public List <Currency> GetCurrencyDataByProvider_itemList(List <Provider_item> provider_itemList)
{
List <Currency> result = new List <Currency>();
foreach (Provider_item provider_item in provider_itemList)
{
var currencyFoundList = _dataSet.GetCurrencyDataByProvider_item(provider_item);
if (currencyFoundList.Count() > 0)
{
result.Add(currencyFoundList.First());
}
}
return(result);
}