Session object changes when object is updated in C#

Question

I have this really weird problem and I\'m sure I\'m missing something obvious here. I have these two lines:

HttpContext.Current.Session[listModelType + \"Lis         


        

Answer 1

See value types and reference types.

The int is a value type so will be stored "as-is" on the moment of assignment; your listModel is a reference type so you store a reference to the object in your session, not the value of the object.

You'll have to create a new instance of listModel if you want the one in your session untouched.