Question

What is the best way to find which property has a KeyAttribute in provided Model (class)?

I tried with DataAnnotationsModelMetadataProvider; but ModelMetadata does not contain information about KeyAttribute.

Answer 1

For a model class named MyModel, you can find the properties with key attributes as follows.

var keyAttributedProps = typeof(MyModel).GetProperties()
   .Where(p => p.GetCustomAttributes(typeof(KeyAttribute), true).Length == 1);