public static string ClearForLetter(this string value)
{
var @long = value.ClearForNormalize();
if (!string.IsNullOrEmpty(@long))
{
var letter = @long.Substring(0, 1);
var rgx = new Regex("[^a-zA-Z]");
return rgx.IsMatch(letter) ? "#" : letter;
}
return null;
}
public static string ClearForNormalize(this string value)
{
return value.ClearForNormalize(NormalizationForm.FormKD).Replace(" ", "").ToLower();
}
