Video Executing SQL Query in LINQ to SQL

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ExecutingSQLQuery
{
    class Program
    {
        static void Main(string[] args)
        {
            DataClasses1DataContext context = new DataClasses1DataContext();
            int a = 1;
            var result = context.ExecuteQuery<Person>("select * from Person where PersonID= {0}",a);
            foreach (var r in result)
            {
                Console.WriteLine(r.FirstName + r.LastName);
            }
            Console.ReadKey(true);
            var result1 = context.ExecuteQuery<Person>("select * from Person");
            foreach (var r in result1)
            {
                Console.WriteLine(r.FirstName + r.LastName);
            }

            Console.ReadKey(true);
        }
    }
}

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