VS 2005 Loading And Hiding A Form?

i am hiding a form and showing another form by this bit of

form1.show()
form2.hide()
form 2 contains of a dgv and by the form1 i am editing the contents of the dgv present in the form 2.......

after making the changes when again i show the form2 and hide the form1,then the changes made did not appears in the form2............

i have this bit of code at the form load of the form2:

con = New OleDbConnection("Provider=Microsoft.Jet.Oledb.4.0;Data Source=LibraryManagement.mdb")
con.Open()

[Code]....

now when i close my application and again reload it then then changes that i made appears in the dgv of the form2........

if i am showing the hidden form then at the time of showing it,does the form load event of the hidden form is raised?

or,

the hidden form is already loaded and there is NO form load event and only the form is shown and hidden...