c# - The best way to pass SDF objects between forms -

I want to find the best way to pass the object from SQL Server CE database into my desktop Winforms application to reduce memory. Am use

I have a local database connected to the project by a .sdf generated DBML.

In addition I have 4 forms:

1. Mainform - A main parent form with the button to select the product object.

   ProductSelectForm - Form to select the product from the database. > Main Product Format - MDI children displaying information and charts about the selected product and button to edit this information.

   ProductForm - The form can add or edit new product about the selected product.

   I see two options: either to pass the item ID or pass the item object.

   Based on the example given below, by ID or by object: What would be the best way to pass the information between the form?

   Perhaps other recommendations?

   M Ann form:

     Public ManForm () {Initialize Component (); } Private Zero ProductSelectBarButton_ItemClick (Object Sender, ItemClickEventArgs e) {ProductSelectForm PSF = New ProductSelectForm (); If (psf. Shodiology () == Dialog Result. OK) {Main Productform MPF = New MainPaintForm (PSF Product Selected); MPF.MdiParent = This; MPF.Show (); } PSF.Dispose (); }   
    ProductSelectForm:    public product ProductSelected = null; Public Product Styleform () {Initial Group (); } Private Zero OKButton_Click (Object Sender, EventArgs e) {var ActiveItem = ProductGrid.GetFocusedRowCellValue ("Product_ID"); Selected from the product = db.product. Where (x = & gt; x.Product_ID == (at) active item). Single (); This.Close (); }   
    Main product form:  
     public product cProduct; Public MainProductForm (Product Products) {InitializeComponent (); CProduct = Products; this. Text = cProduct.Product_Name; } Private Zero ProductEditBarButton_ItemClick (Object Sender, ItemClickEventArgs E) {ProductForm PF = New ProductForm (EditMode.Edit, cProduct.Product_ID); PF.ShowDialog (); PF.Dispose (); Form_Refresh (); }   
    Product Form:  
     Private Products T = Null; Private editing mode method; Added public product product = faucet; Public product format (edit mode mode): this (mode, 0) {} public product format (edit mode mode, int id) {initialization (); Mode = mode; Switch (mode) {case (EditMode.Add): T = new product (); break; Case (EditMode.Edit): T = CurrentState.cdb.Product.Where (x => x.Product_ID == ID). Single (); Name Edit. Text = t. Product_name; break; }} Private Zero OKButton_Click (Object Sender, EventArgs e) {T.Product_Name = NameEdit.Text; If (mode == EditMode.Add) {DB.Product.InsertOnSubmit (T); } DB. SubmitChanges (); If (mode == EditMode.Add) ProductAdded = DB.Product.Where (x => x.Product_ID == T.Product_ID). Single (); This.Close (); }}    
    
    
    If you pass by ID, then each form will return data It is a lot of work for both the PC  and  for the developer from the database, the possibility of your product is completely negligible memory footprint. So if you have a memory-challenging system (and today means half -One-phone or break-calculator or something else), so if you are not programming in any way Create a system that uses little more memory in favor of lower battery use and few errors due to developer are not needed to change the wheel again in every form.