How to get set session variables in ASP?

How to get set session variables in ASP.NET?
How to get set session variables in ASP (c#)?
How to get set session variables at ASP?

1 //Get session value:
2 
3 int sessionValue = ((int)Context.Session.Contents["myValue"]);
4 
5 
6 //Set session value:
7 
8 Context.Session.Add("mySessionValue", 1001);