need some help with serialize and deserialize

Question

i am using windows form to create a main form, which then passes the info to the sub form. from there i want to save it as a new form file so i can later re-open it. it the save as button i put the code but when it saves the file i klater reopen it to find a blank screen. i have created a instance and thought passe it to a stream but i get nothing can anyone help? if you would like to see what i mean i have created a zip file but do not know how to attach it to this post so i will email it if anyone is interested in it. i am a student learning c sharp and my instructor imagines that every one in class is up to par as he is. i need some help if any one can. thanx