How do I remove accents in a string?

Question

I have a string

áéíóú

That I want to convert to

aeiou

How do I remove accents? Need to save to database as a URL.

Answer 1

You can use this function:

public static string RemoveAccents(this string text){   
    StringBuilder sbReturn = new StringBuilder();   
    var arrayText = text.Normalize(NormalizationForm.FormD).ToCharArray();
    foreach (char letter in arrayText){   
        if (CharUnicodeInfo.GetUnicodeCategory(letter) != UnicodeCategory.NonSpacingMark)
            sbReturn.Append(letter);   
    }   
    return sbReturn.ToString();   
} 

Source: http://www.ninjacode.com.br/post/2011/08/10/Retirar-acentos-de-strings-C.aspx

Answer 2

You can also read all the characters that are in the variable comAcentos, and given a Replace in the parameter that was passed in the function, that is, the letters that are comAcentos by semAcentos and returns the new text.

public static string removerAcentos(string texto)
{
    string comAcentos = "ÄÅÁÂÀÃäáâàãÉÊËÈéêëèÍÎÏÌíîïìÖÓÔÒÕöóôòõÜÚÛüúûùÇç";
    string semAcentos = "AAAAAAaaaaaEEEEeeeeIIIIiiiiOOOOOoooooUUUuuuuCc";

    for (int i = 0; i < comAcentos.Length; i++)
    {
        texto = texto.Replace(comAcentos[i].ToString(), semAcentos[i].ToString());
    }
    return texto;
}

Answer 3

Using LINQ is very practical:

public static string RemoverAcentuacao(this string text)
{
    return new string(text
        .Normalize(NormalizationForm.FormD)
        .Where(ch => char.GetUnicodeCategory(ch) != UnicodeCategory.NonSpacingMark)
        .ToArray());
}

What are NormalizationForm.FormD and UnicodeCategory.NonSpacingMark

This is a way of representing the original string so that marks such as accentuation, cedilla, among others, are separated into distinct characters: the base character, which is the letter, and the character of the markup. The accent character in this case is called NonSpacingMark, i.e., marker without space, means that it is a marker that does not occupy any space, and will be applied to the previous character.

Using LINQ we can remove these markings, leaving only the base characters, without the markings and build a new string from these characters.

Answer 4

public static string RemoverAcentos(this string texto)
{
   if (string.IsNullOrEmpty(texto))
       return String.Empty;

   byte[] bytes = System.Text.Encoding.GetEncoding("iso-8859-8").GetBytes(texto);
   return System.Text.Encoding.UTF8.GetString(bytes);
}

string nome = "João Felipe Portela";
string nomeSemAcentos = nome.RemoverAcentos();

Answer 5

There is this method I use to remove accentuation:

public static string RemoverAcentos(string texto){

    string s = texto.Normalize(NormalizationForm.FormD);
    StringBuilder sb = new StringBuilder();
    for (int k = 0; k < s.Length; k++)
    {
        UnicodeCategory uc = CharUnicodeInfo.GetUnicodeCategory(s[k]);
        if (uc != UnicodeCategory.NonSpacingMark)
        {
            sb.Append(s[k]);
        }
    }
    return sb.ToString();
}

Answer 6

An alternative to the answers given above is to install the following nuget: https://www.nuget.org/packages/MMLib.Extensions/

then you can remove the accents as follows:

var str = "áéíóú";
str = str.RemoveDiacritics();

Answer 7

The page code (codepage) Greek (ISO) can do this

Information about this codepage can be obtained at the return of the method System.Text.Encoding.GetEncodings(). See more here.

Greek (ISO) has codepage 28597 and name iso-8859-7.

Let’s go to code... o/

string text = "Você está numa situação lamentável";

string textEncode = System.Web.HttpUtility.UrlEncode(text, Encoding.GetEncoding("iso-8859-7"));
//result: "Voce+esta+numa+situacao+lamentavel"

string textDecode = System.Web.HttpUtility.UrlDecode(textEncode);
//result: "Voce esta numa situacao lamentavel"

So write this function...

public string RemoverAcentuacao(string text)
{
    return
        System.Web.HttpUtility.UrlDecode(
            System.Web.HttpUtility.UrlEncode(
                text, Encoding.GetEncoding("iso-8859-7")));
}

Note that Encoding.GetEncoding("iso-8859-7") is equivalent to Encoding.GetEncoding(28597). The first search by name, the second by Encoding’s codepage.

Other options can be seen on Stackoverflow in English:

Answer 8

In Qtcreator

QString GerCorrida::removeAccentuation(QString text)
{
    QString with = "ÄÅÁÂÀÃäáâàãÉÊËÈéêëèÍÎÏÌíîïìÖÓÔÒÕöóôòõÜÚÛüúûùÇç";
    QString withOut = "AAAAAAaaaaaEEEEeeeeIIIIiiiiOOOOOoooooUUUuuuuCc";
    for (int i = 0; i < with.size(); i++)
    {
        text = text.replace( with[i], withOut[i] );
    }
    return text;
}