You can use a second partial class that is created by you which includes the data annotations you like.
Look here for an answer covering this issue.
문제
I am using entity framework db first. how do I add data annotations to the model without putting it into the auto generated model?
I want to avoid losing the work I have done, in case I need to add a new column to the table.
Any small explanation or link would be helpful for me to understand.
thanks,
Andy
해결책
You can use a second partial class that is created by you which includes the data annotations you like.
Look here for an answer covering this issue.
다른 팁
I think Code first migrations is what you are looking for.