Trim last character from a string

Question

I have a string say   Hello  world      I want to do a trim or a remove to take out the   off world but not off Hello

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Very easy and simple      str   str Remove  str Length - 1

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string helloOriginal    Hello  World    string newString   helloOriginal Substring 0 helloOriginal LastIndexOf

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The another example of trimming last character from a string   string outputText   inputText Remove inputText Length - 1  1     You can put it into an extension method and prevent it from null string  etc

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Slightly modified version of  Damian Leszczynski - Vash that will make sure that only a specific character will be removed    public static class StringExtensions       public static string TrimLastCharacter this string str  char character                if  string IsNullOrEmpty str     str str Length - 1     character                        return str                    return str Substring 0  str Length - 1

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I took the path of writing an extension using the TrimEnd just because I was already using it inline and was happy with it    i e    static class Extensions           public static string RemoveLastChars this String text  string suffix                                    char   trailingChars   suffix ToCharArray                 if  suffix    null  return text              return text TrimEnd trailingChars                  Make sure you include the namespace in your classes using the static class  P and usage is   string  ManagedLocationsOLAP   string Empty   ManagedLocationsOLAP    validManagedLocationIDs RemoveLastChars

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String withoutLast   yourString Substring 0  yourString Length - 1

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Hello  world   TrimEnd         read more   EDIT   What I ve noticed in this type of questions that quite everyone suggest to remove the last char of given string  But this does not fulfill the definition of Trim method      Trim - Removes all occurrences of   white space characters from the   beginning and end of this  instance    MSDN-Trim  Under this definition removing only last character from string is bad solution    So if we want to  Trim last character from string  we should do something like this   Example as extension method   public static class MyExtensions     public static string TrimLastCharacter this String str           if String IsNullOrEmpty str            return str         else           return str TrimEnd str str Length - 1                   Note if you want to remove all characters of the same value i e      the method above removes all existences of     from the end of the string  but if you want to remove only the last character you should use this    else   return str Remove str Length - 1

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you could also use this   public static class Extensions             public static string RemovePrefix this string o  string prefix                        if  prefix    null  return o              return  o StartsWith prefix    o   o Remove 0  prefix Length                      public static string RemoveSuffix this string o  string suffix                        if suffix    null  return o              return  o EndsWith suffix    o   o Remove o Length - suffix Length  suffix Length

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If you want to remove the     character from a specific expression  world  in your case   then you can use this regular expression  string input    Hello  world     string output   Regex Replace input    world       1   RegexOptions Multiline   RegexOptions Singleline       result   Hello  world    the  1 special character contains all the matching  world  expressions  and it is used to replace the original  world   expression

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In  NET 5   C  8  You can write the code marked as the answer as  public static class StringExtensions       public static string TrimLastCharacters this string str    gt  string IsNullOrEmpty str    str   str TrimEnd str  1       However  as mentioned in the answer  this removes all occurrences of that last character  If you only want to remove the last character you should instead do      public static string RemoveLastCharacter this string str    gt  string IsNullOrEmpty str    str   str    1    A quick explanation for the new stuff in C  8  The   is called the  quot index from end operator quot   The    is called the  quot range operator quot    1 is a shortcut for arr length - 1  You can get all items after the first character of an array with arr 1    or all items before the last with arr    1   These are just a few quick examples  For more information  see https   docs microsoft com en-us dotnet csharp whats-new csharp-8   quot Indices and ranges quot  section

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string s1    Hello  world   string s2   s1 Substring 0  s1 Length - 1   Console WriteLine s1   Console WriteLine s2

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string s1    Hello  world            string s2   s1 Trim

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if  yourString Length  gt  1      withoutLast   yourString Substring 0  yourString Length - 1     or  if  yourString Length  gt  1      withoutLast   yourString TrimEnd   Substring 0  yourString Length - 1        in case you want to remove a non-whitespace character from the end

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Try this   return   str  Remove str Length-1

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An example Extension class to simplify this  -  internal static class String       public static string TrimEndsCharacter this string target  char character    gt  target  TrimLeadingCharacter character  TrimTrailingCharacter character       public static string TrimLeadingCharacter this string target  char character    gt  Match target  Substring 0  1   character    target Remove 0 1    target      public static string TrimTrailingCharacter this string target  char character    gt  Match target  Substring target Length - 1  1   character    target Substring 0  target Length - 1    target       private static bool Match string value  char character    gt   string IsNullOrEmpty value   amp  amp  value 0     character      Usage     Something   TrimLeadingCharacter  X       Result   Something    No Change    Something   TrimTrailingCharacter  S       Result   Something    No Change    Something   TrimEndsCharacter  g       Result   Something    No Change     Something   TrimLeadingCharacter          Result  Something    1st Character removed    Something   TrimTrailingCharacter          Result   Something   Last Character removed    Something   TrimEndsCharacter          Result  Something    End Characters removed      Something    TrimLeadingCharacter          Result   Something     Only 1st instance removed     Something    TrimTrailingCharacter          Result    Something    Only Last instance removed     Something    TrimEndsCharacter          Result   Something     Only End instances removed

[c#] Trim last character from a string

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