How to add data annotations to partial class?

Question

I have an auto generated class with a property on it. I want to add some data annotations to that property in another partial class of the same type. How would I do that?<

Answer 1

Looks like I figured out a different way similar to the link above using MetadataTypeAttribute:

namespace MyApp.BusinessObjects
{
    [MetadataTypeAttribute(typeof(SomeClass.Metadata))]{
    public partial class SomeClass
    {
        internal sealed class Metadata
        {
            private Metadata()
            {
            }

            [Required]
            public string Name{ get; set; }
        }
    }
}