How to print out all the variables in the Session?

Answer:

Yes, Using "Session.Keys" we can get all session variables

In VB.NET

Dim strSesVar as string
For Each strSesVar In Session.Keys
Response.Write(strSesVar + " : " + Session(strSesVar).ToString() + "<br>")
Next


In C#

foreach (string strSesVar in Session.Keys)
{
Response.Write(strSesVar + " : " + Session[strSesVar].ToString() + "<br>");
}