c# - 将这两种方法合二为一

Question

大家好，我有两个类，我有两个方法，我将这两个类分别传递给方法并检查name和NarrativeHTML呈现项目符号列表。

public class LibraryHydronicEquipment : AEIMasterBase
{
    public string Name { get; set; }
    public HydronicEquipmentType? Type { get; set; }
    [Column(TypeName = "jsonb")]
    public List<HydronicSystemType> Systems { get; set; }
    [Column(TypeName = "jsonb")]
    public List<EquipmentProperty> Properties { get; set; }
    public string NarrativeHTML { get; set; }
}

public class LibrarySteamEquipment : AEIMasterBase
{
    public string Name { get; set; }
    public SteamEquipmentType? Type { get; set; }
    [Column(TypeName = "jsonb")]
    public List<SteamSystemType> Systems { get; set; }
    [Column(TypeName = "jsonb")]
    public List<EquipmentProperty> Properties { get; set; }
    public string NarrativeHTML { get; set; }
  }

方法一：

  private void BuildBulletedList(List<LibraryHydronicEquipment> libraryHydronicEquipments)
  {
        List<Run> labels = new List<Run>();
        foreach (var equipmentItem in libraryHydronicEquipments)
        {
            if (!string.IsNullOrEmpty(equipmentItem.NarrativeHTML))
            {
                var htmlRuns = this.DocumentHtmlConverter.Parse(equipmentItem.NarrativeHTML)
                                                         .First()
                                                         .ChildElements
                                                         .Where(c => c is Run)
                                                         .Cast<Run>()
                                                         .Select(n => n.CloneNode(true));
                labels.Add(new Run(htmlRuns));
            }
            else if (!string.IsNullOrEmpty(equipmentItem.Name))
            {
                labels.Add(new Run(new Text(equipmentItem.Name)));
            }
        }
        BuildList(labels);
  }

方法二

  private void BuildBulletedList(List<LibrarySteamEquipment> librarySteamEquipments)
  {
        List<Run> labels = new List<Run>();
        foreach (var equipmentItem in librarySteamEquipments)
        {
            if (!string.IsNullOrEmpty(equipmentItem.NarrativeHTML))
            {
                var htmlRuns = this.DocumentHtmlConverter.Parse(equipmentItem.NarrativeHTML)
                                                         .First()
                                                         .ChildElements
                                                         .Where(c => c is Run)
                                                         .Cast<Run>()
                                                         .Select(n => n.CloneNode(true));
                labels.Add(new Run(htmlRuns));
            }
            else if (!string.IsNullOrEmpty(equipmentItem.Name))
            {
                labels.Add(new Run(new Text(equipmentItem.Name)));
            }
        }
        BuildList(labels);
  }

我正在调用这些方法，如下所示

if (hydronicSystem.Equipment.Source.Count != 0)
{                       
      BuildBulletedList(hydronicSystem.Equipment.Source);
}
   
if (steamSystem.Equipment.Source.Count != 0)
{
     BuildBulletedList(steamSystem.Equipment.Source);
}

更新 ：

 if (hydronicSystem.Equipment.Source.Count != 0)
 {
      BuildBulletedList(hydronicSystem.Equipment.Source);
 }
 if (hydronicSystem.Equipment.Distribution.Count != 0)
 {
      BuildBulletedList(hydronicSystem.Equipment.Distribution);
 }
 if (hydronicSystem.Equipment.Terminals.Count != 0)
 {
      BuildBulletedList(hydronicSystem.Equipment.Terminals);
 }
        

有什么方法可以将这两种方法组合成一个通用方法？

提前致谢！！

标签： c#.netlinqgenerics

Answer 1

将共享成员移动到基本类型

public interface IRender {
    string Name { get; set; }
    string NarrativeHTML { get; set; }
}

并让类派生自该类型

public class LibraryHydronicEquipment : AEIMasterBase, IRender {
    public string Name { get; set; }
    public HydronicEquipmentType? Type { get; set; }
    [Column(TypeName = "jsonb")]
    public List<HydronicSystemType> Systems { get; set; }
    [Column(TypeName = "jsonb")]
    public List<EquipmentProperty> Properties { get; set; }
    public string NarrativeHTML { get; set; }
}

public class LibrarySteamEquipment : AEIMasterBase, IRender {
    public string Name { get; set; }
    public SteamEquipmentType? Type { get; set; }
    [Column(TypeName = "jsonb")]
    public List<SteamSystemType> Systems { get; set; }
    [Column(TypeName = "jsonb")]
    public List<EquipmentProperty> Properties { get; set; }
    public string NarrativeHTML { get; set; }
}

然后通过泛型重构该方法以依赖于该类型

private void BuildBulletedList<T>(IEnumerable<T> items) where T : IRender {
    List<Run> labels = new List<Run>();
    foreach (T item in items) {
        if (!string.IsNullOrEmpty(item.NarrativeHTML)) {
            var htmlRuns = DocumentHtmlConverter
                .Parse(item.NarrativeHTML)
                .First()
                .ChildElements
                .Where(c => c is Run)
                .Cast<Run>()
                .Select(n => n.CloneNode(true));
            labels.Add(new Run(htmlRuns));
        } else if (!string.IsNullOrEmpty(item.Name)) {
            labels.Add(new Run(new Text(item.Name)));
        }
    }
    BuildList(labels);
}

现在进行一次调用，连接列表，然后检查是否可以构建项目符号列表。

var source = hydronicSystem.Equipment.Source.Cast<IRender>();
var distribution = hydronicSystem.Equipment.Distribution.Cast<IRender>();
var terminals = hydronicSystem.Equipment.Terminals.Cast<IRender>();

var bullets = source.Concat(distribution).Concat(terminals);
if (bullets.Any()) {
    BuildBulletedList(bullets);
}