Validate DateTime with FluentValidator

Question

This is my ViewModel class:

public class CreatePersonModel
{
    public string Name { get; set; }
    public DateTime DateBirth { get; set;          


        

Answer 1

Have a look at the Fluent Validation documentation on GitHub:

https://github.com/JeremySkinner/FluentValidation/wiki

Try adding a RegEx Validator to ensure that the user's input (a string) can be parsed as a date correctly, prior to applying the Less Than Validator.

EDIT

Having run few test cases and looked at the source code for Fluent Validator I concede that the above approach won't work.

The standard error you get is added during the Model Binding phase, which happens before the fluent validation framework can access and check the model.

I assumed that the framework's authors had been clever and were injecting their validation code into the model binding phase. Looks like they aren't.

So the short answer is what you want to do does not appear to be possible.