using System;

using System.Text;

using System.Globalization;

​

public class Program

{

    public static void Main()

    {

        string url = "Apartamento-Perdizes-São-Paulo-3-quartos-1511711";

        string url_2 = RemoveAccents(url);

        string formattedUrl = Uri.EscapeDataString(url_2);

        Console.WriteLine(url_2);

        Console.WriteLine(formattedUrl);

    }

    public static string RemoveAccents(string text)

    {

        var normalizedString = text.Normalize(NormalizationForm.FormD);

        var stringBuilder = new StringBuilder();

​

        foreach (var c in normalizedString)

        {

            var unicodeCategory = CharUnicodeInfo.GetUnicodeCategory(c);

            if (unicodeCategory != UnicodeCategory.NonSpacingMark)

            {

                stringBuilder.Append(c);

            }

        }

​

        return stringBuilder.ToString().Normalize(NormalizationForm.FormC);

    }

}