Using the conditional operator ? to check for null session variable

Question

Take a look at this code:

System.Web.SessionState.HttpSessionState ss = HttpContext.Current.Session["pdfDocument"] ?? false;

        if ((Boolean)ss)
        {
            Label1.Text = (String)Session["docName"];
        }

Basically I want to check if HttpContext.Current.Session["pdfDocument"] is not null, and if it isn't to cast to Boolean, then check if its true or false.

I'm trying to avoid nested if statements and figured there would be a more elegant way to do it. I'm therefore only interested in answers that contain the conditional ? operator.

Any tips?

Answer 1

Why do you use ss variable?

What about this:

if (HttpContext.Current.Session["pdfDocument"] != null)
{
    Label1.Text = (String)Session["docName"];
}

Answer 2

    object ss = HttpContext.Current.Session["pdfDocument"] ?? false; 
    if ((Boolean)ss) 
    { 
        Label1.Text = (String)Session["docName"]; 
    }