Hi, I'm getting an intermittent exception saying that asp.net mvc can’t find the action method. Here’s the exception:

A public action method 'Fill' could not be found on controller 'Schoon.Form.Web.Controllers.ChrisController'.

I think I have the routing set up correctly because this application works most of the time. Here is the controller’s action method.

[ActionName("Fill")]
[AcceptVerbs(HttpVerbs.Get | HttpVerbs.Post), UserIdFilter, DTOFilter]
public ActionResult Fill(int userId, int subscriberId, DisplayMode? mode)
{
     //…
}

The route:

routes.MapRoute(
        "SchoonForm",
        "Form/Fill/{subscriberId}",
        new { controller = "ChrisController", action = "Fill" },
        new { subscriberId = @"\d+" }
    );

And here is the stack:

System.Web.HttpException: A public action method 'Fill' could not be found on controller 'Schoon.Form.Web.Controllers.ChrisController'. at System.Web.Mvc.Controller.HandleUnknownAction(String actionName) in C:\dev\ThirdParty\MvcDev\src\SystemWebMvc\Mvc\Controller.cs:line 197 at System.Web.Mvc.Controller.ExecuteCore() in C:\dev\ThirdParty\MvcDev\src\SystemWebMvc\Mvc\Controller.cs:line 164 at System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) in C:\dev\ThirdParty\MvcDev\src\SystemWebMvc\Mvc\ControllerBase.cs:line 76 at System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) in C:\dev\ThirdParty\MvcDev\src\SystemWebMvc\Mvc\ControllerBase.cs:line 87 at System.Web.Mvc.MvcHandler.ProcessRequest(HttpContextBase httpContext) in C:\dev\ThirdParty\MvcDev\src\SystemWebMvc\Mvc\MvcHandler.cs:line 80 at System.Web.Mvc.MvcHandler.ProcessRequest(HttpContext httpContext) in C:\dev\ThirdParty\MvcDev\src\SystemWebMvc\Mvc\MvcHandler.cs:line 68 at System.Web.Mvc.MvcHandler.System.Web.IHttpHandler.ProcessRequest(HttpContext httpContext) in C:\dev\ThirdParty\MvcDev\src\SystemWebMvc\Mvc\MvcHandler.cs:line 104 at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Here is an example of my filters they all work the same way:

public class UserIdFilter : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        const string Key = "userId";

        if (filterContext.ActionParameters.ContainsKey(Key))
        {
            filterContext.ActionParameters[Key] = // get the user id from session or cookie
        }

        base.OnActionExecuting(filterContext);
    }
}

Thanks, Chris