Home/ Questions/Q 3756128
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-19T09:48:15+00:00

Rather than a quick fix I’m more just wondering what others are doing. The

  • 0

Rather than a quick fix I’m more just wondering what others are doing.

The problem is that I am using ModelState for error/validation reporting to the user, but when I use a RedirectToAction(), the ModelState is lost. To overcome this I’ve added some code to our base controller (that all other controllers inherit), in the override of OnActionExecuting I’ve added:

if (TempData["ModelState"] != null && !ModelState.Equals(TempData["ModelState"]))
    ModelState.Merge((ModelStateDictionary)TempData["ModelState"]);

And in the override of OnActionExecuted I’ve added:

TempData["ModelState"] = ModelState;

The problem with this is it means some error messages can be displayed on the wrong pages. I just run a ModelState.clear() at the start of actions I know will want to override/correct the current errors but there are cases where it is never cleared and errors show up in weird places.

How do other people handle this? any ideas welcome. Thanks

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    I have implemented the solution mentioned here:

    http://weblogs.asp.net/rashid/archive/2009/04/01/asp-net-mvc-best-practices-part-1.aspx

    in Point 13 (Use PRG Pattern for Data Modification).

    It looks fairly similar to what you are doing but using Action Filters and I haven’t noticed any error messages on the wrong pages as of yet.

    • 0