using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public class Package

    {

        private readonly int _packageID = -1;

        private readonly string _packageStatus = string.Empty;

​

        public Package(int package_ID, string package_status)

        {

            _packageID = package_ID;

            _packageStatus = package_status;

        }

​

        public int PackageID => _packageID;

        public string PackageStatus => _packageStatus;

    }

    public static void Main()

    {

        List<Package> PackageList = new List<Package>();

        PackageList.Add(new Package(0, "New"));

        PackageList.Add(new Package(1, "Processed"));

        PackageList.Add(new Package(2, "Processed"));

        PackageList.Add(new Package(3, "New"));

        PackageList.Add(new Package(4, "Sent"));

        PackageList.Add(new Package(4, "Received"));

​

​

        List<string> Conditions = new List<string>() { "New", "Processed"};

​

        var SubList = PackageList.Where(x => Conditions.Contains(x.PackageStatus)).ToList();

        foreach (var item in SubList)

        {

            Console.WriteLine($"ID:{item.PackageID}  Status:{item.PackageStatus}");

        }

    }

}

​