namespace WorldOfPeacecraft { public class StringUtils { public static string SubstringBefore(string str, string separator) { if (str == null) return null; return str.Substring(0, str.IndexOf(separator)); } public static string SubstringAfter(string str, string separator) { if (str == null) return null; return str.Substring(str.IndexOf(separator) + 1); } } }