Question

Western Latin character set contains characters such as
À Á Â Ã Ä Å which have all the same standard char ‘a’ as ‘radix’. This happens on e,i,o,etc. as well.
Is there a regex for replacing these variations to their ‘radix’ characters?

This would be used to create a seo friendly url from a text (but not limited to):

Example: La cena è pronta => La cena e pronta

Answer 1

Try this:

string str = "La cena è pronta àèéìòùçæÀÈÉÌÒÙÇÆ";
str = str.Normalize(NormalizationForm.FormD); // Or use NormalizationForm.FormKD
str = Regex.Replace(str, @"\p{Mn}", "");
// Result: La cena e pronta aeeioucæAEEIOUCÆ

But note that Æ remains Æ.