How to delete diacritics from a string in C#?

Question

I have a string -

125DF885DF44é112846522FF001

I want to remove é from the string. When I search online I get solutions to remove the accents from é and returns e.

The diacritic character can come anywhere in the string and not in fixed place, also can be more than one.

How do I remove those?

What did you tried? Did you tried using a foreach loop and build a new string? Or `String.Replace("é", "");`? — Jeroen van Langen, May 17 '22 at 06:51
I would recommend you tackle the problem from the other side. What characters are allowed? Then filter to keep only those, maybe with a `Regex`. — Jeremy Lakeman, May 17 '22 at 06:55

score 2 · Accepted Answer · answered May 17 '22 at 06:51

2

You can use this

string s = "125DF885DF44é112846522FF001";
string s1 = s.Replace("é","");

answered May 17 '22 at 06:51

SlobodanT

406
3
7

OMG, It didn't even occur to me to even try the replace method. Thank you so much. – Alisha May 17 '22 at 06:56
If you have more than just é, you can put those in array or list and loop thru that collection and replace every diacritic. Regex is also nice approach as @Jeremy Lakeman mentioned – SlobodanT May 17 '22 at 07:00
You, probably, want `string s1 = s.Replace("é","e");` - note `"e"` - to *substitute* `"é"` by `"e"`, not totally remove `"é"` – Dmitry Bychenko May 17 '22 at 07:11

Dmitry Bychenko · Answer 2 · 2022-05-17T07:12:11.343

In general case, we can remove symbols of unicode NonSpacingMark range:

We turn each symbol into pair: symbol + its mark(s) (that's the diacritics)
We remove marks
Combine symbols back

Code:

using System.Linq;

...

string source = "125DF885DF44é112846522FF001";

string result = string.Concat(source
    .Normalize(NormalizationForm.FormD)
    .Where(c => CharUnicodeInfo.GetUnicodeCategory(c) != 
                UnicodeCategory.NonSpacingMark))
  .Normalize(NormalizationForm.FormC);

How to delete diacritics from a string in C#?

2 Answers2