Question

我有2个班级：

[Table(Name = "_Reference2")]
public class Customer
{
    [Column(Name = "_IDRRef")]
    public Binary CustomerRef { get; set; }
    [Column(Name = "_Description")]
    public string Name { get; set; }
}

[Table(Name = "_AccumReg2210")]
public class Payment
{
    [Column(Name="_Period")]
    public DateTime Period { get; set; }
    [Column(Name = "_Fld2211RRef")]
    public Binary Customer { get; set; }
    [Column(Name = "_Fld5051RRef")]
    public decimal Sum { get; set; }
}

有没有机会在1节课中合并这些课程？通常，我需要将 JOIN （ON Customer.CustomerRef = Payment.Customer）的查询写入此类。最好是实现连接到两个表的复杂类。

Answer 1

var results = from c in Customers
              from p in Payments
              where p.Customer == c.CustomerRef
              select new ComplexObject() {
                 Name = c.Name,
                 ...
              };

Answer 2

如果您不想使用Linq显式连接两个表，您可以在数据库中创建一个View并使用它生成一个模型（使用LinqToSQL或实体框架）？

Answer 3

我不确定这是否适用于您所需的解决方案，但您是否考虑过一个简单的CustomerPaymentViewModel类？

public class CustomerPaymentViewModel
{
    public Customer { get; set; }
    public Payment { get; set; }
}

使用LINQ在1个类中组合2个表

3 个答案: