我正在尝试处理我目前正在开发的申请表的其中一个部分的错误，以解释我的问题，下面的屏幕截图显示了此部分的工作流程：
当您第一次导航到显示此屏幕的部分时，您然后从下拉列表中选择一个选项并单击下一步。
当您单击下一步时，将生成所选选项的表单值，如下所示：
当您更改选项时出现问题，当生成新的选项表单值时，正在生成前一个选项的错误，如下所示：
为了解释单击下一个或更改按钮时的一些逻辑，它会在actionresult中的相应applycontroller中回发一个actionresult，它将选项值发布到一个将数据保存到数据库的web api下面的代码正在执行这个任务：
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<ActionResult> AdmissionsTest(AdmissionsTestViewModel model, ApplyService service, string programmeDesc, int? programmeId, FormCollection formCollection)
{
Guid applicationId = (Guid)TempData["ApplicationId"];
TempData["ApplicationId"] = applicationId;
model.ApplicationValidations = (ICollection<ApplicationValidation>)TempData["ApplicationValidations"];
TempData["ApplicationValidations"] = model.ApplicationValidations;
model.ApplicationProgrammeDetails = DependencyResolver.Current.GetService<ApplicationProgrammeDetailsViewModel>();
if (programmeId != null)
{
Programme programme = service.GetProgramme(model.ProgrammeId);
model.ApplicationProgrammeDetails.ProgrammeDesc = programme.ProgrammeDesc;
}
else
{
model.ApplicationProgrammeDetails.ProgrammeDesc = programmeDesc;
}
foreach (var item in formCollection.AllKeys)
{
if ((model.AdmissionsTestOptionId == null) && (item.ToLowerInvariant().StartsWith("submitbuttonnext") || (item.ToLowerInvariant().StartsWith("submitbuttonchange"))))
{
model.ApplicationId = applicationId;
model.NavButton = "10";
await _client.PostAsJsonAsync("api/ApplicationAdmissionsTestDetail/UpdateApplicationAdmissionsTestDetail", model)
.ContinueWith((postTask) => postTask.Result.EnsureSuccessStatusCode());
return View("AdmissionsTest", model);
}
if ((model.AdmissionsTestOptionId == 1) && (item.ToLowerInvariant().StartsWith("submitbuttonnext") || (item.ToLowerInvariant().StartsWith("submitbuttonchange"))))
{
model.ApplicationId = applicationId;
model.NavButton = "10";
await _client.PostAsJsonAsync("api/ApplicationAdmissionsTestDetail/UpdateApplicationAdmissionsTestDetail", model)
.ContinueWith((postTask) => postTask.Result.EnsureSuccessStatusCode());
return View("AdmissionsTest", model);
}
if ((model.AdmissionsTestOptionId == 2) && (item.ToLowerInvariant().StartsWith("submitbuttonnext") || (item.ToLowerInvariant().StartsWith("submitbuttonchange"))))
{
model.ApplicationId = applicationId;
model.NavButton = "10";
await _client.PostAsJsonAsync("api/ApplicationAdmissionsTestDetail/UpdateApplicationAdmissionsTestDetail", model)
.ContinueWith((postTask) => postTask.Result.EnsureSuccessStatusCode());
return View("AdmissionsTest", model);
}
if ((model.AdmissionsTestOptionId == 3) && (item.ToLowerInvariant().StartsWith("submitbuttonnext")))
{
model.ApplicationId = applicationId;
await _client.PostAsJsonAsync("api/ApplicationAdmissionsTestDetail/UpdateApplicationAdmissionsTestDetail", model)
.ContinueWith((postTask) => postTask.Result.EnsureSuccessStatusCode());
if (model.NavButton == null) { model.NavButton = "11"; }
return NavigateToStage(model.NavButton);
}
if ((model.AdmissionsTestOptionId == 3) && (item.ToLowerInvariant().StartsWith("submitbuttonchange")))
{
model.ApplicationId = applicationId;
model.NavButton = "10";
await _client.PostAsJsonAsync("api/ApplicationAdmissionsTestDetail/UpdateApplicationAdmissionsTestDetail", model)
.ContinueWith((postTask) => postTask.Result.EnsureSuccessStatusCode());
return View("AdmissionsTest", model);
}
}
//save
string dateGMATTaken = model.DateGMATTakenDay + "/" + model.DateGMATTakenMonth + "/" + model.DateGMATTakenYear;
string dateGRETaken = model.DateGRETakenDay + "/" + model.DateGRETakenMonth + "/" + model.DateGRETakenYear;
DateTime dateOfGMATTestTaken;
DateTime dateOfGRETestTaken;
if (DateTime.TryParse(dateGMATTaken, out dateOfGMATTestTaken))
{
model.GMATDateTaken = dateOfGMATTestTaken;
}
else
{
model.GMATDateTaken = null;
}
if (DateTime.TryParse(dateGRETaken, out dateOfGRETestTaken))
{
model.GREDateTaken = dateOfGRETestTaken;
}
else
{
model.GREDateTaken = null;
}
model.ApplicationId = applicationId;
await _client.PostAsJsonAsync("api/ApplicationAdmissionsTestDetail/UpdateApplicationAdmissionsTestDetail", model)
.ContinueWith((postTask) => postTask.Result.EnsureSuccessStatusCode());
//redirect based on submit
if (model.NavButton == null) { model.NavButton = "11"; }
return NavigateToStage(model.NavButton);
}
我已经使用断点测试了 actionresult 以查看它是否可能会进入最终提交操作，但到目前为止它似乎停留在 actionresult 内我还使用 fiddler 来查看 web api 上的提交方法是否被调用也返回空白。
有没有人知道为什么会发生这种情况？
提前感谢您的建议。