private void tsmStockInventory_Click(object sender, EventArgs e)
{
StockInventoryUI _StockInventory = new StockInventoryUI();
TabPage _StockInventoryTab = new TabPage();
_StockInventoryTab.ImageIndex = 26;
_StockInventory.ParentList = this;
displayControlOnTab(_StockInventory, _StockInventoryTab);
}