how to remove some character from string

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Hello all.
i want to remove all special character or all other character but i do not want to remove like @ / : = etc and alpha bates.
what is the best way to do it

string mystring="♫♠~.┘&╤+@\????v?*=?\n?E???M???u??????r[?????o?W,~ ?:";

Posted 9-Sep-14 5:27am

Jawad Ahmed Tanoli

Updated 9-Sep-14 5:36am

v2

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Mike Hankey 9-Sep-14 11:35am

Try Regex.Replace it can be used to replace any special characters see http://www.regular-expressions.info/replacetutorial.html and if you want a good tool for testing Regex expressions try Expresso!

Jawad Ahmed Tanoli 9-Sep-14 11:39am

Regex.Replace(System.Text.Encoding.ASCII.GetString(mystring, @"[^0-9a-zA-Z]+", ".");
i am using this but it will replace all characters i want that some character will not be removed

Andreas Gieriet 9-Sep-14 13:35pm

How about leaving away the ASCII thingy? Why do you convert to ASCII **before** replacing?
Andi

jaket-cp 16-Sep-14 9:59am

you should be able to add @ / : = into your regex pattern
e.g.: [^0-9a-zA-Z@/:=]+
Try that let us know how it works out

BillWoodruff 16-Sep-14 12:12pm

You need to define exactly the set of "special characters" you want to remove.

2 solutions

Solution 1

Please try the below links
replace special characters in c#[^]

http://stackoverflow.com/questions/21388090/how-to-replace-all-special-character-into-a-string-using-c-sharp[^]

Posted 9-Sep-14 5:32am

ChauhanAjay

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Jawad Ahmed Tanoli · Accepted Answer · 2014-09-16T03:51:00

C#

string mystring="♫♠~.┘&╤+@\????v?*=?\n?E???M???u??????r[?????o?W,~ ?:";
string test="";
char[] allowCharacter = new char[] {' ','@','\n','\r','.',':','[',']','/','*',';','=','-','"','?','+','$','!','~','#','^','&','(',')','_','-','>','<','!','`', '{','}','|'};
              foreach (char item in mystring)
              {
                  if (allowCharacter.Contains(item) || char.IsLetter(item) || char.IsNumber(item))
                  {
                      test = test + item.ToString();

                  }
                 
                  else
                  {
 test = test + ".";
                  }
              }