I understand that IValidatableObject is used to validate an object in a way that lets one compare properties against each other. I'd still like to have attributes to validate individual properties,...

I am developing a website built on EntityFrameworkCore and targeting ASP.NET Core 2.1. I want to specify an error message for an enum field in my model like so: [Required(ErrorMessage = "Select an...

I tried to implement IValidatableObject on my Razor Page model in ASPNET Core 2. I was surprised that the Validate method was not invoked. Moving all [BindableProperty]s to a new type implementing ...

I have implemented IValidatableObject several times and have never found out what the purpose of parsing ValidationContext to the Validate method is - my typical IValidatableObject implementation l...

I have a test class with a couple tests that check to see if the entity IsValid. I moved to using IValidatableObject from having my own custom validation but I'm stuck with the correct validation t...

I've a ViewModel which has some DataAnnotations validations and then for more complex validations implements IValidatableObject and uses Validate method. The behavior I was expecting was this one:...

Currently my business objects implement IDataErrorInfo. Since I intend to use these libraries in ASP.NET MVC 3, I figure I should implement IValidatableObject as well or maybe instead of. Does WP...