Per-property opt out of implicit required validation.

Is there an existing issue for this?

• I have searched the existing issues

Is your feature request related to a problem? Please describe the problem.

There are cases where the model correctness is a non-null property but the model itself can provide a valid default and therefore is NOT required to be submitted.

My primary case is

public class VMExample
{
    // An empty collection is _fine_ here
    public List<Guid> Selections { get; set; } = [];
}

When I bind this to something like a Telerik Kendo multi-select it winds up with the unobtrusive required validation which prevents the form from being submitted with 0 entries.

However, I do not want to disable the implicit required validation everywhere.

The current thing that we have to do is

public class VMExample
{
    public List<Guid>? Selections { get; set; } = [];
}

But this basically means that uses of vm.Selections result in nullable warnings because initialization is not considered.

Describe the solution you'd like

I would be happy with any of

• [NotRequired]
• [Required(AllowEmptyCollection=true)]
• [SuppressImplicitRequired]
• A range or min length validation of 0 overriding (excluding/removing) the required attribute
• Automatic bypass of the implicit required attribute for cases where the model has an initialized default value

Additional context

No response