using System;

using System.Linq;

using System.Xml;

using System.Data;

public class Program

{

    public static void Main()

    {

        DataTable dt1 = new DataTable();

            dt1.Columns.Add("Por", typeof(int));

​

            DataRow row1 = dt1.NewRow();

            row1["Por"] = 12;

            dt1.Rows.Add(row1);

​

            DataRow row2 = dt1.NewRow();

            row2["Por"] = 10;

            dt1.Rows.Add(row2);

​

            DataRow row3 = dt1.NewRow();

            row3["Por"] = 5;

            dt1.Rows.Add(row3);

​

            DataTable dt2 = new DataTable();

            dt2.Columns.Add("FirstPor", typeof(int));

            dt2.Columns.Add("LastPor", typeof(int));

​

            DataRow row4 = dt2.NewRow();

            row4["FirstPor"] = 3;

            row4["LastPor"] = 15;

            dt2.Rows.Add(row4);

​

            DataRow row5 = dt2.NewRow();

            row5["FirstPor"] = 30;

            row5["LastPor"] = 34;

            dt2.Rows.Add(row5);

​

​

            DataRow row6 = dt2.NewRow();

            row6["FirstPor"] = 57;

            row6["LastPor"] = 11;

            dt2.Rows.Add(row6);

​

            DataTable FinalDataTable1 = new DataTable();

            FinalDataTable1 = dt1.Clone();

            foreach (DataRow row in dt1.Rows)

            {

                foreach (DataRow secondRow in dt2.Rows)

                {

                    if (Convert.ToInt32(row["Por"]) >= Convert.ToInt32(secondRow["FirstPor"]) && Convert.ToInt32(row["Por"]) <= Convert.ToInt32(secondRow["LastPor"]))

                        FinalDataTable1.ImportRow(row);

                }

            }

​

            DataTable FinalDataTable = (from x in dt1.AsEnumerable()

                          from y in dt2.AsEnumerable()

                          where x.Field<int>("Por") >= y.Field<int>("FirstPor")

                                && x.Field<int>("Por") <= y.Field<int>("LastPor")

                          select x).CopyToDataTable();

​

            foreach (DataRow row in FinalDataTable1.Rows)

            {

                Console.WriteLine(row["Por"]);

            }

​

            foreach (DataRow row in FinalDataTable.Rows)

            {

                Console.WriteLine(row["Por"]);

            }

    }

}