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POdropdown value null when using, viewmodel & modelbinder in asp.net mvc
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  1. POdropdown value null when using, viewmodel & modelbinder in asp.net mvc
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    copied!<p>I am using asp.net's modelbinder functionality to bind form values to my entity when posting from a view. </p> <p>The html renders correctly in the initial view with correct option and value items.</p> <p>When completing the form and posting, all values are populated correctly into the entity except the value from the dropdown list. not sure what I am doing wrong.</p> <p>code attached below:</p> <p>Customer Entity:</p> <pre><code> public class Customer : EntityBase { public virtual string Name { get; set; } public virtual string Email { get; set; } public virtual string Mobile { get; set; } public virtual Store LocalStore { get; set; } public virtual DateTime? DateOfBirth { get; set; } public Customer(){} public Customer(string name, string email, string mobile, Store localStore):this(name, email, mobile, localStore, null) { } public Customer(string name, string email, string mobile, Store localStore, DateTime? dateOfBirth) { Name = name; Email = email; Mobile = mobile; LocalStore = localStore; DateOfBirth = dateOfBirth; } } </code></pre> <p>ViewModel:</p> <pre><code> public class CustomerViewModel { // Properties private IStoreRepository _StoreRepository; public Customer Customer { get; private set; } public SelectList Stores { get; private set; } // Constructor public CustomerViewModel(IStoreRepository storeRepository, Customer customer) { _StoreRepository = storeRepository; Customer = customer; Stores = new SelectList(_StoreRepository.GetAllStores(), "Id", "Name", Customer.LocalStore.Id); } } </code></pre> <p>Controller:</p> <pre><code> [AcceptVerbs(HttpVerbs.Post)] public ActionResult Create([Bind(Prefix="")]Customer customer) { return View(new CustomerViewModel(_StoreRepository, customer)); } </code></pre> <p>View:</p> <pre><code>&lt;%@ Import Namespace="BlackDiamond.Buzz.MVCWeb.Controllers"%&gt; &lt;%@ Import Namespace="BlackDiamond.Buzz.Core"%&gt; &lt;%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl&lt;CustomerViewModel&gt;" %&gt; &lt;% Customer customer = ViewData.Model.Customer; using (Html.BeginForm()) { %&gt; &lt;table&gt; &lt;tr&gt; &lt;td&gt;Local Store:&lt;/td&gt; &lt;td&gt;&lt;%= Html.DropDownList("LocalStore", ViewData.Model.Stores)%&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Name:&lt;/td&gt;&lt;td&gt;&lt;%= Html.TextBox("Name", customer.Name)%&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Email:&lt;/td&gt;&lt;td&gt;&lt;%= Html.TextBox("Email", customer.Email)%&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Mobile:&lt;/td&gt;&lt;td&gt;&lt;%= Html.TextBox("Mobile", customer.Mobile)%&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;input type="submit" value="Create" /&gt; &lt;%}%&gt; </code></pre>
 

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