如何解决此错误？ （LINQ到XML）

Question

In my project I'm using Entity Framework, I've got a problem in ExamProduced entity, to be especific in Quantify property.

In my database Quantify property is tinyint datatype, and when VS imported it, it became in byte. VS is notifying me an error that it's unknown for me.

Here are the images.

Answer 1

Yes, there's no explicit conversion from XAttribute to byte . You'd probably be okay with:

Quantify = (byte) (int) objective.Attribute("Quantify")

The (int) part will apply the explicit XAttribute to int conversion ; the (byte) part will perform a narrowing int to byte conversion. You may want to make this checked so that you'll get an exception if the attribute is "500" for example.