c# - llbl gen group by with conditional sum 无法绑定错误

Question

我正在使用带有 llblgen 的 linq 查询，它给了我一个错误，任何人都可以帮我解决这个问题。这是我的查询

var reuslt = from cc in _metadata.TableName
                                     where cc.StdId == 125
                                     group cc by new { cc.Column1, cc.Column2 } into gr
                                     select new
                                     {
                                         Col1 = gr.Key.Column1,
                                         Col2 = gr.Key.Column2,
                                         IncomeType1 = gr.Sum(x => x.TypeId == 1 ? x.MonthlyIncome : 0),
                                         IncomeType2 = gr.Sum(x => x.TypeId == 2 ? x.MonthlyIncome : 0)
                                     };

当我执行错误时，此查询中发生的result.ToList() 错误：

The multi-part identifier "LPLA_3.TypeId" could not be bound.
The multi-part identifier "LPLA_3.MonthlyIncome" could not be bound.

这是数据

Id       stdId            column1      column2            TypeId      MonthlyIncome
1         125               1234          12                1                 4
2         125               1235          12                2                 4

预期输出应该是

StdId   column1  column2  TypeId1  TypeId2     IncomeType1       IncomeType2 
125      1234      12        1       2             4                4

请帮我