I'm trying to insert a record using Entity Framework Code First. When trying to save the record I'm Keep getting the following error.

> 
> Store update, insert, or delete statement affected an unexpected number of rows (0). Entities may have been modified or deleted since entities were loaded. Refresh ObjectStateManager entries.
> 
> 
> Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 
> 
> 
> Exception Details: System.Data.OptimisticConcurrencyException: Store update, insert, or delete statement affected an unexpected number of rows (0). Entities may have been modified or deleted since entities were loaded. Refresh ObjectStateManager entries.
> 
> 
> 

Model:

```
 [Table("tblActual_CategoryItem")]
    public class Actual_CategoryItem
    {
        [Key]
        [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
        public int ID { get; set; }
        public int? AgencyID { get; set; }
        public string UniqueURL { get; set; }
        public string Name { get; set; }
        public string Price { get; set; }
        public string Location { get; set; }
        public string LastUpdated { get; set; }
        public string Description { get; set; }
        public string PhotoURL1 { get; set; }
        public string PhotoURL2 { get; set; }
        public string AgencyName { get; set; }
        public string AgencyUniqueURL { get; set; }
        public string AgencyPhotoURL { get; set; }
        public string AgentName { get; set; }
        public string AgentContactNo { get; set; }
        public string AgentEmail { get; set; }
        public DateTime? ImportedDateTime { get; set; }
        public int? CategoryID { get; set; }
        public int? UserID { get; set; }
        public string Suburb { get; set; }
        public string State { get; set; }
        public string PostCode { get; set; }

        [ForeignKey("CategoryID")]
        public CategoryType Category { get; set; }

         [ForeignKey("AgencyID")]
        public Actual_AgencyProfile agency { get; set; }

         [ForeignKey("UserID")]
         public UserProfile userProfile { get; set; }
    }

```

Controller:

```
 [HttpPost]
        public ActionResult Create([Bind(Exclude = "ID")]Actual_CategoryItem actual_categoryitem)
        {
            if (ModelState.IsValid)
            { 
                db.ItemList.Add(actual_categoryitem);

                db.SaveChanges();
                return RedirectToAction("Index");
            }

            ViewBag.CategoryID = new SelectList(db.CategoryTypes, "CategoryID", "TypeName", actual_categoryitem.CategoryID);
            ViewBag.AgencyID = new SelectList(db.Actual_AgencyProfile, "ID", "UniqueURL", actual_categoryitem.AgencyID);
            return View(actual_categoryitem);
        }

```

View:

```
@using (Html.BeginForm())
{
    @Html.ValidationSummary(false)
   @Html.HiddenFor(model => model.ID)
    <div class="left-col">
        <div class="clearfix"></div>
        <br />

        <div class="column-a col-md-12 col-sm-12 col-xs-12" style="padding-top: 0px;">
            <div>
                @Html.ActionLink("Back to List", "Index")
            </div>
            <div style="height: auto">
                <section class="widget">
                    <h4 class="widget-title">Add New Post</h4>

                    <div class="kopa-one-two">
                        <section class="widget">

                            <div class="entry-item">
                                <div class="col-md-12"></div>
                            </div>

                            <div id="divAgency">
                                <div class="entry-item">
                                    <div class="col-md-12">Category : </div>
                                </div>
                                <div class="entry-item">
                                    <div class="col-md-12">
                                        @Html.DropDownList("CategoryID", (IEnumerable<SelectListItem>)ViewBag.CategoryID, new { @class = "form-control" })
                                        @Html.ValidationMessageFor(model => model.CategoryID)
                                    </div>
                                </div>
                                <div class="clearfix"></div>
                            </div>

                            <div class="entry-item">
                                <div class="col-md-12">Business Name: </div>
                            </div>
                            <div class="entry-item">
                                <div class="col-md-12">
                                    @Html.TextBoxFor(o => o.Name, new { @class = "form-control" })
                                </div>
                            </div>
                            <div class="clearfix"></div>

                            <div class="entry-item">
                                <div class="col-md-12">Sale Price : </div>
                            </div>
                            <div class="entry-item">
                                <div class="col-md-12">
                                    @Html.TextBoxFor(o => o.Price, new { @class = "form-control" })
                                </div>
                            </div>
                            <div class="clearfix"></div>

                            <div class="entry-item">
                                <div class="col-md-12">Street Address : </div>
                            </div>
                            <div class="entry-item">
                                <div class="col-md-12">
                                    @Html.TextBoxFor(o => o.Location, new { @class = "form-control" })
                                </div>
                            </div>
                            <div class="clearfix"></div>

                            <div class="entry-item">
                                <div class="col-md-12">State: </div>
                            </div>
                            <div class="entry-item">
                                <div class="col-md-12">
                                    @Html.DropDownListFor(o => o.State, new List<SelectListItem>() { ( new SelectListItem() { Text = "New South Wales", Value = "NSW" }),( new SelectListItem() { Text = "Victoria", Value = "VIC" }),
                               ( new SelectListItem() { Text = "Queensland", Value = "QLD" }),( new SelectListItem() { Text = "Western Australia", Value = "WA" })
                            ,( new SelectListItem() { Text = "ACT", Value = "ACT" }),( new SelectListItem() { Text = "South Australia", Value = "SA" })
                            ,( new SelectListItem() { Text = "Tasmania", Value = "TAS" }),( new SelectListItem() { Text = "Northern Territory", Value = "NT" })}
                               , "Please Select", new { @class = "form-control" })

                                </div>
                            </div>
                            <div class="clearfix"></div>

                        </section>

                    </div>
                    <!--kopa-one-third-->
                    <div class="kopa-one-two last">
                        <section class="widget">

                            <div class="entry-item">
                                <div class="col-md-12">Suburb: </div>
                            </div>
                            <div class="entry-item">
                                <div class="col-md-12">
                                    @Html.TextBoxFor(o => o.Suburb, new { @class = "form-control" })

                                </div>
                            </div>
                            <div class="clearfix"></div>

                            <div class="entry-item">
                                <div class="col-md-12">Post Code: </div>
                            </div>
                            <div class="entry-item">
                                <div class="col-md-12">
                                    @Html.TextBoxFor(o => o.PostCode, new { @class = "form-control" })
                                </div>
                            </div>
                            <div class="clearfix"></div>

                            <div class="entry-item">
                                <div class="col-md-12">Contact No: </div>
                            </div>
                            <div class="entry-item">
                                <div class="col-md-12">
                                    @Html.TextBoxFor(o => o.AgentContactNo, new { @class = "form-control" })
                                </div>
                            </div>
                            <div class="clearfix"></div>

                            <div class="entry-item">
                                <div class="col-md-12">Contact Email: </div>
                            </div>
                            <div class="entry-item">
                                <div class="col-md-12">
                                    @Html.TextBoxFor(o => o.AgentEmail, new { @class = "form-control" })
                                </div>
                            </div>

                        </section>
                    </div>

                    <!--older-posts-->
                </section>
                <!--widget-->
                   <div class="clearfix"></div>
                            <br />
                            <div class="entry-item">
                                <div class="col-md-12" style="text-align: right">
                                    <input type="submit" id="submit-comment" value="Submit" class="btn btn-info" />
                                </div>
                            </div>
            </div>

        </div>
        <div style="padding-left: 30px">
            @Html.ActionLink("Back to List", "Index")
        </div>
    </div>

    <div class="right-col">
        .
    </div>
}

```