[Newbie] How to use Sqlite-net extensions and foreign keys

Hi everyone,

Google bring me here when I looked for a solution to use foreign key in Windows RT/Phone application. It's very important because I work as a intern and nobody is able to give me an answer here...

My goal is to create and manage a database to store data from a form. The database will be "simple", indeed I just want to store the data and to get them to print them in the different fields of the form when the user will come back to his work. SQLite seems to be perfect for that but it doesn't have foreign key support...

I work on windows 8.1 and visual studio and I use the following library : - SQLite for Windows Runtime - SQLiteNetExtensions

I saw on this forum that it's possible to use foreign key in an easy way using SQLiteNetExtensions but I don't manage to use it even with the help of https://bitbucket.org/twincoders/sqlite-net-extensions#branches

For example I use 2 simple class and I want to create a database :

` using SQLite;

using SQLiteNetExtensions.Attributes;

namespace TestSQLite.Models { class Person { [PrimaryKey, AutoIncrement] public int Id { get; set; }

    [ForeignKey(typeof(Vehicle))]
    public int FK { get; set; }

    [MaxLength(30)]
    public string NameDB { get; set; }

    [MaxLength(30)]
    public string Name { get; set; }

    [MaxLength(30)]
    public string Surname { get; set; }

    public DateTime CreationDate { get; set; }

    [ManyToOne] // Many to one relationship with Vehicle
    public Vehicle Vehicle { get; set; }
}

} `

`using SQLite; using SQLiteNetExtensions.Attributes;

namespace TestSQLite.Models { class Vehicle { [PrimaryKey, AutoIncrement] public int Id { get; set; }

    [MaxLength(30)]
    public string Brand { get; set; }

    [MaxLength(30)]
    public string Color { get; set; }

    [OneToMany] // One to many relationship with Person
    public List<Person> Person { get; set; }
}

}`

`using SQLite;

using SQLiteNetExtensions; using SQLiteNetExtensions.Attributes; using SQLiteNetExtensions.Extensions;

using TestSQLite.Models; using System.Diagnostics;

namespace TestSQLite { /// /// An empty page that can be used on its own or navigated to within a Frame. /// public sealed partial class MainPage : Page {

    public MainPage()
    {
        this.InitializeComponent();       
    }




    private async void Button_Tapped(object sender, TappedRoutedEventArgs e)
    {

        var dbPath = Path.Combine(Windows.Storage.ApplicationData.Current.LocalFolder.Path, "TestDBvs20132.db");
        var conn = new SQLiteAsyncConnection(dbPath);

        var person = new Person() //== valuation, I use the example of https://bitbucket.org/twincoders/sqlite-net-extensions#branches to help me
        {
            NameDB = namedb.Text,
            Name = name.Text,
            Surname = surname.Text,
            CreationDate = DateTime.Now
        };

        await conn.InsertAsync(person);


        var vehicle = new Vehicle() //== stock, I use the example of https://bitbucket.org/twincoders/sqlite-net-extensions#branches to help me
        {
            Brand = "Mustang",
            Color = "Red"
        };

        await conn.InsertAsync(vehicle);


        vehicle.Person = new List<Person> { person };

        UpdateWithChildren(vehicle);

    }`

But at the line of "UpdateWithChildren" I get the following error : "The name "UpdateWithChildren" doesn't exist in this context"...

Please, Is there someone would be able to help ?