validationattribute Archives

How can I cleanly share a Custom Validator (ValidationAttribute) for a data model, a ViewModel, and a DTO in ASP.NET

September 5, 2022 by Magenaut

I’m doing a ASP.NET MVC course. I’m building a REST Web API using ASP.NET WebAPI 2. The application also contains standard MVC 5 views. I’m using DTOs (Data Transfer Objects) to decouple the API from the data model. I’ve made a custom ValidationAttribute that I have applied to a property in my data model, and I’d like to use the same Validation attribute for a property on my DTO as well as a property ViewModel used in an MVC view.

I need to return customized validation result (response) in validation attributes in ASP.Net core Web API

September 4, 2022 by Magenaut

I need to return customized validation result (response) invalidation attributes in ASP.Net core Web API
This is the ValidationAttribute I have created.

Get Data Annotations attributes from model

August 28, 2022 by Magenaut

I want to create custom client-side validator, but I want define validation rules via Data Annotations attributes at business logic layer. How can I access model validation attributes in runtime?

How to call ValidationAttributes manually? (DataAnnotations and ModelState)

August 25, 2022 by Magenaut

We have a need within some of our logic to iterate through the properties of a model to auto-bind properties and want to extend the functionality to include the new dataannotations in C# 4.0.