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POHow to validate Form in MVC 2 using Entity Framework
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  1. POHow to validate Form in MVC 2 using Entity Framework
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    copied!<p>I am using MVC 2 and following the example here: <a href="http://www.asp.net/learn/mvc/tutorial-39-cs.aspx" rel="nofollow noreferrer">Using Data Annotation Validators with the Entity Framework</a></p> <p>When I click the Create button in my Create View nothing happens. The ModelState.IsValid is true always. <strong>What could be wrong?</strong></p> <p><strong>Product.cs</strong></p> <pre><code>using System.ComponentModel; using System.ComponentModel.DataAnnotations; namespace MyProject.Mvc.Models { [MetadataType(typeof(ProductMetaData))] public partial class Product { } public class ProductMetaData { [Required(ErrorMessage = "Description is required")] public object Description { get; set; } } } </code></pre> <p><strong>ProductController.cs</strong></p> <pre><code>public ActionResult Create() { Product portal = new Product() { }; return View(new ProductFormViewModel(portal)); } [HttpPost] public ActionResult Create([Bind(Exclude = "ProductId")]FormCollection collection) { if (ModelState.IsValid) { try { // TODO: Add insert logic here return RedirectToAction("Index"); } catch { } } // If we got this far, something failed, redisplay form return View(); } </code></pre> <p><strong>Create.aspx</strong></p> <pre><code>&lt;%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage&lt;MyProject.Mvc.Models.ProductFormViewModel&gt;" %&gt; &lt;%= Html.ValidationSummary("Please correct the errors and try again.") %&gt; &lt;% using (Html.BeginForm()) {%&gt; &lt;fieldset&gt; &lt;legend&gt;Fields&lt;/legend&gt; &lt;div class="editor-label"&gt; &lt;%= Html.LabelFor(model =&gt; model.Product.ProductId) %&gt; &lt;/div&gt; &lt;div class="editor-field"&gt; &lt;%= Html.TextBoxFor(model =&gt; model.Product.ProductId) %&gt; &lt;%= Html.ValidationMessageFor(model =&gt; model.Product.ProductId) %&gt; &lt;/div&gt; &lt;div class="editor-label"&gt; &lt;%= Html.LabelFor(model =&gt; model.Product.ProductName) %&gt; &lt;/div&gt; &lt;div class="editor-field"&gt; &lt;%= Html.TextBoxFor(model =&gt; model.Product.ProductName) %&gt; &lt;%= Html.ValidationMessageFor(model =&gt; model.Product.ProductName) %&gt; &lt;/div&gt; &lt;div class="editor-label"&gt; &lt;%= Html.LabelFor(model =&gt; model.Product.Description) %&gt; &lt;/div&gt; &lt;div class="editor-field"&gt; &lt;%= Html.TextBoxFor(model =&gt; model.Product.Description) %&gt; &lt;%= Html.ValidationMessageFor(model =&gt; model.Product.Description) %&gt; &lt;/div&gt; &lt;p&gt; &lt;input type="submit" value="Create" /&gt; &lt;/p&gt; &lt;/fieldset&gt; &lt;% } %&gt; </code></pre> <p><strong>ProductFormViewModel.cs</strong></p> <pre><code>using System.Web.Mvc; namespace MyProject.Mvc.Models { public class ProductFormViewModel { public Product Product { get; private set; } public ProductFormViewModel(Product product) { Product = product; } } } </code></pre>
 

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