获取StatusCode of NegotiatedContentResult

Question

如何检查来自此NegotiatedContentResult的IHttpActionResult是否有Ok StatusCode。

例如。if (ValidateRegistrationStep3(accountModel) == Ok()) { code to run }

var result = ValidateRegistrationStep3(accountModel);

如果您检查result in Locals，它有一个Value of System.Web.Http.Results.NegotiatedContentResult<string> of Type System.Web.Http.IHttpActionResult {System.Web.Http.Results.NegotiatedContentResult<string>}和一个StatusCode of OK。如何检查StatusCode

[HttpPost]
[Route("register/validate3")]
public IHttpActionResult ValidateRegistrationStep3(
            [FromBody]AccountRegisterModel accountModel) {
    List<string> errors = new List<string>();

    if (!IsDigits(accountModel.CreditCard, 16)) errors.Add("CreditCard needs to be 16 digits.");

    var regExp = @"^(0[1-9]|1[0-2])\/[0-9]{2}$";
    if (!Regex.IsMatch(accountModel.ExpDate, regExp, RegexOptions.IgnoreCase))
                    errors.Add("Expiration Date is not valid format (MM/YY)");

    if (errors.Count == 0) return Content(HttpStatusCode.OK, "Register Model-3 Valid");
    else return Content(HttpStatusCode.BadRequest, errors.ToArray()); }

解决方案：

将验证代码分解到助手方法，然后从IHttpActionResult中调用它。

[HttpPost]
[Route("register/validate3")]
public IHttpActionResult ValidateRegistrationStep3(
            [FromBody]AccountRegisterModel accountModel) {
    List<string> errors = ValidateRegistrationStep3Inner(accountModel);

    if (errors.Count == 0) return Content(HttpStatusCode.OK, "Register Model-3 Valid");
    else return Content(HttpStatusCode.BadRequest, errors.ToArray()); }

private List<string> ValidateRegistrationStep3Inner(AccountRegisterModel accountModel)
{
  List<string> errors = new List<string>();

  if (!IsDigits(accountModel.CreditCard, 16)) errors.Add("CreditCard needs to be 16 digits.");
  if (!string.IsNullOrWhiteSpace(accountModel.ExpDate)) {
    var regExp = @"^(0[1-9]|1[0-2])\/[0-9]{2}$";
    if (!Regex.IsMatch(accountModel.ExpDate, regExp, RegexOptions.IgnoreCase))
      errors.Add("Expiration Date is not valid format (MM/YY)");
  } else errors.Add("Expiration Date is required (MM/YY)");

  return errors; }

然后可以从Controller中调用helper方法，并检查它的返回。

if (ValidateRegistrationStep1Inner(accountModel).Count == 0 &&
            ValidateRegistrationStep2Inner(accountModel).Count == 0 &&
            ValidateRegistrationStep3Inner(accountModel).Count == 0)

Answer 1

回答你的问题--你需要执行结果。

public async Task<HttpStatusCode> GetResult()
{
    var response = ValidateRegistrationStep3(accountModel);
    var result = await response.ExecuteAsync(new CancellationToken());
    var statusCode = result.StatusCode;

    return statusCode;
}

但是你不应该自己直接给控制器打电话。相反，将验证代码移动到一个单独的类(或者添加一个不涉及IHttpActionResult的新方法)。

public class RegistrationValidation : IRegistrationValidation
{
    public List<string> Validate(AccountRegisterModel model)
    {
        List<string> errors = new List<string>();

        ...

        return errors;
    }
}

public class RegistrationController : ApiController
{
    private readonly IRegistrationValidation validator;

    // with a DI container
    public RegistrationController(IRegistrationValidation validator)
    {
        this.validator = validator;
    }

    // without a DI container
    public RegistrationController()
    {
        this.validator = new RegistrationValidation();
    }

    public IHttpActionResult ValidateRegistrationStep3(AccountRegisterModel accountModel)
    {
        var errors = validator.Validate(accountModel);

        if (error.Count() == 0)
            return Content(HttpStatusCode.OK, "Register Model-3 Valid");
        ...
    }

    public IHttpActionResult FinishRegistration(AccountRegisterModel accountModel)
    {
        var errors = validator.Validate(accountModel);
        if (errors.Count() == 0)
        {
            ...
        }
    }
}