Display_D_HP/TeamAAS-VM/Identity/IPValidationRule.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows.Controls;

namespace TeamAAS_VP.Identity
{
    public class IPValidationRule:ValidationRule
    {
        public override ValidationResult Validate(object value, System.Globalization.CultureInfo cultureInfo)
        {
            
            if (IsValidIP(value.ToString()))
            {
                return new ValidationResult(true, null);
            }
            else
            {
                return new ValidationResult(false, "Invalid_Address");
            }
        }

        private bool IsValidIP(string ip)
        {
            if (string.IsNullOrWhiteSpace(ip))
                return false;

            string[] parts = ip.Split('.');
            if (parts.Length != 4)
                return false;

            foreach (var part in parts)
            {
                if (!byte.TryParse(part, out byte b))
                    return false;
            }

            return true;
        }
    }
}