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我正在制作我的MVC应用程序。我创建了一个视图,用户从下拉列表中选择数据。的看法是这样的:MVC自动验证
@Scripts.Render("~/bundles/jquery")
@Scripts.Render("~/bundles/bootstrap")
@using ClassDeclarationsThsesis.Classes
@using Microsoft.Ajax.Utilities
@model ClassDeclarationsThsesis.Models.ClassesViewModel
@{ ViewBag.Title = "Classes";
}
<h2>Classes</h2>
@foreach (var user in Model.users)
{
if (user.email.Replace(" ", String.Empty) == HttpContext.Current.User.Identity.Name)
{
if (user.user_type.Replace(" ", String.Empty) == 3.ToString() || user.user_type.Replace(" ", String.Empty) == 2.ToString())
{
using (Html.BeginForm("Classes", "Account", FormMethod.Post, new { @class = "form-horizontal", role = "form" }))
{
@Html.AntiForgeryToken()
<h4>Generate summary views</h4>
<hr />
@Html.ValidationSummary("", new { @class = "text-danger" })
<div class="form-group">
@{
List<SelectListItem> listItems1 = new List<SelectListItem>();
}
@foreach (var subject in Model.subject)
{
listItems1.Add(new SelectListItem
{
Text = subject.name,
Value = subject.name,
});
}
@Html.LabelFor(m => m.subject_name, new { @class = "col-md-2 control-label" })
<div class="col-md-10">
@Html.DropDownListFor(m => m.subject_name, listItems1, new { @class = "form-control" })
</div>
</div>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" class="btn btn-default" value="Submit" />
</div>
</div>
}
}
if (user.user_type.Replace(" ", String.Empty) == 1.ToString())
{
<p>You do not have enough permissions to enter this page. Contact the administrator.</p>
}
}
}
控制器是:
public ActionResult Classes()
{
ClassDeclarationsDBEntities1 entities = new ClassDeclarationsDBEntities1();
var model = new ClassesViewModel();
model.subject = entities.Subjects.ToList();
model.users = entities.Users.ToList();
if (ModelState.IsValid)
{
return RedirectToAction("ClassesPickGroup", "Account", new { subject_name=model.subject_name});
}
return View(model);
}
和模型:
public class ClassesViewModel
{
public List<Subject> subject { set; get; }
public List<User> users { get; set; }
[Required]
[Display(Name = "Subject")]
public string subject_name { get; set; }
}
但由于视图只包含一个下拉列表,它始终是有效的并立即重定向到不同的视图。如何让应用程序在下拉列表中等待用户选择,然后提交答案?
的问题,您有一个下拉选择一种形式。直到用户单击提交后才会提交表单,然后执行该操作。 “让应用程序等待用户选择”没有意义。你有触发器来自动提交表单吗? – Jasen
@贾森没有这样的触发器。问题在于视图甚至没有显示出来,并且直接返回到ClassesPickGroup视图,如同声明中所述。 –
@MaciejMiśkiewicz查看答案并进行测试,等待您的反馈 –