如何在 ASP.NET api 中获取所有模型验证错误

如何解决如何在 ASP.NET api 中获取所有模型验证错误

我的模型如下所示：

public class Meeting : IValidatableObject
{
    public string Id { get; set; }
    [required]
    public string Start_time { get; set; }
    [required]
    public string End_time { get; set; }
    [required]
    public DateTime Date { get; set; }
    [required]
    [Url]
    public string Url { get; set; }
    [required]
    [RegularExpression(@"^[(a-zA-Z)' '(a-zA-Z)]*$",ErrorMessage = "Characters are not allowed.")]
    public string Owner { get; set; }
    [required]
    [RegularExpression(@"^[(a-zA-Z)' '(a-zA-Z)]*$",ErrorMessage = "Characters are not allowed.")]
    public string Participant { get; set; }

    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
    {
        List<ValidationResult> results = new List<ValidationResult>();
        DateTime dt,dt1;
        if(DateTime.TryParse(Start_time,out dt) == false)
        {
            results.Add(new ValidationResult("Start time wrong",new[] { "Start time" }));
        }
        if (DateTime.TryParse(End_time,out dt1) == false)
        {
            results.Add(new ValidationResult("End time wrong",new[] { "End time" }));
        }
        if (string.Compare(Start_time,End_time) == 1)
        {
            results.Add(new ValidationResult("Time Conflict",new[] { "Time" }));
        }
        return results;
    }
}

而且我不知道如何从模型本身和 IEnumerable<ValidationResult> Validate 方法中获取 JSON 中的所有错误

我的 POST 方法有这个实现：

    [HttpPost]
    public IActionResult Create([FromBody] Meeting meet)
    {
        if (ModelState.IsValid)
        {
            Guid obj = Guid.NewGuid();
            meet.Id = obj.ToString();
            _dataAccessprovider.AddMeetingRecord(meet);
            return Ok("Meeting was successfully added");
        }
        return BadRequest(ModelState);
    }

我尝试使用 IEnumerable allErrors = ModelState.Values.SelectMany(v => v.Errors);并在 BadRequest 中返回 allErrors 但它不起作用