tempdata variables works like a session variables?
basically i want to do is to when the form loads for the first time the variables should be empty. but the variable should be persisted until i am on that form.
the form contains searching with a submit button as well as the paging .
basically my ques is to use what approach should i use?
TempData vs. Session has been covered before:
When to use TempData vs Session in ASP.Net MVC
I'm not quite sure I follow the rest of your question, though. But I suspect that link may provide you with enough information for more research on the subject to make a more informed decision. (It may also get you closed as a duplicate. I would have put it in a comment, but wanted to be more verbose.)
Sounds like what your looking for is something simular to ViewState. Model binding is what you want to look at in MVC.
