c# - 避免有细微差别的重复循环

Question

我在做一个项目，我注意到有很多重复的代码，我想将重复的代码合并到一个方法中。

这是重复代码的示例:

foreach (var glider in gliders)
{
    List<PriceDataModel_New> bestPrices = PriceService.GetBestPrices(prices, glider.Value.No, string.Empty, string.Empty, string.Empty, 1);
    var priceGroups = bestPrices.GroupBy(p => p.SalesCode);
    var salesCodePrice = priceGroups.ToDictionary(k => k.Key, v => v.First());
    AddEmptyines(fieldMapping, lines);
    var last = lines.Last();

    foreach (var keyValuePair in fieldMapping.Postions)
    {
        int index = keyValuePair.Key;
        var key = keyValuePair.Value.InternalHeading;
        InsertInLines(last, key, index, "CODE_Id", modelNo + "_" + glider.Value.No);
        InsertInLines(last, key, index, "ItemId", glider.Value.No);
        InsertInLines(last, key, index, "CODE_OptionalName", (glider.Value.ComponentType + " " + glider.Value.ProductFamily).ToLower());
        InsertInLines(last, key, index, "Attr_Family name", family);
        InsertInLines(last, key, index, "CODE_IsOptional", "true");
        InsertInLines(last, key, index, "Model", modelNo);
        InsertInLines(last, key, index, "CODE_OptionalInfo", glider.Value.Size.ToLower());

        if (AddToLinePrice(salesCodePrice, keyValuePair.Value.InternalHeading, index, last))
            continue;
    }
}

      //AppendLines(seatPads, prices, lines, fieldMapping, "", modelNo, family, "linking.Value.SimpleMaterial", "");

foreach (var seatPad in seatPads)
{
    List<PriceDataModel_New> bestPrices = PriceService.GetBestPrices(prices, seatPad.Value.No, seatPad.Value.Variant.Substring(0, 3), string.Empty, string.Empty, 1);
    var priceGroups = bestPrices.GroupBy(p => p.SalesCode);
    var salesCodePrice = priceGroups.ToDictionary(k => k.Key, v => v.First());
    AddEmptyines(fieldMapping, lines);
    var last = lines.Last();

    foreach (var keyValuePair in fieldMapping.Postions)
    {
        int index = keyValuePair.Key;
        var key = keyValuePair.Value.InternalHeading;
        InsertInLines(last, key, index, "CODE_Id", modelNo + "_" + seatPad.Value.No);
        InsertInLines(last, key, index, "ItemId", seatPad.Value.No);
        InsertInLines(last, key, index, "CODE_OptionalName", seatPad.Value.ModelNo.ToLower());
        InsertInLines(last, key, index, "Attr_Family name", family);
        InsertInLines(last, key, index, "CODE_IsOptional", "true");
        InsertInLines(last, key, index, "Model", modelNo);
        InsertInLines(last, key, index, "CODE_OptionalInfo", seatPad.Value.UpholsteryFabric.ToLower() + " black");

        if (AddToLinePrice(salesCodePrice, keyValuePair.Value.InternalHeading, index, last))
            continue;
    }
}

      //AppendLines(linkingDevices, prices, lines, fieldMapping, "", modelNo, family, "linking.Value.SimpleMaterial", "");

      foreach (var linking in linkingDevices)
      {
          List<PriceDataModel_New> bestPrices = PriceService.GetBestPrices(prices, linking.Value.No, string.Empty, string.Empty, string.Empty, 1);
          var priceGroups = bestPrices.GroupBy(p => p.SalesCode);
          var salesCodePrice = priceGroups.ToDictionary(k => k.Key, v => v.First());
          AddEmptyines(fieldMapping, lines);
          var last = lines.Last();

          foreach (var keyValuePair in fieldMapping.Postions)
          {
              int index = keyValuePair.Key;
              var key = keyValuePair.Value.InternalHeading;
              InsertInLines(last, key, index, "CODE_Id", modelNo + "_" + linking.Value.No);
              InsertInLines(last, key, index, "ItemId", linking.Value.No);
              InsertInLines(last, key, index, "CODE_OptionalName", linking.Value.ComponentType.ToLower());
              InsertInLines(last, key, index, "Attr_Family name", family);
              InsertInLines(last, key, index, "CODE_IsOptional", "true");
              InsertInLines(last, key, index, "Model", modelNo);
              InsertInLines(last, key, index, "CODE_OptionalInfo", linking.Value.SimpleMaterial);

              if (AddToLinePrice(salesCodePrice, keyValuePair.Value.InternalHeading, index, last))
                  continue;
          }
      }

上面的 foreach 循环只有几行不同。我不知道如何使它通用。我已经尝试使用 Reflection、Func<> 和 Delegates，欢迎提出任何建议。

Answer 1

为滑翔机、座垫和 linkingdevices 对象实现类似于下面的接口(interface):

   public interface IProduct
    {
        string No { get; }
        string CodeName { get; }
        string Family { get; }
        string ModelNo { get; }

        string CodeInfo { get; }

        IDictionary<string, string> FieldMapping { get; }
    }

然后创建一个通用函数，例如:

private void Generic<T>(IEnumerable<T> products, string modelNo)
        where T: IProduct

接受产品之外的任何内容(如输入中的 modelNo)并放置产品特定的任何内容(如果此处的“产品”不完全正确，请更改名称)。

可选地，我会更改 Fieldmapping 字典以展平属性，以防万一(我不确定潜在的复杂性):

public interface IProduct
    {
        string No { get; }
        string CodeName { get; }
        string Family { get; }
        string ModelNo { get; }

        string SalesCode { get; }
        string CodeInfo { get; }

        IEnumerable<IProductAttribute> Attributes { get; }
    }

    public interface IProductAttribute
    {
        string InternalHeading { get; }
        int Index { get; } //not sure what this is for.
    }