Given the following code
Action methods
// Action for A
public ActionResult New(Ticket t, int knownLocation, string location) { ... }
// Action for B
public ActionResult Edit(Log log, int id, string assignTo, int knownLocation, string location) { ... }
Views
// Ticket.ascx
<%= Html.EditorFor(t => t.KnownLocation);
// A
<%@ Inherits="System.Web.Mvc.ViewPage<Models.Ticket>" %>
<%= Html.EditorForModel() %>
// B
<%@ Inherits="System.Web.Mvc.ViewPage<Models.Log>" %>
<%= Html.EditorFor(l => l.Ticket) %>
Model
class Log
{
...
Ticket Ticket { get; set; }
string Message { get; set; }
...
}
class Ticket
{
...
Importance Importance { get; set; }
string Name { get; set; }
// Please note the protected access level
Location KnownLocation { get; protected set; }
string Location { get; protected set; }
...
}
In New ("A"), knownLocation works fine.
In Edit ("B"), knownLocation throws an exception (behind the scenes):
The parameters dictionary contains a null entry for parameter 'knownLocation' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult Edit(TechHelp.Core.Models.Log, Int32, System.String, Int32, System.String)' in 'TechHelp.Mvc.Controllers.TicketsController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter.
How can I access that field? Note that it can't bind to the Model's property.