IPNetwork Contains Method

IPNetworkContains.cs

    /// <summary>
    /// Determine whether a given The <see cref="IPAddress"/> is part of the IP network.
    /// </summary>
    /// <param name="address">The <see cref="IPAddress"/>.</param>
    /// <returns><see langword="true"/> if the <see cref="IPAddress"/> is part of the IP network. Otherwise, <see langword="false"/>.</returns>
    public bool Contains(IPAddress address)
    {
        if (Prefix.AddressFamily != address.AddressFamily)
        {
            return false;
        }

        var addressBytes = address.GetAddressBytes();
        for (int i = 0; i < PrefixBytes.Length && Mask[i] != 0; i++)
        {
            if ((PrefixBytes[i] & Mask[i]) != (addressBytes[i] & Mask[i]))
            {
                return false;
            }
        }

        return true;
    }