我正在使用 LLBLGen Pro、MVC 3 和 VB.NET。我正在尝试返回 Iqueryable 的对象,但出现以下异常
无法投射类型为“SD.LLBLGen.Pro.LinqSupportClasses.LLBLGenProQuery 1[Mail.DAL.EntityClasses.TblCostCentreEntity]' to type 'System.Linq.IQueryable
1[Mail.Model.CostCentre]”的对象。
我不确定 LLBLGenProQuery 和 IQueryable 之间有什么区别?如何使用 LLBLGenPro 返回 IQueryable 对象?我的代码如下:
Public Function GetAllCostCentres() As IQueryable(Of Model.CostCentre) Implements ICostCentreRepository.GetAllCostCentres
Mapper.CreateMap(Of TblCostCentreEntity, CostCentre)()
Dim metaData As New LinqMetaData
Dim q = From p In metaData.TblCostCentre _
Select Mapper.Map(Of IQueryable(Of CostCentre), TblCostCentreEntity)(p)
'Dim t As IQueryable(Of CostCentre) = Mapper.Map(Of CostCentre)(q)
'Select New CostCentre With {.Active = p.Active, .CostCentre = p.CostCentre, .CreatedBy = p.CreatedBy, .DateCreated = p.DateCreated, .DateLastModified = p.DateLastModified, .ModifiedBy = p.ModifiedBy, .CostCentreID = p.CostCentreId}
Return q
End Function