Modelbinding using Interfaces in ASP.NET MVC 2
- by Thomas
I have the following View Data:
public class ShoppingCartViewData
{
public IList<IShoppingCartItem> Cart
{
get;
set;
}
}
I populate the viewdata in my controller:
viewData.Cart = CurrentSession.CartItems;
return View(viewData);
And send the data to the view and display it using:
<% for (int i = 0; i < Model.Cart.Count; i++ ) { %>
<%= Html.TextBoxFor(m => m.Cart[i].Quantity)%>
<%= Html.HiddenFor(m => m.Cart[i].Id) %>
<% } %>
I want to be able to catch the viewdata on the post. When I try:
[HttpPost]
public ActionResult UpdateCart(ShoppingCartViewData viewData)
{
...
}
When I run this I get a: System.MissingMethodException: Cannot create an instance of an interface.
Can anyone shed some light on this. What would I have to do to get this to work?
Many Thanks
