public EditProductForm(Form1 form1) { InitializeComponent(); this.form1 = form1; this.LayoutMdi(MdiLayout.TileVertical); itemForm = form1.item_form; txtBox_Group.Text = form1.products[itemForm.Selected_Items].Group; txtBox_Name.Text = form1.products[itemForm.Selected_Items].Name; txtBox_Manufacturer.Text = form1.products[itemForm.Selected_Items].Manufecturer; txtBox_Date.Text = form1.products[itemForm.Selected_Items].Date; txtBox_ExpirationDate.Text = form1.products[itemForm.Selected_Items].Expiration; }