private void FrmOpenTakingInventory_Load(object sender, EventArgs e) { INVInventoryService inventoryService = new INVInventoryService(); cmb_inventory.DataSource = inventoryService.SelectAll(); cmb_inventory.DisplayMember = "InventoryName"; cmb_inventory.ValueMember = "InventoryID"; BDProductService productService = new BDProductService(); cmb_Product.DataSource = productService.SelectAll(); cmb_Product.DisplayMember = "ProductName"; cmb_Product.ValueMember = "ProductID"; BDProductGroupService productGroupService = new BDProductGroupService(); cmb_productGroup.DataSource = productGroupService.SelectAll(); cmb_productGroup.DisplayMember = "ProductGroupName"; cmb_productGroup.ValueMember = "ProductGroupID"; ResetFields(); }