Convert all first letter to upper case rest lower for each word

Question

I have a string of text  about 5-6 words mostly  that I need to convert   Currently the text looks like   THIS IS MY TEXT RIGHT NOW   I want to convert it to   This Is My Text Right Now   I can loop through my collection of strings  but not sure how to go about performing this text modification

User · Answer

When building big tables speed is a concern so Jamie Dixon's second function is best, but it doesn't completely work as is...

It fails to take all of the letters to lowercase, and it only capitalizes the first letter of the string, not the first letter of each word in the string... the below option fixes both issues:

    public string UppercaseFirstEach(string s)
    {
        char[] a = s.ToLower().ToCharArray();

        for (int i = 0; i < a.Count(); i++ )
        {
            a[i] = i == 0 || a[i-1] == ' ' ? char.ToUpper(a[i]) : a[i];

        }

        return new string(a);
    }

Although at this point, whether this is still the fastest option is uncertain, the Regex solution provided by George Mauer might be faster... someone who cares enough should test it.

User · Answer

jspcal s answer as a string extension   Program cs  class Program       static void Main string   args                var myText    MYTEXT           Console WriteLine myText ToTitleCase       Mytext           StringExtensions cs  using System  public static class StringExtensions        public static string ToTitleCase this string str                if  str    null              return null           return System Threading Thread CurrentThread CurrentCulture TextInfo ToTitleCase str ToLower

User · Answer

I don t know if the solution below is more or less efficient than jspcal s answer  but I m pretty sure it requires less object creation than Jamie s and George s   string s    THIS IS MY TEXT RIGHT NOW   StringBuilder sb   new StringBuilder s Length   bool capitalize   true  foreach  char c in s        sb Append capitalize   Char ToUpper c    Char ToLower c        capitalize    Char IsLetter c     return sb ToString

User · Answer

string s    THIS IS MY TEXT RIGHT NOW    s   System Threading Thread CurrentThread CurrentCulture TextInfo ToTitleCase s ToLower

User · Answer

If you re using on a web page  you can also use CSS   style  text-transform capitalize

User · Answer

Untested but something like this should work   var phrase    THIS IS MY TEXT RIGHT NOW   var rx   new System Text RegularExpressions Regex      lt   w  w    var newString   rx Replace phrase new MatchEvaluator m  gt m Value ToLowerInvariant        Essentially it says  preform a regex match on all occurrences of an alphanumeric character that follows another alphanumeric character and then replace it with a lowercase version of itself

User · Answer

Try this technique  It returns the desired result  CultureInfo CurrentCulture TextInfo ToTitleCase str ToLower       And don t forget to use System Globalization

User · Answer

There s a couple of ways to go about converting the first char of a string to upper case   The first way is to create a method that simply caps the first char and appends the rest of the string using a substring   public string UppercaseFirst string s                return char ToUpper s 0     s Substring 1           The second way  which is slightly faster  is to split the string into a char array and then re-build the string   public string UppercaseFirst string s                char   a   s ToCharArray            a 0    char ToUpper a 0            return new string a

User · Answer

One of the possible solution you might be interested in  Traversing an array of chars from right to left and vise versa in one loop   public static string WordsToCapitalLetter string value                if  string IsNullOrWhiteSpace value                         throw new ArgumentException  value                       int inputValueCharLength   value Length          var valueAsCharArray   value ToCharArray             int min   0          int max   inputValueCharLength - 1           while  max  gt  min                        char left   value min               char previousLeft    min    0    left   value min - 1                char right   value max               char nextRight    max    inputValueCharLength - 1    right   value max - 1                if  char IsLetter left   amp  amp   char IsUpper left   amp  amp  char IsWhiteSpace previousLeft                                 valueAsCharArray min    char ToUpper left                              if  char IsLetter right   amp  amp   char IsUpper right   amp  amp  char IsWhiteSpace nextRight                                 valueAsCharArray max    char ToUpper right                              min                max--                     return new string valueAsCharArray

User · Answer

In addition to first answer  remember to change string selectionstart index to the end of the word or you will get reverse order of letters in the string   s SelectionStart s Length

User · Answer

I probably prefer to invoke the ToTitleCase from CultureInfo  System Globalization  than Thread CurrentThread  System Threading   string s    THIS IS MY TEXT RIGHT NOW   s   CultureInfo CurrentCulture TextInfo ToTitleCase s ToLower       but it should be the same as jspcal solution  EDIT  Actually those solutions are not the same  CurrentThread --calls--  CultureInfo     System Threading Thread CurrentThread CurrentCulture  string s    THIS IS MY TEXT RIGHT NOW   s   System Threading Thread CurrentThread CurrentCulture TextInfo ToTitleCase s ToLower      IL 0000   ldstr        THIS IS MY TEXT RIGHT NOW  IL 0005   stloc 0        s IL 0006   call        System Threading Thread get CurrentThread IL 000B   callvirt    System Threading Thread get CurrentCulture IL 0010   callvirt    System Globalization CultureInfo get TextInfo IL 0015   ldloc 0        s IL 0016   callvirt    System String ToLower IL 001B   callvirt    System Globalization TextInfo ToTitleCase IL 0020   stloc 0        s     System Globalization CultureInfo CurrentCulture  string s    THIS IS MY TEXT RIGHT NOW   s   System Globalization CultureInfo CurrentCulture TextInfo ToTitleCase s ToLower      IL 0000   ldstr        THIS IS MY TEXT RIGHT NOW  IL 0005   stloc 0        s IL 0006   call        System Globalization CultureInfo get CurrentCulture IL 000B   callvirt    System Globalization CultureInfo get TextInfo IL 0010   ldloc 0        s IL 0011   callvirt    System String ToLower IL 0016   callvirt    System Globalization TextInfo ToTitleCase IL 001B   stloc 0        s     References    http   msdn microsoft com library kx54z3k7 v VS 80  aspx http   msdn microsoft com library 66w76es3 v VS 80  aspx

[c#] Convert all first letter to upper case, rest lower for each word

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