C# Entity Framework 6 Code First：如何为存储在 DB 中的属性定义特定的 setter

Question

I'm using Entity Framework 6 Code First and would to update a value before saved in it DB. I have a model with properties mapped to db table fields and for one of them, MyBackField , I want to trim his value before saving the entity in db via SaveChanges(). I tried to use backing fields like that:

private string MyBackField;
public string MyFrontField{ get => MyBackField; set => MyBackField = value?.Trim(); }

The thing is: field MyBackField exists already in db, when I change it from public to private property, the Update-Database command generates a migration file to drop it from db.

How can I do this?

Answer 1

Finally I switched the member and the property and it worked perfectly.

Thks @GertArnold