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PODropDownList Result not being Returned
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  1. PODropDownList Result not being Returned
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    copied!<p>I am trying to create an Item that has an ItemType coming from another table. I am unable to get back the actual Type object from the Create page. This is the code I have tried:</p> <p>Models:</p> <pre><code>public class ItemType { public int Id { get; set; } [Required] public string Name { get; set; } public virtual ICollection&lt;Item&gt; Item{ get; set; } } public class Item { public int Id { get; set; } [Required] public string Name { get; set; } public virtual ItemType ItemType { get; set; } } </code></pre> <p>In the ItemController, this is my create code:</p> <pre><code> public ActionResult Create() { var itemTypeRepo = new ItemTypeRepository(context); ViewBag.ItemTypes = new SelectList(itemTypeRepo.GetAll(), "ID", "Name"); return View(); } [HttpPost] public ActionResult Create(Item item) { if (ModelState.IsValid) { context.Items.Add(item); context.SaveChanges(); return RedirectToAction("Index"); } return View(item); } </code></pre> <p>In my Create.cshtml view I have tried:</p> <pre><code>&lt;div class="editor-field"&gt; @Html.DropDownList("ItemType", String.Empty) @Html.ValidationMessageFor(model =&gt; model.ItemType) &lt;/div&gt; </code></pre> <p>This returns no value at all and throws an error "The value 'X' is invalid." Where X is the ID of the ItemType I selected. And</p> <pre><code>&lt;div class="editor-field"&gt; @Html.DropDownListFor(x =&gt; x.ItemType.Id, (SelectList)ViewBag.ItemType) @Html.ValidationMessageFor(model =&gt; model.ItemType) &lt;/div&gt; </code></pre> <p>This creates a stub ItemType object with the correct ID but does not insert it into the database since the object is not fully loaded. If I look at ModelState object, I find that there is an error that the Name field is missing from ItemType object.</p> <p>I also attempted to solve the problem using the second .cshtml code and adding this code:</p> <pre><code>public ActionResult Create(Item item) { item.ItemType = context.ItemTypes.Find(item.ItemType.Id); if (ModelState.IsValid) </code></pre> <p>This does not change the value of ModelState.IsValid from false even through it should.</p> <p>What do I need to do to get this to work?</p>
 

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