.Net Entity Framework - 带有条件的关键字

Question

我需要在查询中创建一个 if-else 语句，这意味着如果 type = Cash，我只想将 OpenAmount 添加到 ExpectedAmount，问题是它只给我现金行而不是其他行。

 Dim TenderList = (From t In EnData.BatchRecs 
                   Join b In EnData.RegShifts 
                   On t.BatchID Equals b.RegShiftID 
                   Where t.BatchID = ID 
                   Let ExpectedAmount = (t.ExpectedAmount + b.OpeningAmount) 
                   Where t.TenderName = "CASH"
                   Select t.BatchRecID, ExpectedAmount, t.ExpectedCount, 
                      t.PickUpAmount, t.TenderName, OverShort, 
                      t.PickUpCount, t.TenderID)

这个可以吗？

Answer 1

您应该能够使用条件语句。

Let ExpectedAmount = If(t.TenderName = "CASH",
                        t.ExpectedAmount + b.OpeningAmount,
                        t.ExpectedAmount) 

如果你这样做，你也不需要Where t.TenderName = "CASH"。