private void GetItem()
{
messageLabel.InnerText = String.Empty;
var itemName = itemDropDownList.SelectedItem.Text;
item = itemManager.GetByName(itemName);
var companyId = Convert.ToInt32(companyDropDownList.SelectedValue);
stockIn = stockInManager.Get(item.Name, companyId);
availableQuantityTextBox.Text = stockIn.Quantity.ToString();
recorderLevelTextBox.Text = item.RecorderLevel.ToString();
}