c# convertir caracter con tilde
public static class StringExtensions
{
public static string SinTildes(this string texto) =>
new String(
texto.Normalize(NormalizationForm.FormD)
.Where(c => CharUnicodeInfo.GetUnicodeCategory(c) != UnicodeCategory.NonSpacingMark)
.ToArray()
)
.Normalize(NormalizationForm.FormC);
}