While redirecting from page to page generally i used to pass values as querystring but as you know query string is not a good approach as there are many security concerns and more over its having a maximum size is of 256 Bytes or ie length 2048 characters. So is it a good approach to access variables by setting previous page ie `"<%@ PreviousPageType VirtualPath="" %>"` and accessing previous page items

Please let me know, is there any other way for passing variables other than `Sessions` and is using Previous page concept a Good Approach?