Problem in Visibility Of Some Controls In My Project

[GR M]

Hi everybody..
Just a Simple question. I'm having a form(Form1) with some controls(Buttons,DatagridView,TextBoxes etc) added to it. At the form load event, I'v hide some of those(buttons, datagridview) Controls. Then from another Form(Form2) I'm calling the first form(Form1) by creating an object(My_Form) of it in form2

dim My_form As New Form1
My_form.mdi_parent=Form_parent
my_form.datagridview.visible= true
My_form.show
 

So, Will the Out Put be shown with the datagridview control on the Form1 or not?
Isn't it very simple??

Bt After almost creating project, suddenly some features of it is not working as stated above.Before It was working well. I'v Checked all the features, bt found no errors or sort of any problem. Could It be the problem of the system or manual error.