C#•2y ago

.NET 6 ASP.NET API [Answered]

Hello, I am programming a .NET and currently I am using

using System.ComponentModel.DataAnnotations;

using System.ComponentModel.DataAnnotations;

[Required], [MaxLength], [MinLength] to validate data transfer objects sent by users in json. I am wondering is there a better way to validate my DTOs, a week ago someone suggested to use FluentAPI, can someone give me advice?

7 Replies

Cisien•2y ago

I've heard good things about FluentValidator. nothing wrong with data annotations either, if they suit your needs.

barcode•2y ago

Thank you, the main issue I'm having with data annotations is being forced to Errors.ParamName format, I wrote express before I wrote C# and I had more control of the messages it would return, with data annotations I feel like I'm forced to a standard that is annoying to handle in the frontend Is there a way to change that in the annotations? I found some articles on creating custom problem details factories but I'm not sure is it worth the hassle

Cisien•2y ago

you can disable it and trigger your own model validation

barcode•2y ago

wdym?

Cisien•2y ago

something like this:

builder.Services.Configure<ApiBehaviorOptions>(options =>
    {
        options.SuppressModelStateInvalidFilter = true;
    });

builder.Services.Configure<ApiBehaviorOptions>(options =>
    {
        options.SuppressModelStateInvalidFilter = true;
    });

then in your controller, you can call ModelState.IsValid and return your own version of the model state errors

barcode•2y ago

Oh I didn't know that Thank you I will try it out

Accord•2y ago

✅ This post has been marked as answered!

Gaming

Programming

.NET 6 ASP.NET API [Answered]