static decimal FindSupplierIncomesForPeriodOfTime(string name, DateTime startDate, DateTime endDate)
{
using (NorthwindEntities nwDb = new NorthwindEntities())
{
var outputParameter = new ObjectParameter("result", typeof(decimal));
nwDb.FindTotalSupplierIncomes(name, startDate, endDate, outputParameter);
return(decimal.Parse(outputParameter.Value.ToString()));
}
}
