private void GetQuantityByCompanyItem(StockInViewModel stockInViewModel)
{
stockInViewModel = stockInManager.GetQuantityByCompanyAndItem(stockInViewModel);
//availableQuantityTextBox.Text = stockInModel.AvailableQuantity.ToString();
if (stockInViewModel == null)
{
availableQuantityTextBox.Text = "0";
}
else
{
availableQuantityTextBox.Text = stockInViewModel.Quantity.ToString();
}
}