/// <summary>
/// Validates the specified properties.
/// </summary>
/// <param name="propertyNames">The property names.</param>
public void Validate(params string[] propertyNames)
{
var a = ValidationResults.Select(e => e.PropertyName).Distinct();
if (Validator == null)
{
ValidationResults = ValidationResults.Except(propertyNames).ToList();
}
else
{
var validationSelector = propertyNames.Any()
? ValidatorOptions.ValidatorSelectors.MemberNameValidatorSelectorFactory(propertyNames)
: ValidatorOptions.ValidatorSelectors.DefaultValidatorSelectorFactory();
var validationContext = new ValidationContext(this, new PropertyChain(), validationSelector);
var results = Validator.Validate(validationContext).Errors;
if (propertyNames.Length == 0)
{
ValidationResults = results;
}
else
{
ValidationResults = ValidationResults.Except(propertyNames).Concat(results).ToList();
}
}
OnPropertyChanged(nameof(ValidationResults));
var b = ValidationResults.Select(e => e.PropertyName).Distinct();
foreach (var propertyName in a.Concat(b).Distinct())
{
OnErrorsChanged(propertyName);
}
}