Question

我正在使用asp.net核心实体框架。我正在使用linq来组合三个表，User，Products和User_Had_Products。我的查询似乎工作正常。我遇到的问题是打印出我的查询结果。我可以打印出整个对象，但不能使用点符号打印出各个字段。例如，对象的输出是

{ name = user, product = desk, quantity = 1, date = 1/13/17 3:30:32 PM }
{ name = user, product = desk, quantity = 1, date = 1/13/17 3:52:40 PM }
{ name = user, product = desk, quantity = 1, date = 1/13/17 3:52:40 PM }
{ name = user, product = desk, quantity = 1, date = 1/14/17 9:14:22 AM }
{ name = user, product = desk, quantity = 1, date = 1/14/17 9:14:27 AM }

我想要输出

user  desk 1 1/13/17 3:30:32 PM 
user  desk 1 1/13/17 3:30:32 PM 
user  desk 1 1/13/17 3:30:32 PM 
user  desk 1 1/13/17 3:30:32 PM 
user  desk 1 1/13/17 3:30:32 PM

这是我的代码

 ViewBag.User_Has_Products = from user_products in _context.Users_Has_Products
                    join user in _context.Users on user_products.users_id equals user.id 
                    join product in _context.Products on user_products.products_id equals product.id 
                    select new{name =  user.name, product = product.name, 
                    quantity = user_products.quanitity, date = user_products.created_at};

            foreach(var item in ViewBag.User_Has_Products)
            {
                System.Console.WriteLine(item);
            }

Answer 1

您必须格式化输出：

WriteLine($"{item.name} {item.product} {item.quantity} {item.date}");

打印出我的linq查询结果

1 个答案: