public interface IUser
    {
        IQueryable<WebManageUsers> GetEntities();
    }
   public class UserRepository : BackgroundRepository<WebManageUsers>, IUser
    {
        public IQueryable<WebManageUsers> GetEntities()
        {
            return this.GetModel();
        }
    }

   using (IUnityContainer container = new UnityContainer())
                {
                   container.RegisterType<IUser, DataTest.UserRepository>();
                    var repository = container.Resolve<IUser>();
                }

  <unity xmlns="//schemas.microsoft.com/practices/2010/unity">
    <container>
      <register  type="EntityTest.IUser,EntityTest" mapTo="DataTest.UserRepository, DataTest" />
       </container>
  </unity>

 using (IUnityContainer container = new UnityContainer())
                {
                    ConfigurationManager.GetSection("unity");
                    UnityConfigurationSection.CurrentSection.Configure(container);
                    var repository = container.Resolve<IUser>();
                }

 /// <summary>
    /// 基礎(chu)的數(shu)據操作規范
    /// </summary>
    /// <typeparam name="TEntity"></typeparam>
    public interface IRepository<TEntity>
           where TEntity : class
    {
        /// <summary>
        /// 添(tian)加實(shi)體并提交到數據服務器
        /// </summary>
        /// <param name="item">Item to add to repository</param>
        void Insert(TEntity item);

        /// <summary>
        /// 移(yi)除實體并提交到數據服務器
        /// 如果表(biao)存在(zai)約(yue)束(shu)，需要先刪除子表(biao)信(xin)息(xi)
        /// </summary>
        /// <param name="item">Item to delete</param>
        void Delete(TEntity item);

        /// <summary>
        /// 修(xiu)改(gai)實體(ti)并提交到數(shu)據服(fu)務器
        /// </summary>
        /// <param name="item"></param>
        void Update(TEntity item);

        /// <summary>
        /// 得到(dao)指(zhi)定的實(shi)體集合(he)（延時(shi)結果集）
        /// Get all elements of type {T} in repository
        /// </summary>
        /// <returns>List of selected elements</returns>
        IQueryable<TEntity> GetModel();

        /// <summary>
        /// 根(gen)據主鍵得到(dao)實體(ti)
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        TEntity Find(params object[] id);
    }
    public class BackgroundRepository<T> : IRepository<T> where T : class
    {
#region IRepository<TEntity> 成員

        public virtual void Insert(TEntity item)
        {
            OnBeforeSaved(new SavedEventArgs(item, SaveAction.Insert));
            Db.Entry<TEntity>(item);
            Db.Set<TEntity>().Add(item);
            this.SaveChanges();
            OnAfterSaved(new SavedEventArgs(item, SaveAction.Insert));
        }

        public virtual void Delete(TEntity item)
        {
            OnBeforeSaved(new SavedEventArgs(item, SaveAction.Delete));
            Db.Set<TEntity>().Attach(item);
            Db.Set<TEntity>().Remove(item);
            this.SaveChanges();
            OnAfterSaved(new SavedEventArgs(item, SaveAction.Delete));
        }

        public virtual void Update(TEntity item)
        {
            OnBeforeSaved(new SavedEventArgs(item, SaveAction.Update));
            Db.Set<TEntity>().Attach(item);
            Db.Entry(item).State = EntityState.Modified;
            this.SaveChanges();
            OnAfterSaved(new SavedEventArgs(item, SaveAction.Update));
        }

        /// <summary>
        /// 子(zi)類(lei)在實(shi)現時，可以(yi)重寫，加(jia)一些狀態過濾(lv)
        /// </summary>
        /// <returns></returns>
        public virtual IQueryable<TEntity> GetModel()
        {
            //  return Db.Set<TEntity>().AsNoTracking();//對象無(wu)法自動添(tian)加到上下文中，因為它是使用 NoTracking 合并選項檢(jian)索(suo)的。請在定義此關(guan)系(xi)之前(qian)，將(jiang)該實(shi)體顯式附(fu)加到 ObjectContext。
            return Db.Set<TEntity>();////ObjectStateManager 中已存在具(ju)有(you)(you)同一鍵的對(dui)象(xiang)。ObjectStateManager 無(wu)法跟蹤具(ju)有(you)(you)相同鍵的多個對(dui)象(xiang)。
        }
        /// <summary>
        /// 得到原生態結果集
        /// </summary>
        /// <returns></returns>
        public IQueryable<TEntity> GetEntities()
        {
            return Db.Set<TEntity>();
        }
        #endregion
　｝

  using (IUnityContainer container = new UnityContainer())
                {
                   container.RegisterType<IRepository<User>, BackgroundRepository<User>>();
                    var re = container.Resolve<IRepository<User>>();
                }

  <unity xmlns="//schemas.microsoft.com/practices/2010/unity">
    <container>
         <register  type="IRepository.Core.IRepository`1,IRepository.Core" mapTo="DataTest.BackgroundRepository`1, DataTest" />
    </container>
  </unity>

  using (IUnityContainer container = new UnityContainer())
                {
                    ConfigurationManager.GetSection("unity");
                    UnityConfigurationSection.CurrentSection.Configure(container);
                 var re = container.Resolve<IRepository<User>>();
                }

  /// <summary>
    /// Represents the Service Locator.
    /// </summary>
    public sealed class ServiceLocator : IServiceProvider
    {
        #region Private Fields
        private readonly IUnityContainer _container;
        #endregion

        #region Private Static Fields
        private static readonly ServiceLocator instance = new ServiceLocator();
        #endregion

        #region Ctor
        /// <summary>
        /// Initializes a new instance of ServiceLocator class.
        /// </summary>
        private ServiceLocator()
        {
            UnityConfigurationSection section = (UnityConfigurationSection)ConfigurationManager.GetSection("unity");
            _container = new UnityContainer();
            section.Configure(_container);
        }
        #endregion

        #region Public Static Properties
        /// <summary>
        /// Gets the singleton instance of the ServiceLocator class.
        /// </summary>
        public static ServiceLocator Instance
        {
            get { return instance; }
        }
        #endregion

        #region Private Methods
        private IEnumerable<ParameterOverride> GetParameterOverrides(object overridedArguments)
        {
            List<ParameterOverride> overrides = new List<ParameterOverride>();
            Type argumentsType = overridedArguments.GetType();
            argumentsType.GetProperties(BindingFlags.Public | BindingFlags.Instance)
                .ToList()
                .ForEach(property =>
                {
                    var propertyValue = property.GetValue(overridedArguments, null);
                    var propertyName = property.Name;
                    overrides.Add(new ParameterOverride(propertyName, propertyValue));
                });
            return overrides;
        }
        #endregion

        #region Public Methods
        /// <summary>
        /// Gets the service instance with the given type.
        /// </summary>
        /// <typeparam name="T">The type of the service.</typeparam>
        /// <returns>The service instance.</returns>
        public T GetService<T>()
        {
            return _container.Resolve<T>();
        }
        /// <summary>
        /// Gets the service instance with the given type by using the overrided arguments.
        /// </summary>
        /// <typeparam name="T">The type of the service.</typeparam>
        /// <param name="overridedArguments">The overrided arguments.</param>
        /// <returns>The service instance.</returns>
        public T GetService<T>(object overridedArguments)
        {
            var overrides = GetParameterOverrides(overridedArguments);
            return _container.Resolve<T>(overrides.ToArray());
        }
        /// <summary>
        /// Gets the service instance with the given type by using the overrided arguments.
        /// </summary>
        /// <param name="serviceType">The type of the service.</param>
        /// <param name="overridedArguments">The overrided arguments.</param>
        /// <returns>The service instance.</returns>
        public object GetService(Type serviceType, object overridedArguments)
        {
            var overrides = GetParameterOverrides(overridedArguments);
            return _container.Resolve(serviceType, overrides.ToArray());
        }
        #endregion

        #region IServiceProvider Members
        /// <summary>
        /// Gets the service instance with the given type.
        /// </summary>
        /// <param name="serviceType">The type of the service.</param>
        /// <returns>The service instance.</returns>
        public object GetService(Type serviceType)
        {
            return _container.Resolve(serviceType);
        }

        #endregion
    }

 var model = ServiceLocator.Instance.GetService<IExtensionRepository<WebManageUsers>>().GetModel().ToList();