Intermittent asp.net mvc exception: “A public action method ABC could not be found on controller XYZ
- by Chris Schoon
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
