CODEWITHSUNDEEP
razorasp.net-coreunobtrusive-validation
Fraze
Fraze

Reputation: 948

Custom Error Message while implementing IValidatableObject

I have implemented IValidatableObject with no issues:

 public class DisclaimerCBs : IValidatableObject
 {
        public bool cb1 { get; set; } = false;
        public bool cb2 { get; set; } = false;
        public bool cb3 { get; set; } = false;

        public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
        {
            Type type = validationContext.ObjectInstance.GetType();
            IEnumerable<PropertyInfo> checkBoxeProperties = type.GetProperties(BindingFlags.Instance | BindingFlags.Public).Where(p => p.PropertyType == typeof(bool));

            bool allIsChecked = true;
            foreach (PropertyInfo checkBoxProperty in checkBoxeProperties)
            {
                var isChecked = (bool)checkBoxProperty.GetValue(validationContext.ObjectInstance);
                if (!isChecked)
                {
                    allIsChecked = false;
                    break;
                }
            }

            if(!allIsChecked)
                yield return new ValidationResult("Please agree to all Disclaimers. ");

            //TRUE IF THIS FAR
            yield return ValidationResult.Success;
        }
}

However, this only presents the error message in the Validation Summary. I would like to also have this error bring focus to a specified <div> element AND reiterate the error in a label much like property validators do using <span asp-validation-for="Model.Property"></span> . How could I accomplish this?

Upvotes: 0

Views: 815

Answers (1)

TanvirArjel
TanvirArjel

Reputation: 32069

Replace your Validate method with the following:

public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
{
     Type type = validationContext.ObjectInstance.GetType();
     IEnumerable<PropertyInfo> checkBoxeProperties = type.GetProperties(BindingFlags.Instance | BindingFlags.Public).Where(p => p.PropertyType == typeof(bool));

     List<ValidationResult> validationResult = new List<ValidationResult>();

     foreach (PropertyInfo checkBoxProperty in checkBoxeProperties)
     {
         var isChecked = (bool)checkBoxProperty.GetValue(validationContext.ObjectInstance);
         if (!isChecked)
         {
             validationResult.Add(new ValidationResult("Please agree to this Disclaimer.", new[] { checkBoxProperty.Name }));
         }
     }

     return validationResult;
}

Upvotes: 1

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