1  ToUpper   input Substring 1  ToLower

User · Answer

If your using vS2k8  you can use an extension method to add it to the String class   public static string FirstLetterToUpper this String input        return input   input Substring 0  1  ToUpper             input Substring 1  input Length - 1

User · Answer

The suggestions to use ToTitleCase won t work for strings that are all upper case  So you are gonna have to call ToUpper on the first char and ToLower on the remaining characters

User · Answer

TextInfo ToTitleCase   capitalizes the first character in each token of a string  If there is no need to maintain Acronym Uppercasing  then you should include ToLower     string s    JOHN DOE   s   CultureInfo CurrentCulture TextInfo ToTitleCase s ToLower        Produces  John Doe    If CurrentCulture is unavailable  use   string s    JOHN DOE   s   new System Globalization CultureInfo  en-US   false  TextInfo ToTitleCase s ToLower       See the MSDN Link for a detailed description

User · Answer

Mc and Mac are common surname prefixes throughout the US  and there are others  TextInfo ToTitleCase doesn t handle those cases and shouldn t be used for this purpose  Here s how I m doing it       public static string ToTitleCase string str                string result   str          if   string IsNullOrEmpty str                         var words   str Split                   for  int index   0  index  lt  words Length  index                                  var s   words index                   if  s Length  gt  0                                        words index    s 0  ToString   ToUpper     s Substring 1                                               result   string Join      words                     return result

User · Answer

CultureInfo CurrentCulture TextInfo ToTitleCase   my name     returns   My Name  But the problem still exists with names like McFly as stated earlier

User · Answer

This class does the trick  You can add new prefixes to the  prefixes static string array    public static class StringExtensions           public static string ToProperCase  this string original                         if  String IsNullOrEmpty  original                     return original               string result    properNameRx Replace  original ToLower  CultureInfo CurrentCulture    HandleWord                return result                     public static string WordToProperCase  this string word                         if  String IsNullOrEmpty  word                     return word               if  word Length  gt  1                   return Char ToUpper  word 0   CultureInfo CurrentCulture     word Substring  1                 return word ToUpper  CultureInfo CurrentCulture                       private static readonly Regex  properNameRx   new Regex     b  w   b             private static readonly string    prefixes                                                               mc                                                                   private static string HandleWord  Match m                         string word   m Groups 1  Value               foreach  string prefix in  prefixes                                 if  word StartsWith  prefix  StringComparison CurrentCultureIgnoreCase                         return prefix WordToProperCase     word Substring  prefix Length   WordToProperCase                               return word WordToProperCase

User · Answer

The suggestions to use ToTitleCase won t work for strings that are all upper case  So you are gonna have to call ToUpper on the first char and ToLower on the remaining characters

User · Answer

The most direct option is going to be to use the ToTitleCase function that is available in  NET which should take care of the name most of the time  As edg pointed out there are some names that it will not work for  but these are fairly rare so unless you are targeting a culture where such names are common it is not necessary something that you have to worry too much about   However if you are not working with a  NET langauge  then it depends on what the input looks like - if you have two separate fields for the first name and the last name then you can just capitalize the first letter lower the rest of it using substrings   firstName   firstName Substring 0  1  ToUpper     firstName Substring 1  ToLower    lastName   lastName Substring 0  1  ToUpper     lastName Substring 1  ToLower      However  if you are provided multiple names as part of the same string then you need to know how you are getting the information and split it accordingly  So if you are getting a name like  John Doe  you an split the string based upon the space character  If it is in a format such as  Doe  John  you are going to need to split it based upon the comma  However  once you have it split apart you just apply the code shown previously

User · Answer

To get round some of the issues problems that have ben highlighted I would suggest converting the string to lower case first and then call the ToTitleCase method  You could then use IndexOf   Mc   or IndexOf   O     to determine special cases that need more specific attention   inputString   inputString ToLower    inputString   CultureInfo CurrentCulture TextInfo ToTitleCase inputString   int indexOfMc   inputString IndexOf   Mc    if indexOfMc   gt  0       inputString Substring 0  indexOfMc   3    inputString indexOfMc   3  ToString   ToUpper     inputString Substring indexOfMc   4

User · Answer

Mc and Mac are common surname prefixes throughout the US  and there are others  TextInfo ToTitleCase doesn t handle those cases and shouldn t be used for this purpose  Here s how I m doing it       public static string ToTitleCase string str                string result   str          if   string IsNullOrEmpty str                         var words   str Split                   for  int index   0  index  lt  words Length  index                                  var s   words index                   if  s Length  gt  0                                        words index    s 0  ToString   ToUpper     s Substring 1                                               result   string Join      words                     return result

User · Answer

The most direct option is going to be to use the ToTitleCase function that is available in  NET which should take care of the name most of the time  As edg pointed out there are some names that it will not work for  but these are fairly rare so unless you are targeting a culture where such names are common it is not necessary something that you have to worry too much about   However if you are not working with a  NET langauge  then it depends on what the input looks like - if you have two separate fields for the first name and the last name then you can just capitalize the first letter lower the rest of it using substrings   firstName   firstName Substring 0  1  ToUpper     firstName Substring 1  ToLower    lastName   lastName Substring 0  1  ToUpper     lastName Substring 1  ToLower      However  if you are provided multiple names as part of the same string then you need to know how you are getting the information and split it accordingly  So if you are getting a name like  John Doe  you an split the string based upon the space character  If it is in a format such as  Doe  John  you are going to need to split it based upon the comma  However  once you have it split apart you just apply the code shown previously

User · Answer

Like edg indicated  you ll need a more complex algorithm to handle special names  this is probably why many places force everything to upper case    Something like this untested c  should handle the simple case you requested   public string SentenceCase string input        return input 0  1  ToUpper   input Substring 1  ToLower

User · Answer

CultureInfo CurrentCulture TextInfo ToTitleCase   my name     returns   My Name  But the problem still exists with names like McFly as stated earlier

User · Answer

ToTitleCase   should work for you   http   support microsoft com kb 312890

User · Answer

To get round some of the issues problems that have ben highlighted I would suggest converting the string to lower case first and then call the ToTitleCase method  You could then use IndexOf   Mc   or IndexOf   O     to determine special cases that need more specific attention   inputString   inputString ToLower    inputString   CultureInfo CurrentCulture TextInfo ToTitleCase inputString   int indexOfMc   inputString IndexOf   Mc    if indexOfMc   gt  0       inputString Substring 0  indexOfMc   3    inputString indexOfMc   3  ToString   ToUpper     inputString Substring indexOfMc   4

User · Answer

ToTitleCase   should work for you   http   support microsoft com kb 312890

User · Answer

CultureInfo CurrentCulture TextInfo ToTitleCase   my name     returns   My Name  But the problem still exists with names like McFly as stated earlier

User · Answer

Mc and Mac are common surname prefixes throughout the US  and there are others  TextInfo ToTitleCase doesn t handle those cases and shouldn t be used for this purpose  Here s how I m doing it       public static string ToTitleCase string str                string result   str          if   string IsNullOrEmpty str                         var words   str Split                   for  int index   0  index  lt  words Length  index                                  var s   words index                   if  s Length  gt  0                                        words index    s 0  ToString   ToUpper     s Substring 1                                               result   string Join      words                     return result

User · Answer

Like edg indicated  you ll need a more complex algorithm to handle special names  this is probably why many places force everything to upper case    Something like this untested c  should handle the simple case you requested   public string SentenceCase string input        return input 0  1  ToUpper   input Substring 1  ToLower

User · Answer

ToTitleCase   should work for you   http   support microsoft com kb 312890

User · Answer

Hope this helps you   String fName    firstname   String lName    lastname   String capitalizedFName   CultureInfo CurrentCulture TextInfo ToTitleCase fName   String capitalizedLName   CultureInfo CurrentCulture TextInfo ToTitleCase lName

User · Answer

CultureInfo CurrentCulture TextInfo ToTitleCase  hello world

User · Answer

This class does the trick  You can add new prefixes to the  prefixes static string array    public static class StringExtensions           public static string ToProperCase  this string original                         if  String IsNullOrEmpty  original                     return original               string result    properNameRx Replace  original ToLower  CultureInfo CurrentCulture    HandleWord                return result                     public static string WordToProperCase  this string word                         if  String IsNullOrEmpty  word                     return word               if  word Length  gt  1                   return Char ToUpper  word 0   CultureInfo CurrentCulture     word Substring  1                 return word ToUpper  CultureInfo CurrentCulture                       private static readonly Regex  properNameRx   new Regex     b  w   b             private static readonly string    prefixes                                                               mc                                                                   private static string HandleWord  Match m                         string word   m Groups 1  Value               foreach  string prefix in  prefixes                                 if  word StartsWith  prefix  StringComparison CurrentCultureIgnoreCase                         return prefix WordToProperCase     word Substring  prefix Length   WordToProperCase                               return word WordToProperCase

User · Answer

If your using vS2k8  you can use an extension method to add it to the String class   public static string FirstLetterToUpper this String input        return input   input Substring 0  1  ToUpper             input Substring 1  input Length - 1

User · Answer

public static string ConvertToCaptilize string input                        if   string IsNullOrEmpty input                                 string   arrUserInput   input Split                            Initialize a string builder object for the output                 StringBuilder sbOutPut   new StringBuilder                         Loop thru each character in the string array                 foreach  string str in arrUserInput                                        if   string IsNullOrEmpty str                                                 var charArray   str ToCharArray                            int k   0                          foreach  var cr in charArray                                                        char c                              c   k    0   char ToUpper cr    char ToLower cr                               sbOutPut Append c                               k                                                                          sbOutPut Append                                         return sbOutPut ToString                              return string Empty

User · Answer

TextInfo ToTitleCase   capitalizes the first character in each token of a string  If there is no need to maintain Acronym Uppercasing  then you should include ToLower     string s    JOHN DOE   s   CultureInfo CurrentCulture TextInfo ToTitleCase s ToLower        Produces  John Doe    If CurrentCulture is unavailable  use   string s    JOHN DOE   s   new System Globalization CultureInfo  en-US   false  TextInfo ToTitleCase s ToLower       See the MSDN Link for a detailed description

User · Answer

CultureInfo CurrentCulture TextInfo ToTitleCase  hello world

User · Answer

I use my own method to get this fixed   For example the phrase   hello world  hello this is the stackoverflow world   will be  Hello World  Hello This Is The Stackoverflow World    Regex  b  start of a word   w  first charactor of the word  will do the trick         lt summary gt      Makes each first letter of a word uppercase  The rest will be lowercase      lt  summary gt       lt param name  Phrase  gt  lt  param gt       lt returns gt  lt  returns gt  public static string FormatWordsWithFirstCapital string Phrase         MatchCollection Matches   Regex Matches Phrase     b  w         Phrase   Phrase ToLower         foreach  Match Match in Matches           Phrase   Phrase Remove Match Index  1  Insert Match Index  Match Value ToUpper           return Phrase

User · Answer

String test    HELLO HOW ARE YOU   string s   CultureInfo CurrentCulture TextInfo ToTitleCase test     The above code wont work        so put the below code  by convert to lower then apply the function  String test    HELLO HOW ARE YOU   string s   CultureInfo CurrentCulture TextInfo ToTitleCase test ToLower

User · Answer

ToTitleCase   should work for you   http   support microsoft com kb 312890

User · Answer

This class does the trick  You can add new prefixes to the  prefixes static string array    public static class StringExtensions           public static string ToProperCase  this string original                         if  String IsNullOrEmpty  original                     return original               string result    properNameRx Replace  original ToLower  CultureInfo CurrentCulture    HandleWord                return result                     public static string WordToProperCase  this string word                         if  String IsNullOrEmpty  word                     return word               if  word Length  gt  1                   return Char ToUpper  word 0   CultureInfo CurrentCulture     word Substring  1                 return word ToUpper  CultureInfo CurrentCulture                       private static readonly Regex  properNameRx   new Regex     b  w   b             private static readonly string    prefixes                                                               mc                                                                   private static string HandleWord  Match m                         string word   m Groups 1  Value               foreach  string prefix in  prefixes                                 if  word StartsWith  prefix  StringComparison CurrentCultureIgnoreCase                         return prefix WordToProperCase     word Substring  prefix Length   WordToProperCase                               return word WordToProperCase

User · Answer

If your using vS2k8  you can use an extension method to add it to the String class   public static string FirstLetterToUpper this String input        return input   input Substring 0  1  ToUpper             input Substring 1  input Length - 1

[c#] How do I capitalize first letter of first name and last name in C#?

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