ASP.MVC 2 Model Data Persistance
- by toccig
I'm and MVC1 programmer, new to the MVC2. 
The data will not persist to the database in an edit scenario. Create works fine.
Controller:
    //
    // POST: /Attendee/Edit/5
    [Authorize(Roles = "Admin")]
    [AcceptVerbs(HttpVerbs.Post)]
    public ActionResult Edit(Attendee attendee)
    {
        if (ModelState.IsValid)
        {
            UpdateModel(attendee, "Attendee");
            repository.Save();
            return RedirectToAction("Details", attendee);
        }
        else
        {
            return View(attendee);
        }
    }
Model:
[MetadataType(typeof(Attendee_Validation))]
public partial class Attendee
{
}
public class Attendee_Validation
{
    [HiddenInput(DisplayValue = false)]
    public int attendee_id { get; set; }
    [HiddenInput(DisplayValue = false)]
    public int attendee_pin { get; set; }
    [Required(ErrorMessage = "* required")]
    [StringLength(50, ErrorMessage = "* Must be under 50 characters")]
    public string attendee_fname { get; set; }
    [StringLength(50, ErrorMessage = "* Must be under 50 characters")]
    public string attendee_mname { get; set; }
}
I tried to add [Bind(Exclude="attendee_id")] above the Class declaration, but then the value of the attendee_id attribute is set to '0'. 
View (Strongly-Typed):
<% using (Html.BeginForm()) {%>
    ...
    <%=Html.Hidden("attendee_id", Model.attendee_id) %>
    ...
    <%=Html.SubmitButton("btnSubmit", "Save") %>
<% } %>
Basically, the repository.Save(); function seems to do nothing. I imagine it has something to do with a primary key constraint violation. But I'm not getting any errors from SQL Server. The application appears to runs fine, but the data is never persisted to the Database.