实体框架多个属性的默认值

Question

Is it possible to default mutiple value by only one related attribute? I find setting it row by row is a bit boilerish.

public class FooBarCounter{
        [Key]
        public int id{ get; set; }
        [DefaultValue(0)]
        public int FooCounter1 { get; private set; }
        [DefaultValue(0)]
        public int FooCounter2 { get; private set; }

        [DefaultValue(5)]
        public int BarCounter1 { get; private set; }
        [DefaultValue(5)]
        public int BarCounter2 { get; private set; }        
    }

Edit:

So the [Attrib] is in every second row, i would rather like something like this:

[Authorize]
public class MyFullyAuthorizedClass : Controller {
   //props, methoods etcetc
}

Here the [Authorize] affects the entire class, like if i would put it before every methood, now thats not the best either, since i have multiple defaults, but it's only 1 line, not a boiler in every secont line. Hope i'm clearer now.

Any ideas?

Answer 1

The DefaultValue attribute is valid on all targets - so you can set it at the class level if you like, and write code that looks for it and reacts to it.

It's unlikely however that any Entity Framework implementations look for it and apply it - it's not part of the EF spec .

Answer 2

public class FooBarCounter{
    private const int DEFAULTVALUE = 0;

    [DefaultValue(DEFAULTVALUE)]
    public int FooCounter1 { get; private set; }
    [DefaultValue(DEFAULTVALUE)]
    public int FooCounter2 { get; private set; }
    // and so on ...

}