C# C linq和多语言数据库

在我的应用程序中有一个多语言数据库。有必要从用户程序中设置的语言数据库中加载列表。我使用Dbling库，现在花了3天时间来琢磨如何从数据库动态获取数据，构建linq请求。下表列出了以下列：

id | name | en | name | ru

假设默认语言是俄语。然后在初始化应用程序时，您需要使用俄语获取所有信息

DbMetal utility created my class:

    // 
    //  ____  _     __  __      _        _ 
    // |  _ \| |__ |  \/  | ___| |_ __ _| |
    // | | | | '_ \| |\/| |/ _ \ __/ _` | |
    // | |_| | |_) | |  | |  __/ || (_| | |
    // |____/|_.__/|_|  |_|\___|\__\__,_|_|
    //
    // Auto-generated from main on 2016-09-30 22:24:51Z.
    // Please visit http://code.google.com/p/dblinq2007/ for more information.
    //
    using System;
    using System.ComponentModel;
    using System.Data;
    #if MONO_STRICT
        using System.Data.Linq;
    #else   // MONO_STRICT
        using DbLinq.Data.Linq;
        using DbLinq.Vendor;
    #endif  // MONO_STRICT
        using System.Data.Linq.Mapping;
    using System.Diagnostics;

    namespace MMS.Model.Test
    {
        public partial class Main : DataContext
        {

            #region Extensibility Method Declarations
            partial void OnCreated();
            #endregion

            partial void OnCreated()
            {

            }
            public Main(string connectionString) :
                base(connectionString)
            {
                this.OnCreated();
            }

            public Main(string connection, MappingSource mappingSource) :
                base(connection, mappingSource)
            {
                this.OnCreated();
            }

            public Main(IDbConnection connection, MappingSource mappingSource) :
                base(connection, mappingSource)
            {
                this.OnCreated();
            }
    public Table<ListLips> ListLips
            {
                get
                {
                    return this.GetTable<ListLips>();
                }
            }
[Table(Name = "main.list_lips")]
    public partial class ListLips : System.ComponentModel.INotifyPropertyChanging, System.ComponentModel.INotifyPropertyChanged
    {

        private static System.ComponentModel.PropertyChangingEventArgs emptyChangingEventArgs = new System.ComponentModel.PropertyChangingEventArgs("");

        private int _id;

        private string _nameRu;

        private string _nameEn;

        #region Extensibility Method Declarations
        partial void OnCreated();

        partial void OnIDChanged();

        partial void OnIDChanging(int value);

        partial void OnNameRuChanged();

        partial void OnNameRuChanging(string value);

        partial void OnNameENChanged();

        partial void OnNameENChanging(string value);
        #endregion


        public ListLips()
        {
            this.OnCreated();
        }

        [Column(Storage = "_id", Name = "id", DbType = "INTEGER", IsPrimaryKey = true, IsDbGenerated = true, AutoSync = AutoSync.Never, CanBeNull = false)]
        [DebuggerNonUserCode()]
        public int ID
        {
            get
            {
                return this._id;
            }
            set
            {
                if ((_id != value))
                {
                    this.OnIDChanging(value);
                    this.SendPropertyChanging();
                    this._id = value;
                    this.SendPropertyChanged("ID");
                    this.OnIDChanged();
                }
            }
        }

        [Column(Storage = "_nameRu", Name = "name_ru", DbType = "VARCHAR (30)", AutoSync = AutoSync.Never)]
        [DebuggerNonUserCode()]
        public string NameRu
        {
            get
            {
                return this._nameRu;
            }
            set
            {
                if (((_nameRu == value)
                            == false))
                {
                    this.OnNameRuChanging(value);
                    this.SendPropertyChanging();
                    this._nameRu = value;
                    this.SendPropertyChanged("NameRu");
                    this.OnNameRuChanged();
                }
            }
        }

        [Column(Storage = "_nameEn", Name = "name_en", DbType = "VARCHAR (30)", AutoSync = AutoSync.Never)]
        [DebuggerNonUserCode()]
        public string NameEN
        {
            get
            {
                return this._nameEn;
            }
            set
            {
                if (((_nameEn == value)
                            == false))
                {
                    this.OnNameENChanging(value);
                    this.SendPropertyChanging();
                    this._nameEn = value;
                    this.SendPropertyChanged("NameEN");
                    this.OnNameENChanged();
                }
            }
        }

        public event System.ComponentModel.PropertyChangingEventHandler PropertyChanging;

        public event System.ComponentModel.PropertyChangedEventHandler PropertyChanged;

        protected virtual void SendPropertyChanging()
        {
            System.ComponentModel.PropertyChangingEventHandler h = this.PropertyChanging;
            if ((h != null))
            {
                h(this, emptyChangingEventArgs);
            }
        }

        protected virtual void SendPropertyChanged(string propertyName)
        {
            System.ComponentModel.PropertyChangedEventHandler h = this.PropertyChanged;
            if ((h != null))
            {
                h(this, new System.ComponentModel.PropertyChangedEventArgs(propertyName));
            }
        }
    }
       }
}

现在我提出请求：

public class PersonInformationModel 
    {

        private static string language = "ru" // We assume that this is the current language;


        public List<MMS.Model.POCO.ListRegistered> GetRegisteredList()
        {
            Main dbContext = new Main(DatabaseConnect.GetConnectionContext(), new SqliteVendor());

var q = (from o in dbContext.ListRegistered select new MMS.Model.POCO.ListRegistered() {
     Name = // <------- How do I get here to dynamically o.NameRu or o.NameEn???
});
}
}

---

只有在LINQ中有一个用于翻译的表，而不是每种语言1列的情况下，才很容易做到这一点，因为每种语言都非常不可伸缩，而且以后还会伤害到您

---

在您的情况下，最好是在Poco中为name添加一个属性，并使用getter执行该逻辑，即根据您想要的语言在开关中返回正确的列。没有办法神奇地选择一列

知道这一切很好，但你可能想问一个实际的问题。

public class PersonInformationModel 
    {

        private static string language = "ru" // We assume that this is the current language;


        public List<MMS.Model.POCO.ListRegistered> GetRegisteredList()
        {
            Main dbContext = new Main(DatabaseConnect.GetConnectionContext(), new SqliteVendor());

var q = (from o in dbContext.ListRegistered select new MMS.Model.POCO.ListRegistered() {
     Name = // <------- How do I get here to dynamically o.NameRu or o.NameEn???
});
}
}