Group validation messages for multiple properties together into one message asp.net mvc

Question

I have a view model that has year/month/day properties for someone\'s date of birth. All of these fields are required. Right now, if someone doesn\'t enter anything for the

Answer 1

You could do that simply using CustomAttribute.

Just put this attribute on your model

[CustomValidation(typeof(MyModel), "ValidateRelatedObject")]

and then simply define the rules to validate the values in the following method:

public static ValidationResult ValidateRelatedObject(object value, ValidationContext context)
{
    var context = new ValidationContext(value, validationContext.ServiceContainer, validationContext.Items);
    var results = new List();
    Validator.TryValidateObject(value, context, results);

    // TODO: Wrap or parse multiple ValidationResult's into one ValidationResult

    return result; 
}

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