using System.Text; namespace System.Extensions; public static class StringExtensions { public static bool IsNullOrEmpty(this string s) { return string.IsNullOrEmpty(s); } public static bool IsNullOrWhiteSpace(this string s) { return string.IsNullOrWhiteSpace(s); } public static byte[] GetBytes(this string s) { return Encoding.UTF8.GetBytes(s); } public static string GetString(this byte[] bytes) { return Encoding.UTF8.GetString(bytes); } }