/// <summary>
/// 添加船舶
/// </summary>
/// <param name="ID">实体主键</param>
/// <returns></returns>
public void Delete(string ID)
{
ExchangeRateInfo cInfo = new ExchangeRateInfo();
cInfo.ID = ID;
dal.Delete(cInfo);
}
/// <summary>
/// 添加船舶
/// </summary>
/// <param name="cInfo">实体</param>
/// <returns>新增实体的主键</returns>
public string Add(ExchangeRateInfo cInfo)
{
return dal.Add(cInfo);
}
/// <summary>
/// 更新船舶
/// </summary>
/// <param name="cInfo">实体</param>
public void Update(ExchangeRateInfo cInfo)
{
if (string.IsNullOrEmpty(cInfo.ID))
{
throw new ArgumentNullException("参数ID不能为空。");
}
dal.Update(cInfo);
}
/// <summary>
/// 获取对应比重某月的汇率
/// </summary>
/// <param name="currencyID"></param>
/// <param name="year"></param>
/// <param name="month"></param>
/// <returns></returns>
public ExchangeRateInfo GetInfo(string currencyID, int year, int month)
{
if (string.IsNullOrEmpty(currencyID))
{
throw new ArgumentNullException("currencyID不能为空。");
}
if (year < 1970 || year > 2050 || month > 12 || month < 1)
{
throw new ArgumentNullException("年份或者月份超过有效期。");
}
ExchangeRateInfo eInfo = new ExchangeRateInfo();
if (currencyID == "1")
{
eInfo.CurrencyID = currencyID;
eInfo.Rate = "1";
}
else
{
eInfo = dal.GetInfo(currencyID, year, month);
}
return eInfo;
}