How to replace all special character into a string using C

Question

I would like to replace all special characters in a string with a comma       For Example    Hello Hello amp Hello Hello    the output -   Hello Hello Hello Hello     I don t known how to use regexp in C     Can i do this work using regexp in C

User · Answer

You can use a regular expresion to for example replace all non-alphanumeric characters with commas:

s = Regex.Replace(s, "[^0-9A-Za-z]+", ",");

Note: The + after the set will make it replace each group of non-alphanumeric characters with a comma. If you want to replace each character with a comma, just remove the +.

User · Answer

Also  It can be done with LINQ  var str    Hello Hello amp Hello Hello    var characters   str Select c   gt  char IsLetter c    c         ToArray                 var output   new string characters   Console WriteLine output

User · Answer

Yes  you can use regular expressions in C    Using regular expressions with C    using System Text RegularExpressions   string your String    Hello Hello amp Hello Hello    string my String    Regex Replace your String      0-9a-zA-Z

User · Answer

Assume you want to replace symbols which are not digits or letters  and   character as  Guffa correctly pointed    string input    Hello Hello amp Hello Hello    string result   Regex Replace input       w d             Hello Hello Hello Hello    You can add another symbols which should not be replaced  E g  if you want white space symbols to stay  then just add  s to pattern      w d s

[c#] How to replace all special character into a string using C#

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