Question

I have a parent view and a partial view, but when it try to load the partial view from the parent view get the following error

The model item passed into the dictionary is of type ‘System.Data.Objects.DataClasses.EntityCollection`1[RolMVC3.Models.OFFICE]’,but this dictionary requires a model item of type ‘RolMVC3.Models.OFFICE’.

partial view:

@model RolMVC3.Models.OFFICE
        @Html.HiddenFor(model => model.IdOffice)
        @Html.HiddenFor(model => model.IdSCampus)
        <div class="editor-label">
            @Html.LabelFor(model => model.AddressOffice)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.AddressOffice)
            @Html.ValidationMessageFor(model => model.AddressOffice)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.PhoneOffice)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model..PhoneOffice)
            @Html.ValidationMessageFor(model => model..PhoneOffice)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.EmailOffice)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.EmailOffice)
            @Html.ValidationMessageFor(model => EmailOffice)
        </div>

parent view:

@model RolMVC3.Models.CAMPUS_UNIVERSITY

@{
    ViewBag.Title = "Edit"; 
}

<h2>Edit</h2>

<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>

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

   <h2> @ViewBag.University.Name - @ViewBag.Campus.NameCity </h2>

    <fieldset>
        <legend>MODIFY OFFICE</legend>

        @Html.HiddenFor(model => model.IdUniversidty)

        @Html.HiddenFor(model => model.IdCityCampus)

        @Html.HiddenFor(model => model.IdCampus)

        <div class="editor-label">
            @Html.LabelFor(model => model.AddressCampus)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.AddressCampus)
            @Html.ValidationMessageFor(model => model.AddressCampus)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.PhoneCampusSede)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.PhoneCampus)
            @Html.ValidationMessageFor(model => model.PhoneCampus)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.EamailCampus)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.EamailCampus)
            @Html.ValidationMessageFor(model => model.EamailCampus)
        </div>

        <fieldset>
        <legend>DATA</legend>
       @Html.Partial("_Office", Model.OFFICE)
        </fieldset>
          <p>
            <input type="submit" value="Save" />
        </p>
    </fieldset>
}

controller:

 public ActionResult Edit()
        {
            decimal id;
            id = (decimal)Session["Offi"];

            ViewBag.University = (from c in db.OFFICE
                                   join s in db.CAMPUS_UNIVERSITY on c.IdCampus equals s.IdCampus
                                   join u in db.UNIVERSIDTY on s.IdUniversity equals u.IdUniversity
                                   where c.IdOffice == id
                                   select u).Single();

            ViewBag.Campus = (from c in db.OFFICE
                            join s in db.CAMPUS_UNIVERSITY on c.IdCampus equals s.IdCampus
                            join ci in db.CIUDAD on s.IdCaityCampus equals ci.IdCity
                            where c.IdOffice == id
                            select ci).Single();

            OFFICE office = db.OFFICE.Single(c => c.IdOffice == id);

            CAMPUS_UNIVERSITY campus_university = db.CAMPUS_UNIVERSITY.Single(s => s.IdSede == office.IdCampus);


            return View(campus_university);
        }

blessings

Answer 1

Your controller has the code

OFFICE office = db.OFFICE.Single(c => c.IdOffice == id); 
CAMPUS_UNIVERSITY campus_university = db.CAMPUS_UNIVERSITY
                                        .Single(s => s.IdSede == office.IdCampus); 

But your View is ONLY using the model CAMPUS_UNIVERSITY. I would assume that the CAMPUS_UNIVERSITY.Office property is a EntityCollection<OFFICE> which does not match the view’s requirement of Office.

One solution is to display all the offices:

@foreach(var office in Model.OFFICE)
{
   @Html.Partial("_Office", office)   
}

or the other is to actually use the Office you created in the controller

Controller (add)

ViewBag.Office = db.OFFICE.Single(c => c.IdOffice == id);         

View (change)

@Html.Partial("_Office", ViewBag.Office)