如何实现Expression <func <t，bool =“”>＆gt;类型的方法哪里

Question

所以我有一个存储库抽象类，其方法名为GetMany，如下所示：

公共虚拟IEnumerable GetMany（表达式＆gt; where）

如何在派生类中实现它？

基础设施：

public abstract class RepositoryBase<T> where T : class
    {
        #region Properties
        private ApplicationDbContext dataContext;
        private readonly IDbSet<T> dbSet;

        protected IDbFactory DbFactory
        {
            get;
            private set;
        }

        protected ApplicationDbContext DbContext
        {
            get { return dataContext ?? (dataContext = DbFactory.Init()); }
        }
        #endregion

        protected RepositoryBase(IDbFactory dbFactory)
        {
            DbFactory = dbFactory;
            dbSet = DbContext.Set<T>();
        }

        #region Implementation
        public virtual IEnumerable<T> GetMany(Expression<Func<T, bool>> where)
        {
            return dbSet.Where(where).ToList();
        }

        #endregion

    }

服务：

public interface IRepositoryBase<T> where T : class
    {
        RepositoryBase<T> GetBase<T>();
    }
    public class ApplicationUserManager : UserManager<ApplicationUser, int>, IRepositoryBase<AppAccessPolicy>
    {
        public ApplicationUserManager(IUserStore<ApplicationUser, int> store)
            : base(store)
        {
            PasswordValidator = new CustomPasswordValidator();
        }

        private RepositoryBase<T> GetBase<T>()
        {
            var baseClass = GetBase<T>();
            return baseClass;
        }


        public override IEnumerable<AppInstitution> GetMany(Expression<Func<AppInstitution, bool>> where)
        {
            return dbSet.Where(where).ToList();
        } 

       . . . .
 }

我需要知道如何正确实现这部分：

public override IEnumerable GetMany（Expression＆gt; where）         {             return dbSet.Where（where）.ToList（）;         }