如何检查控制器的每个动作的会话？

Question

i have a controller called AllEntities it has multiple actions like GetEntityByTypeId and GetLastEntity

i want to do a session check whenever AllEntities controller is used

like suppose i request a url http://localhost:59656/AllEntities/GetLastEntity
then it should check weather session is assigned or not

one way of doing this would be put condition if (Session["userName"] == null)
in every Action of this controller
How can it be checked once for entire AllEntities controller

any kind of help would be appreciated

Answer 1

You could override the controllers Initialize method which would fire on every action. I use it to populate ViewBag elements I need on multiple/all views.

public class YourController : Controller
{

    protected override void Initialize(RequestContext requestContext)
    {
        base.Initialize(requestContext);

        try
        {
            //do your session check here...

            //alternatively, if you wanted to limit to certain actions in your controller you could say: 
            var actionName = requestContext.RouteData.Values["action"].ToString().ToLower();
            if(actionName == "actionName" || actionName == "actionName2") {
               //do your limited session work...
            }
        }
        catch (Exception e) { }

    }
    ...