When creating an ASP.NET Web Site in Visual COBOL a run-time error occurs when trying to store an object into the Session object.
This is ocurring because the Session object is not being instantiated so a NULL reference error occurs.

Example: code behind program snippet for web page:

class-id ShoppingCart is partial inherits type Page.

           set mycontext to type System.Web.HttpContext::Current
           set mystring to "TestSession"
           set mycontext::Session::Item("TestItems") to mystring
 
*> An error occurs on the above statement

Creating an ASP.NET Web Site in COBOL is quite different than creating an ASP.NET Web Project in that the latter has a Global.asax that handles Session_Start events that populates the session object.

However, a simple change to the web page code behind file ".cbl", will allow you to get the same desired behavior.
Just add :

    implements type System.Web.SessionState.IRequiresSessionState.

to the class-id of the page.

Example:

class-id ShoppingCart is partial inherits type Page implements type System.Web.SessionState.IRequiresSessionState.

This will allow you to store and retrieve objects into the Session object by using code like:

           set mycontext to type System.Web.HttpContext::Current
           set mystring to "TestSession"
           set mycontext::Session::Item("TestItems") to mystring