ASP.NET MVC: Custom Validation by DataAnnotation
You could write a custom validation attribute: public class CombinedMinLengthAttribute: ValidationAttribute { public CombinedMinLengthAttribute(int minLength, params string[] propertyNames) { this.PropertyNames = propertyNames; this.MinLength = minLength; } public string[] PropertyNames { get; private set; } public int MinLength { get; private set; } protected override ValidationResult IsValid(object value, ValidationContext validationContext) { var properties = this.PropertyNames.Select(validationContext.ObjectType.GetProperty); var … Read more