//public static string ToTitleCase(this string source)
//{
// return Thread.CurrentThread.CurrentCulture.TextInfo.ToTitleCase(source);
//}
//public static string ToTitileLower(this string source) {
// if (source.IsNullOrEmpty()) {
// return source;
// }
// var firstWord = source.Substring(0, 1).ToLower();
// var result = firstWord + source.Substring(1, source.Length - 1);
// return result;
//}
public static string ToPinYin(this string source)
{
return(StringUtility.CharacterConvertString(source));
}