Mavzu: Web dasturlash Reja

using Microsoft.Data.Entity;

using Microsoft.Extensions.DependencyInjection;

using System;

using System.Linq;

namespace ContosoBooks.Models {

public static class SampleData {

public static void Initialize(IServiceProvider serviceProvider) {

var context = serviceProvider.GetService();

context.Database.Migrate();

if (!context.Book.Any()) {

var austen = context.Author.Add(

new Author { LastName = "Austen", FirstMidName = "Jane" }).Entity;

var dickens = context.Author.Add(

new Author { LastName = "Dickens", FirstMidName = "Charles" }).Entity;

var cervantes = context.Author.Add(

new Author { LastName = "Cervantes", FirstMidName = "Miguel" }).Entity;

context.Book.AddRange(