Log4Netly Replace Special Characters Regex

SpecialCharactersRegex

private static readonly Regex SpecialCharactersRegex = new Regex(@"[^a-z0-9_]", RegexOptions.IgnoreCase | RegexOptions.Compiled);

private static string RemoveSpecialCharacters(string key)
{
    return SpecialCharactersRegex.Replace(key, "");
}