Query string param is missed when form validation fail

Question

I have an form with following url: CreateEntity?officeCodeId=5

When I send form to validate and if validation is fail it returns just CreateEntity u

Answer 1

The problem is your HttpPost action doesn't have any notion of an id parameter. If you want to support a similar URL then make the action signature support that parameter e.g.

[HttpGet]
public ActionResult CreateEntity(int? officeCodeId)

[HttpPost]
public ActionResult CreateEntity(int officeCodeId, EditViewModel model);