How to extend C# built-in types, like String?

by

Since you cannot extend string.Trim(). You could make an Extension method as described here that trims and reduces whitespace.

namespace CustomExtensions
{
    //Extension methods must be defined in a static class
    public static class StringExtension
    {
        // This is the extension method.
        // The first parameter takes the "this" modifier
        // and specifies the type for which the method is defined.
        public static string TrimAndReduce(this string str)
        {
            return ConvertWhitespacesToSingleSpaces(str).Trim();
        }

        public static string ConvertWhitespacesToSingleSpaces(this string value)
        {
            return Regex.Replace(value, @"\s+", " ");
        }
    }
}

You can use it like so

using CustomExtensions;

string text = "  I'm    wearing the   cheese.  It isn't wearing me!   ";
text = text.TrimAndReduce();

Gives you

text = "I'm wearing the cheese. It isn't wearing me!";

More Related Contents:

  1. How to trim after 1 letter from space C#? [closed]
  2. Can I “multiply” a string (in C#)?
  3. How to remove all white space from the beginning or end of a string?
  4. Why doesn’t VS 2008 display extension methods in Intellisense for String class
  5. Fastest way to remove first char in a String
  6. Identify if a string is a number
  7. Converting string to title case
  8. Most efficient way to remove special characters from string
  9. Serialize an object to string
  10. What does $ mean before a string?
  11. Extension methods must be defined in a non-generic static class
  12. Converting string to double in C#
  13. Find text in string with C#
  14. Is there a C# case insensitive equals operator?
  15. Find Nth occurrence of a character in a string
  16. Replacing a char at a given index in string? [duplicate]
  17. What is the difference between .Equals and == [duplicate]
  18. sort string-numbers [duplicate]
  19. Reversible shuffle algorithm using a key
  20. C# string replace
  21. How do I capitalize first letter of first name and last name in C#?
  22. Truncate string on whole words in .NET C#
  23. Display Float as String with at Least 1 Decimal Place
  24. Delete last char of string
  25. How do I extend a class with c# extension methods? [duplicate]
  26. string.Join on a List or other type
  27. How to sort list of Ip Addresses using c#
  28. Regular expression to find and remove duplicate words
  29. Doesn’t C# Extension Methods allow passing parameters by reference?
  30. what’s the use of string.Clone()?

Leave a Comment