C# 4 and .NET 4

MVC ❘ 1271
code snippet PCSMVCMagicShop/Views/Products/Create.aspx
Several helper methods are included here to create and edit the form, and again you can see how the data
model has been interrogated to extract information for the fields to use and the validation required. The
form itself is contained in the following code block:
using (Html.BeginForm())
{
...
}
This helper method creates a form that is submitted using a standard HTML
control, which results in the form values being passed to the action method. You then have access to these
values so that you can add a new item.
You can delete the following section of code to remove the text box for the product ID, since this is
auto-generated:
ProductId:
The code required to add an item is as follows:
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Create([Bind(Exclude = "ProductId")] Product productToCreate)
{
try
{
if (!ModelState.IsValid)
{
return View();
}
}
entities.AddToProducts(productToCreate);
entities.SaveChanges();
return RedirectToAction("Index");
}
catch
{
return View();
}
code snippet PCSMVCMagicShop/Controllers/ProductsController.cs
There are several points to note about this code. First, note that you can change the method signature to
accept a strongly-typed Product value. This is easier than working through a collection of form values, but to
facilitate it you need to exclude the ProductId field, since it won’t be passed. The Bind attribute achieves this.
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