Asp。NetcoreWebApi模型状态不工作-Asp.NetcoreWebApimodelstatenotworking

I have this webapi and trying to use the "modelstate.IsValid" function, but i have ran into some strange problem. I have the following method in my controller:

我有这个webapi并尝试使用“modelstate”。是有效的函数，但是我遇到了一些奇怪的问题。我的控制器有以下方法:

[HttpPut]
    [Route("{id}")]
    public async Task Put([FromBody]ItemUpdateModel model, [FromRoute]int id)
    {
        if (!ModelState.IsValid) //Here i have a breakpoint!
        {
            return BadRequest(new
            {
                code = 400,
                message = ModelState.Values.First().Errors.First().ErrorMessage
            });
        }
}

And here is the model, ItemUpdateModel

这是模型ItemUpdateModel

using System.ComponentModel.DataAnnotations;

namespace TestApi.Models
{
    public class ItemUpdateModel
    {
        [Required]
        [Display(Name = "title")]
        [MaxLength(40)]
        public string Title { get; set; }

        [Required]
        [Display(Name = "discount")]
        public double Discount { get; set; }

        [Required]
        [Display(Name = "priceupdate")]
        public bool PriceUpdate { get; set; }
    }
}

I use Postman to send this http-request in the body with verb PUT and format json:

我使用Postman将这个http请求以谓词PUT和格式json发送到主体:

{ "title": "Some test", "discount": 0, "priceupdate": false }

{"title": "Some test"， "discount": 0， "priceupdate": false}

This request should pass ok, but even if i try to leave out some properties the modelstate is always true. So when looking into the modelstate, this model aint binding at all to it. Only the [FromRoute]int id is bind, and the modelstate gets valid.

这个请求应该传递ok，但即使我尝试省略一些属性，modelstate始终为true。因此，当研究模型状态时，这个模型对它没有约束力。只有[FromRoute]int id被绑定，模型状态才有效。

The model is anyway getting filled with data and working except from the modelstate validation/binding.

无论如何，除了模型状态验证/绑定之外，模型都在填充数据并工作。

Also in the header im including: "application/json; charset=utf-8"

在标题中还包括:“应用/json;charset = utf - 8”

Anyone can help me with this, i have struggled a lot with this that seems like a really simple task :)

任何人都可以帮助我做这件事，我一直在努力做这件事，这似乎是一项非常简单的任务:

Thanks!

谢谢!

1 个解决方案