Values retaiing between post backs

Question

hi frnds


i have a 'registration page' and 'preview page' after entering registration details preview page wil display... i have two buttons in preview page one button for 'save' and second for 'edit' which redirects again to registration page for editing previous details....

but i click edit it redirtects to registration page but all the values previous entered are erasing...


so please tell me how to handle state managamant for my problem...

how to use query string while redirecting ...

what is the logic here?





please send me in C# codeing


thanx in advance