Wrong page data with Entity Framework Core

Recently Im trying to upgrade My MVC project to dotnetCore project, while something went wrong in BaseService..

my former MVC code which works good:

public List<TEntity> FindList(Expression<Func<TEntity, bool>> predicate, Pagination pagination)
{
        using (var ent = new Entities())//  System.Data.Entity.DbContext
        {
            bool isAsc = pagination.sord.ToLower() == "asc";
            string[] order = pagination.sidx.Split(',');
            MethodCallExpression resultExp = null;
            var tempData = ent.Set<TEntity>().Where(predicate);
            foreach (string item in order)
            {
                string orderPart = item;
                orderPart = Regex.Replace(orderPart, @"\s+", " ");
                string[] orderArry = orderPart.Split(' ');
                string orderField = orderArry[0];
                if (orderArry.Length == 2)
                {
                    isAsc = orderArry[1].ToUpper() == "ASC";
                }
                var parameter = Expression.Parameter(typeof(TEntity), "t");
                var property = typeof(TEntity).GetProperty(orderField);
                if (property != null)
                {
                    var propertyAccess = Expression.MakeMemberAccess(parameter, property);
                    var orderByExp = Expression.Lambda(propertyAccess, parameter);
                    resultExp = Expression.Call(typeof(Queryable), isAsc ? "OrderBy" : "OrderByDescending", new Type[] { typeof(TEntity), property.PropertyType }, tempData.Expression, Expression.Quote(orderByExp));
                }
            }
            if (resultExp != null) tempData = tempData.Provider.CreateQuery<TEntity>(resultExp);
            pagination.records = tempData.Count();
            tempData = tempData.Skip<TEntity>(pagination.rows * (pagination.page - 1)).Take<TEntity>(pagination.rows).AsQueryable();
            return tempData.ToList();
        }
}

and the dotnetCore code:

public async Task<List<TEntity>> FindList(Expression<Func<TEntity, bool>> predicate, Pagination pagination)
{
        bool isAsc = pagination.sord.ToLower() == "asc";
        string[] order = pagination.sidx.Split(',');
        MethodCallExpression resultExp = null;
        var tempData = DbSet.Where(predicate);//a instance of Microsoft.EntityFrameworkCore.DbSet<TEntity> 
        foreach (string item in order)
        {
            string orderPart = item;
            orderPart = Regex.Replace(orderPart, @"\s+", " ");
            string[] orderArry = orderPart.Split(' ');
            string orderField = orderArry[0];
            if (orderArry.Length == 2)
            {
                isAsc = orderArry[1].ToUpper() == "ASC";
            }
            var parameter = Expression.Parameter(typeof(TEntity), "t");
            var property = typeof(TEntity).GetProperty(orderField);
            if (property != null)
            {
                var propertyAccess = Expression.MakeMemberAccess(parameter, property);
                var orderByExp = Expression.Lambda(propertyAccess, parameter);
                resultExp = Expression.Call(typeof(Queryable), isAsc ? "OrderBy" : "OrderByDescending", new Type[] { typeof(TEntity), property.PropertyType }, tempData.Expression, Expression.Quote(orderByExp));
            }
        }
        if (resultExp != null) tempData = tempData.Provider.CreateQuery<TEntity>(resultExp);
        pagination.records = tempData.Count();
        var list = await tempData.Skip<TEntity>(pagination.rows * (pagination.page - 1)).Take<TEntity>(pagination.rows).ToListAsync();
        return list;
}

and what strange is the code works well in just ordersorting or in just pagination;

but in both conditions(pagination&sorting) , the Second pagedata always went wrong(first pagedata always right);

page1:

page2: