o_19mgorv9t13a3ko71fev19l81mqa.pdf

Listing 19-5. The IControllerFactory Interface
using System.Web.Routing;
using System.Web.SessionState;
namespace System.Web.Mvc {
public interface IControllerFactory {
IController CreateController(RequestContext requestContext,
string controllerName);
SessionStateBehavior GetControllerSessionBehavior(RequestContext
requestContext,
string controllerName);
}
}
void ReleaseController(IController controller);
In the sections that follow, I create a simple custom controller factory and walk you through implementations for each of the
methods in the IControllerFactory interface. To begin, I created an Infrastructure folder and added a new
class file called CustomControllerFactory.cs, which I used to create the custom controller factory shown in
Listing 19-6.
Listing 19-6. The Contents of the CustomControllerFactory.cs File
using System;
using System.Web.Mvc;
using System.Web.Routing;
using System.Web.SessionState;
using ControllerExtensibility.Controllers;
namespace ControllerExtensibility.Infrastructure {
public class CustomControllerFactory: IControllerFactory {
public IController CreateController(RequestContext requestContext,
string controllerName) {
"Product";
Type targetType = null;
switch (controllerName) {
case "Product":
targetType = typeof(ProductController);
break;
case "Customer":
targetType = typeof(CustomerController);
break;
default:
requestContext.RouteData.Values["controller"] =
}
targetType = typeof(ProductController);
break;
return targetType == null ? null :
(IController)DependencyResolver.Current.GetService(targetType);
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