Checking session if empty or not

Question

I want to check that session is null or empty i.e. some thing like this:

if(Session[\"emp_num\"] != null)
{

   if (!string.IsNullOrEmpty(Session[\"emp_num\"         


        

Answer 1

Check if the session is empty or not in C# MVC Version Lower than 5.

if (!string.IsNullOrEmpty(Session["emp_num"] as string))
{
    //cast it and use it
    //business logic
}

Check if the session is empty or not in C# MVC Version Above 5.

if(Session["emp_num"] != null)
{
    //cast it and use it
    //business logic
}