使用.Net中的另一個相同類型的對象更新對象的最佳方法是什麼？

Question

已經提出了類似的問題，但是找不到可行的解決方案。 我所擁有的是一個相當大的對象（Viper對象），它有幾個子對象和列表。我將每秒收到一個Viper對象的新實例，我需要將這些數據合併到一個「主」Viper對象中。如果該屬性爲空，則跳過它，如果不替換它。一些屬性是列表只會被新屬性取代，一些列表屬性會將新列表追加到現有列表中。

要點是，有些屬性需要一些自定義邏輯來確定如何執行合併。問題是我應該使用像AutoMapper/Value Injector之類的東西，還是隻在需要另一個Viper對象的數據模型中編寫自定義Merge命令？這需要儘可能高效，因爲它會被稱爲很多。

下面是數據模型：

public class Viper 
{ 
    #region INotifyPropertyChanged Members 
    public event PropertyChangedEventHandler PropertyChanged; 

    protected void OnPropertyChanged(string property) 
    { 
     if (PropertyChanged != null) 
     { 
      PropertyChanged(this, new PropertyChangedEventArgs(property)); 
     } 
    } 
    #endregion 

    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public int ViperId { get; set; } 

    [DataMember] 
    public int CaseId { get; set; } 

    [DataMember] 
    public int RecordCount { get; set; } 

    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public string SerialNumber { get; set; } 

    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public string UserName { get; set; } 

    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public string GroupName { get; set; } 

    [DataMember] 
    public Byte Status { get; set; } 
    [DataMember] 
    public int CaseStage { get; set; } 

    [DataMember(IsRequired = false,EmitDefaultValue = false)] 
    public CaseDetail CaseDetail { get; set; } 

    private ViperMetaData _metaData; 
    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public ViperMetaData MetaData { 
     get { return _metaData; } 
     set 
     { 
      _metaData = value; 
      OnPropertyChanged("MetaData"); 
     } 
    } 

    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public List<CasePatientData> PatientDetailsTable1 { get; set; } 
    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public List<CasePatientData> PatientDetailsTable2 { get; set; } 
    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public List<CasePatientData> PatientDetailsTable3 { get; set; } 
    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public List<CasePatientData> PatientDetailsTable4 { get; set; } 

    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public List<CaseChannel> CaseChannelDataList { get; set; } // list of all channels available in a specific case/viper 

    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public List<EventsData> EventsDataList { get; set; } 


    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public List<ChannelData> ChannelDataList { get; set; } 

    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public CasePatientDetails CasePatientDetails { get; set; } 

    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public List<CaseFluids> CaseFluidsList { get; set; } 

    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public List<PatientTable> PatientTableNames { get; set; } 

    [DataMember] 
    public int? TimeOffset { get; set; } 

    [DataMember(IsRequired = false,EmitDefaultValue = false)] 
    public string Html { get; set; } 

    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public List<CaseDocument> CaseDocuments { get; set; } 
    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public Department Department { get; set; } 
    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public List<Gauge> Gauges { get; set; } 
    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public List<Region> Regions { get; set; } 
    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public List<BloodGasData> BloodGasDataList { get; set; } 
    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public List<CardioplegiaData> CardioplegiaDataList { get; set; } 
    [DataMember(IsRequired = false, EmitDefaultValue = false)] 
    public List<ComplianceDataUnit> ComplianceDataList { get; set; } 
} 

Answer 1

正如你所說，我會用自動映射或價值注射器。特別是如果您的屬性名稱與對象相似，則幾乎不需要編寫任何代碼。對於自定義映射，編寫自定義函數以傳遞給映射方法非常簡單。很有用。什麼會像快速僞代碼：

AutoMapper.Mapper.CreateMap<Viper, ViperDto>() 
    .ForMember(dest => dest.Property, opt => opt.NullSubstitute("N/A")); 
var merged = AutoMapper.Mapper.Map(viper, viperDTO);