Custom or User define Attribute in MVC

Hello frnd ,

I am writing this blog for a type of problem which we face during development in mvc-3 or mvc4 .

For a registered user we have to check Session  in every action of every controller ,which is very tedious.

Like this ,

                If (YourSessionObject != null)

{

                //your code goes here.

}

It is very tedious.

So Here is the solution.

You all know about Mvc Attributes. So we can make one attribute which will check our session object and if found null then return back to login page.

So the question is where to write this class, The class will be written in App_Start .

The class should implement ActionFilterAttribute.

In that class you have to over ride OnActionExecuting method.

Here is the code below

public class SessionExpireFilterAttribute : ActionFilterAttribute

    {

        public override void OnActionExecuting(ActionExecutingContext filterContext)

        {

            HttpContext ctx = HttpContext.Current;

            // check if session is supported

            CurrentCustomer objCurrentCustomer = new CurrentCustomer(); //This is session object

            objCurrentCustomer = ((CurrentCustomer)SessionStore.GetSessionValue(SessionStore.Customer));

            if (objCurrentCustomer == null)

            {

                // check if a new session id was generated

                filterContext.Result = new RedirectResult("~/Users/Login"); // if null then return back to login page .

                return;

            }

            base.OnActionExecuting(filterContext);

        }

    }

That’s all just include App_Start in controller and just add [SessionExpireFilter] attribute in your action method.

This will check session in every action .