Add SubEntity problem

[Pierre]

What do I do wrong:

I got a entity like that:

public partial class Adresse
 {
     internal sealed class AdresseMetadata
     {
         // Metadata classes are not meant to be instantiated.
         private AdresseMetadata()
         {
         }
         public string Adresse1 { get; set; }
         public string GPS1 { get; set; }
         public string GPS2 { get; set; }
         public int ID { get; set; }
         [Include]
         [Association("Telephone", "ID", "AdresseID")]
         public EntityCollection<Telephone> Telephone { get; set; }
     }
 }

Than I got a wizard that create new Adresse entity manually. The NouvAdresse is a public property located in my view model.
Like:

NouvAdresse = new(Adresse);
NouvAdresse.GPS1 = "12345";
NouvAdresse.GPS2 = "12345";

At one step of the wizard, I got a RadGridView to add some phone number. The grid is binded with the public property NouvAdresse.Telephone
I got a button the do a RadGridTel.BeginInsert();
Then a codebiend function that instanciate an emptu phone entity:

private void GridTelephone_AddingNewDataItem(object sender, Telerik.Windows.Controls.GridView.GridViewAddingNewEventArgs e)
{
    Telephone Tel = new Telephone();
    Tel.TypeTelephoneID = 1;
    e.NewObject = Tel;
}

When the entry is complete I got this code to add id in the Telephone collection of my Adresse Entity:

private void GridTelephone_RowEditEnded(object sender, GridViewRowEditEndedEventArgs e)
{
    if (e.EditedItem != null)
    {
        Telephone Tel = (Telephone)e.EditedItem;
        if (Tel.Numero != null && Tel.Numero.Length > 0)
        {
            m_wizAjouteAdresseVM.NouvAdresse.Telephone.Add((Telephone)e.EditedItem);
        }
    }
}

The row is added and visible to the grid. The Grid add automatically a new row with title "Click here to add new item". At this point if I click on this new row, or if I click on my custom add buton. The a new empty line appear and I can add my second phone number. But if I commit this line, the RowEditEnd is called and the new phone is added to the Adresse.Telephone collection. But this new line never show up in the Grid.

Any suggestion?

[Nedyalko Nikolov]

Hello Pierre,

I cannot figure out what the problem is, according to the information everything seems to be correct.
Could you please send me a sample project which I can debug on my side, since this weird behavior sounds like a bug to me?
Thank you in advance.

Greetings,
Nedyalko Nikolov
the Telerik team