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我有这个看起来不错的 linq 查询，尚未测试。但我想知道为什么我不能将 And 语句放在单独的行上。如果我尝试我得到和意外的令牌错误，并且由于保护级别工作查询而 c 和 b 变得无法访问

Dim result =
                From b In context.H_Beneficiary
                         Join e In context.Employees
                         On b.EmployeeId Equals (e.EmployeeId)
                         Join c In context.Companies
                         On e.AncillaryId Equals (c.CompanyId)
                         Where e.AncillaryId.Equals(iPerId) And c.AncillaryId.Equals(iCompanyId) And ((b.EndDate Is Nothing) Or (b.EndDate.Equals(DateTime.Today)))
                         Select b.EnterTime


            Return CDate(result)


        Return CDate(result)

所需查询

 Dim result =
                From b In context.H_Beneficiary
                         Join e In context.Employees
                         On b.EmployeeId Equals (e.EmployeeId)
                         Join c In context.Companies
                         On e.AncillaryId Equals (c.CompanyId)
                         Where e.AncillaryId.Equals(iPerId)
                         And c.AncillaryId.Equals(iCompanyId)
                         And ((b.EndDate Is Nothing) Or (b.EndDate.Equals(DateTime.Today)))
                         Select b.EnterTime
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1 回答 1

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似乎隐式续行不考虑“和”。只需在上一行上使用显式续行：

     From b In context.H_Beneficiary 
                 Join e In context.Employees 
                 On b.EmployeeId Equals (e.EmployeeId) 
                 Join c In context.Companies 
                 On e.AncillaryId Equals (c.CompanyId) 
                 Where e.AncillaryId.Equals(iPerId) _
                 And c.AncillaryId.Equals(iCompanyId) _
                 And ((b.EndDate Is Nothing) Or (b.EndDate.Equals(DateTime.Today))) 
                 Select b.EnterTime
于 2012-09-13T17:06:59.440 回答