validationattribute - w3toppers.com

Custom validation attribute that compares the value of my property with another property’s value in my model class

Here’s how you could obtain the other property value: public class CustomAttribute : ValidationAttribute { private readonly string _other; public CustomAttribute(string other) { _other = other; } protected override ValidationResult IsValid(object value, ValidationContext validationContext) { var property = validationContext.ObjectType.GetProperty(_other); if (property == null) { return new ValidationResult( string.Format(“Unknown property: {0}”, _other) ); } var otherValue … Read more

RequiredIf Conditional Validation Attribute

I had the same problem yesterday, but I did it in a very clean way which works for both client side and server side validation. Condition: Based on the value of other property in the model, you want to make another property required. Here is the code: public class RequiredIfAttribute : RequiredAttribute { private String … Read more