asp.net mvc radio button state

Question

I\'m trying out asp.net mvc for a new project, and I ran across something odd. When I use the MVC UI helpers for textboxes, the values get persisted between calls. But, when I

Answer 1

What you need is something like this in your view:

<% foreach(var provider in (IEnumerable)ViewData["Providers"]) { %>
    <%=Html.RadioButton("ProviderType", provider.ID.ToString(), provider.IsSelected)%><%=provider.Name%>
<% } %>

And then in your controller have this:

var providers = GetProviders();
int selectedId = (int) Request["ProviderType"]; // TODO: Use Int32.TryParse() instead
foreach(var p in providers)
{
    if (p.ID == selectedId)
    {
        p.IsSelected = true;
        break;
    }
}
ViewData["Providers"] = providers;
return View();

The Provider class will be something like this:

public class Provider
{
    public int ID { get; set; }
    public string Name { get; set; }
    public bool IsSelected { get; set; }
}