committing to database

Hi everybody,

I have this: Controller
[code]
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Entity;
using System.Globalization;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using ManyToMany.Models;

namespace ManyToMany.Controllers
{
    public class HourController : Controller
    {
        private TimeSheetContext db = new TimeSheetContext();

        //
        // GET: /Hour/

        public ViewResult Index()
        {
            var hours = db.Hours.Include(h => h.Week);
            return View(hours.ToList());

        }

        [HttpPost]
        public  ActionResult Index(int year)
        {

            return new EmptyResult();
        }
        /*
        public ActionResult WikiDetails(bool editable)
        {
            //Wiki wiki = new Wiki
            Wiki wiki = new Wiki
            {
                Name =  "Hallo",
                Url =  "hallo.com",
                Editable = editable             

            };
            return View(wiki);
        }
         */
        //
        // GET: /Hour/Details/5

        public ViewResult Details(int id)
        {
            Hour hour = db.Hours.Find(id);
            return View(hour);
        }

        //
        // GET: /Hour/Create

        public ActionResult Create()
        {
            //ViewBag.WeekID = new SelectList(db.Weeks, "WeekID", "WeekID");
            //ViewBag.weeknr = new SelectList( "weeknr", "value");
            ViewBag.HourID = new SelectList(db.Hours, "HourID", "HourID");
            return View(new Hour());
        }

        //
        // POST: /Hour/Create

        [HttpPost]
        public ActionResult Create(Hour hour)
        {

            try
            {
                if (ModelState.IsValid)
                {
                    db.Hours.Add(hour);

                    //db.Hours.Add(hour.Monday.Value.ToString("d"));
                   
                    db.SaveChanges();
                    return RedirectToAction("Index");
                }
            }
            catch (DataException)
            {
                    ModelState.AddModelError("",hour.Monday.ToString());
              
            }
           

            ViewBag.WeekID = new SelectList (db.Weeks, "Monday", "Monday", hour.WeekID);
           // ViewBag.weeknr = new SelectList( "weeknr", "txtBox");
            //ViewBag.HourID = new SelectList(db.Hours, "txtBox", "Monday");
            return View(hour);
        }//end method
       
        //
        // GET: /Hour/Edit/5

        public ActionResult Edit(int id)
        {
            Hour hour = db.Hours.Find(id);
            ModelState.AddModelError("Name", "What a shit name");
            ViewBag.WeekID = new SelectList(db.Weeks, "WeekID", "WeekID", hour.WeekID);
            return View(hour);
        }

        //
        // POST: /Hour/Edit/5

        [HttpPost]
        public ActionResult Edit(Hour hour)
        {
            if (ModelState.IsValid)
            {
                db.Entry(hour).State = EntityState.Modified;
                db.SaveChanges();
                return RedirectToAction("Index");
            }
            ViewBag.WeekID = new SelectList(db.Weeks, "WeekID", "WeekID", hour.WeekID);
            return View(hour);
        }

        //
        // GET: /Hour/Delete/5

        public ActionResult Delete(int id)
        {
            Hour hour = db.Hours.Find(id);
            return View(hour);
        }

        //
        // POST: /Hour/Delete/5

        [HttpPost, ActionName("Delete")]
        public ActionResult DeleteConfirmed(int id)
        {           
            Hour hour = db.Hours.Find(id);
            db.Hours.Remove(hour);
            db.SaveChanges();
            return RedirectToAction("Index");
        }

        /*
        public DateTime getStartOfWeek(bool useSunday)
        {
            DateTime now = DateTime.Now;
            int dayOfWeek = (int)now.DayOfWeek;

            if (!useSunday)
                dayOfWeek--;
            if (dayOfWeek < 0)
            {
                dayOfWeek = 6;           
            }

            return now.AddDays(-1 * (double)dayOfWeek);

       
        }
         */

        protected override void Dispose(bool disposing)
        {
            db.Dispose();
            base.Dispose(disposing);
        }
    }
}
[/code]

Model:

[code]
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel;
using System.Globalization;
using System.Web.Mvc;

namespace ManyToMany.Models
{
    public class Hour
    {
        public int HourID { get; set; }
        public virtual Week Week { get; set; }
        public int? WeekID { get; set; }
        [ReadOnly(true)]
        public decimal HourTotal { get; set; }

        public int WeekNumber { get; set; }
        public int yearNumber { get; set; }
        public DayOfWeek DayWeek { get; set; }

        [DataType(DataType.Date)]
        [DisplayFormat(DataFormatString = "{0:d}", ApplyFormatInEditMode = true)]
        public DateTime? Monday { get; set; }
        public int Days { get; set; }
        public Decimal? MondayHours { get; set; }
        public Hour()
        {

          
        }
    }
}
[/code]

The View:

[code]
@using System.Collections
@using System.Globalization
@using System.Web.Mvc.Html
@using ManyToMany.Helpers
@using ManyToMany.Controllers


@model ManyToMany.Models.Hour
@{
    ViewBag.Title = "Create";
}

    Create

@using (Html.BeginForm())
{
    @Html.ValidationSummary(true)
   

       

Hour

       
           
               

               

               

               
           
           
               
               
               
           
           
           
           
       

@Html.Hidden("WeekID", String.Empty)                         @Html.ValidationMessageFor(model => model.WeekID)	@Html.LabelFor(model => model.Week.YearNumber, "jaar")                                                                 @Html.DropDownListFor(model => model.Week.YearNumber,Html.GetWeekOfYear())                                                 @Html.ValidationMessageFor(model => model.Week.YearNumber)	@Html.LabelFor(model => model.WeekNumber, "week")                                                                 @Html.DropDownList("weeknr", (IEnumerable)Html.GetWeekNumbers(), new { onchange = "Selectedchange();" })                         @Html.ValidationMessage("week")	@Html.Label("Maandag")                                                                 @Html.TextBox("Monday", Model.Monday.ToString())                         @Html.ValidationMessageFor(model=> model.Monday)

       

           
       

   

}


[/code]

And JQuery:
[code]
function Selectedchange() {
            $("#Monday").val($("#weeknr").val().toString().split(",") [0]);
            $("#Tuesday").val($("#weeknr").val().toString().split(",")[1]);
$("#wendsday").val($("#weeknr").val().toString().split(",")[2]);
            $("#Thursday").val($("#weeknr").val().toString().split(",")[3]);
            $("#Fryday").val($("#weeknr").val().toString().split(",")[4]);
            $("#Saterday").val($("#weeknr").val().toString().split(",")[5]);
            $("#Sunday").val($("#weeknr").val().toString().split(",")[6]);
    };
   

[/code]

I get the correct value back if I select a value from the dropdownlist - in red. Because I put by the create method and exception:

[code]
[HttpPost]
        public ActionResult Create(Hour hour)
        {

            try
            {
                if (ModelState.IsValid)
                {
                    db.Hours.Add(hour);

                    //db.Hours.Add(hour.Monday.Value.ToString("d"));
                   
                    db.SaveChanges();
                    return RedirectToAction("Index");
                }
            }
            catch (DataException)
            {
                    ModelState.AddModelError("",hour.Monday.ToString());
              
            }
           

            ViewBag.WeekID = new SelectList (db.Weeks, "Monday", "Monday", hour.WeekID);
           // ViewBag.weeknr = new SelectList( "weeknr", "txtBox");
            //ViewBag.HourID = new SelectList(db.Hours, "txtBox", "Monday");
            return View(hour);
        }//end method
[/code]

But it doesnt committ it to the databse. I only can do it hardcoded, like this:

[code]
var hours = new List
                            {
                                new Hour() {WeekNumber = 22,Monday = DateTime.Parse("2012-09-01")},
                                new Hour() {WeekNumber = 23,Monday = DateTime.Parse("31-05-2012")},
new Hour() {WeekNumber = 23,Monday = DateTime.Parse("30-06-2012")},
                              
                            };
            hours.ForEach(e => context.Hours.Add(e));
            context.SaveChanges();
[/code]

And the error message of the exception is:

{"An overflow occurred while converting to datetime."}

THX for helping!!