检查会话是否存在，如果没有在VB.Net中创建新会话

Question

I'm new to this so I'm having a difficult time figuring this thing.

I have a ASP.Net application which has two controls, 'lblSessionState' which has a value - "There is no session"
'btnSessionState' which has a value - "Start Session"

What i want to know is how to check whether a Session exists. For example, how do I check whether there is a Session called "MySession" and if that exists how to assign its value to 'lblSessionState' as text value.

If "MySession" does not exist how do I create it and assign a value.

Also I want to know when a button is clicked how to detect the post back and clear the session.

Thank you so much in advance.....

Answer 1

HYG

if(Session["MySession"]==null)
    Session["MySession"] = "Your value";

lblSessionState.Text = Session["MySession"].ToString();

check the following link for more details http://www.w3schools.com/asp/asp_sessions.asp