c# - 如何使用反射将一种类型转换为另一种类型？

Question

我有两种非常相似的类型(即成员名称非常相似)。

有没有一种优雅的方法可以将一种类型复制到另一种类型，而不必手动复制每个成员？

更新

这里是一些示例源代码:

main()
{
  FromCsvFile x = new FromCsvFile(fileName);
  OptionsEnt y = x.ToOptionsEnt(); // See helper function below.
}

// Chained helper function to convert type "FromCsvFile" to type "OptionsEnt".
// Want to replace this with something more elegant (perhaps with reflection?).
// Notice the corner cases, i.e. the "ExpirationDate" is a special conversion.
public static OptionsEnt ToOptionsEnt(this FromCsvFile fromCsvFile)
{
  return new OptionsEnt
           {
             Last = fromCsvFile.Last,
             Ask = fromCsvFile.Ask,
             Bid = fromCsvFile.Bid,
             Delta = fromCsvFile.Delta,
             EODsnapshotNewYorkTime = fromCsvFile.EODsnapshotNewYorkTime,
             Exchange = fromCsvFile.Exchange,
             ExpirationDate = fromCsvFile.Expiration.ToTypeIceDate(),
             Gamma = fromCsvFile.Gamma,
             IV = fromCsvFile.IV,
             LastDate = fromCsvFile.Date.ToTypeIceDate(),
             AdjustedStockClose = fromCsvFile.AdjustedStockClose,
             MeanPrice = fromCsvFile.MeanPrice,
             OptionType = fromCsvFile.OptionType == "C" ? OptionTypeEnum.enCall : OptionTypeEnum.enPut,
             OpenInterest = fromCsvFile.OpenInterest,
             Rho = fromCsvFile.Rho,
             StockSymbol = fromCsvFile.SymbolStock,
             StrikePrice = fromCsvFile.StrikePrice,
             Symbol = fromCsvFile.Symbol,
             StockPriceForIV = fromCsvFile.StockPriceForIV,
             Star = fromCsvFile.Star,
             Theta = fromCsvFile.Theta,
             Vega = fromCsvFile.Vega,
             Volume = fromCsvFile.Volume,
             IVnotInterpolated = fromCsvFile.IVnotInterpolated
          };
}

更新

决定使用 AutoMapper。

这是替换上面所有代码的代码(假设所有成员名称的名称和类型都相同):

main()
{
  FromCsvFile x = new FromCsvFile(fileName);
  OptionsEnt y = Mapper.Map<FromCsvFile, OptionsEnt>(x);
}

由于我们需要一些自定义转换器(即 DateTime >> IceDateTime)，这里是额外的代码行，其中包含参数“ExpirationDate”的自定义映射。添加此行可避免抛出异常，因为它不知道如何将日期从一种格式转换为另一种格式。

 Mapper.CreateMap<DateTime, typeIceDate>().ConvertUsing(ConverterIceTypeIceDate.ToTypeIceDate);

Answer 1

也许 Automapper ？

例如:

Mapper.CreateMap<FromCsvFile, OptionsEnt >();
return Mapper.Map<FromCsvFile, OptionsEnt>(fromCsvFile);