C# Checking variables whether defined or not

Question

I just started learning asp.net and c#.

Let say I have a session like this:

Session.Add("username","me");

At a later section, I wanna learn whether that session has been defined. How can i do that ? I tried to do this :

if(Session["username"]){
   // some code
}

but of course it didn't work.

What kind of error message do you get? What kind of type has the content that you put into the session? Does `if` supports this kind of type? — keenthinker, Aug 20 '16 at 13:18

score 0 · Accepted Answer · answered Aug 20 '16 at 13:20

0

Try this code

        if (Session["username"] != null)
        {

        }

answered Aug 20 '16 at 13:20

Anirudha Gupta

1 Answers1