使用对象属性Vb.Net的Linq顺序

Question

我在地图中有一个pointhape对象的数据表，我想通过Object.baseshape.label.y订购这个列表，这是一个double值。我怎么能用Linq做到这一点？ 到目前为止我已实现此代码

Dim query As IEnumerable(Of DataRow) = From result In dataArray.AsEnumerable() Order By result.Field(Of Object)("MapShapes") Descending

但我想要这样的东西

Dim query As IEnumerable(Of DataRow) = From result In dataArray.AsEnumerable() Order By result.Field(Of Object)("MapShapes")..baseshape.label.y Descending 

Answer 1

你可以在Field（Of ...）中使用特定的对象类型，就像这样......

Dim query = From result In dataArray.AsEnumerable() Order By result.Field(Of MapSuite.BaseMapShape)("MapShapes").label.y Descending