using System;

    using System.Collections.Generic;

​

using System.Linq;              

public class Program

{ 

    public class FindPersonResultsViewModel

   {

      public int PersonID { get; set; }

      public bool ExistInContactManager { get; set; }

      public bool ActionType { get; set; }

   }

​

   public class PersonViewModel

   {

      public int PersonID { get; set; }

   }

    public static void Main()

    {

         var findPersonResultsViewModel = new List<FindPersonResultsViewModel>()

                                          { new FindPersonResultsViewModel { PersonID = 2, ActionType = false, ExistInContactManager = false },

                                             new FindPersonResultsViewModel { PersonID = 3, ActionType = false, ExistInContactManager = false },

                                             new FindPersonResultsViewModel { PersonID = 4, ActionType = false, ExistInContactManager = false },

                                             new FindPersonResultsViewModel { PersonID = 5, ActionType = false, ExistInContactManager = false },

                                             new FindPersonResultsViewModel { PersonID = 6, ActionType = false, ExistInContactManager = false },

                                          };

​

​

​

         var personModel = new List<PersonViewModel>()

                           { new PersonViewModel { PersonID = 2 },

                              new PersonViewModel { PersonID = 6 },

                              new PersonViewModel { PersonID = 8 },

                              new PersonViewModel { PersonID = 9 },

                              new PersonViewModel { PersonID = 12 },

                              new PersonViewModel { PersonID = 22 },

                              new PersonViewModel { PersonID = 32 },

                              new PersonViewModel { PersonID = 42 },

                           };

​

         var query =

            from pr in findPersonResultsViewModel

            join p in personModel on pr.PersonID equals p.PersonID

            select pr;

​

         foreach (var item in query)

         {

            item.ActionType = true;

            item.ExistInContactManager = true;

         }

​

         foreach (var item in findPersonResultsViewModel)

         {

            Console.WriteLine("PersonID : " +  item.PersonID + ", ActionType :" + item.ActionType + ", ExistInContactManager :" + item.ExistInContactManager);

         }

    }

}