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Replacing all except alpha numeric characters in C#

  1. Forget Code
  2. C#
  3. Replacing all except alpha numeric characters
REGEX stands for Regular expression.
Using regex, we can replace the characters,numbers with a string.

Syntax:
  1. Regex regex = new Regex("[Regular expression]");
  2. output = regex.Replace("input_string", "substitution_string");


  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4. using System.Text;
  5. using System.Text.RegularExpressions;
  6.  
  7. namespace ConsoleApplication1
  8. {
  9.     class Program
  10.     {
  11.         static void Main(string[] args)
  12.         {          
  13.  
  14.             string filename = "My name is C-SHARP 007; (got it !)";
  15.             //find all characters that are letters
  16.             Regex regex = new Regex("[^a-zA-Z0-9]");
  17.             filename = regex.Replace(filename, "$");
  18.  
  19.             Console.WriteLine(filename);
  20.                         
  21.         }
  22.  
  23.     }
  24. }
  25.


Output:
  1. My$name$is$C$SHARP$007$$$got$it$$$