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Is there any way to add custom attributes to properties in EF generated code? The only thing I can see as a plausible solution would be to come up with a custom T4 template. However, because of the nature of the attribute it would be impossible to determine the correct attribute parameter per EF property.
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AttributeUsage has a named parameter, AllowMultiple , with which you can make a custom attribute single-use or multiuse. In the following code example, a multiuse attribute is created. In the following code example, multiple attributes of the same type are applied to a class. [Author("P.
A custom attribute is a property that you can define to describe assets. Custom attributes extend the meaning of an asset beyond what you can define with the standard attributes. You can create a custom attribute and assign to it a value that is an integer, a range of integers, or a string.
You can do this by specifying a metadata type that mirrors the properties and is used simply for attribution.
[MetadataType(typeof(Dinner_Validation))] public partial class Dinner {} public class Dinner_Validation { [Required] public string Title { get; set; } } Steve Smith blogs about it here.
Unfortunately the above approach is brittle to refactoring. Another option is to use the new POCO entities. These avoid compile-time code generation altogether as far as I can tell. I haven't used them yet so can't comment on any pitfalls or tradeoffs.
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