// @nuget: Z.EntityFramework.Classic

​

using System;

using System.Linq;

using System.Data.Entity;

using Z.EntityFramework.Classic;

​

public class Program

{

    public static void Main()

    {

        GenerateData();

​

        using (var context = new EntityContext())

        {

            // Cache queries with related tags

            var countries = context.Countries.Cache(new string[] { "countries", "states" });

            var count = context.Countries.DeferredCount().Cache(new string[] { "countries", "states", "stats" });

            FiddleHelper.WriteTable(countries);

            Console.WriteLine("Countries Count: " + count);

            // Expire all cache entries using the "countries" tag

            QueryCacheManager.ExpireTag("countries");

        }

    }

    public static void GenerateData()

    {

        using (var context = new EntityContext())

        {

            context.Countries.Add(new Country() { Name ="Customer_A" });

            context.Countries.Add(new Country() { Name ="Customer_B" });            

            context.Countries.Add(new Country() { Name ="Customer_C" });

            context.SaveChanges();  

        }

    }

​

    public class EntityContext : DbContext

    {

        public EntityContext() : base(FiddleHelper.GetConnectionStringSqlServer())

        {

​

        }

        public DbSet<Country> Countries { get; set; }

    }

​

    public class Country

    {

        public int CountryID { get; set; }

        public string Name { get; set; }

    }

}