请帮我在视图中显示错误消息。我的代码如下 -
这是我的视图模型:
public class DepartmentViewModel
{
//public Department Department { get; set; }
public string DepartmentId { get; set; }
[Required]
public string DepartmentName { get; set; }
public string ManagerMemberId { get; set; }
public bool IsActive { get; set; }
public List<Member> Managers { get; set; }
}
这是控制器:
public class DepartmentController : Controller
{
//
// GET: /Department/
public ActionResult Index()
{
var adminUserId = (string)Session["UserId"];
var memberId = (string)Session["MemberId"];
List<Department> departments = null;
if (!string.IsNullOrEmpty(adminUserId))
{
departments = new DepartmentManager().GetDepartments(false);
}
else if (!string.IsNullOrEmpty(memberId))
{
var companyId = (int)Session["CompanyId"];
departments = new DepartmentManager().GetDepartments(false, companyId);
}
//var managers = new MemberManager().GetMembersOfManagerCategory(true, );
return View("DepartmentList", departments);
}
public ActionResult Delete(string departmentId)
{
try
{
new DepartmentManager().DeleteDepartment(departmentId);
}
catch (System.Exception exception)
{
ModelState.AddModelError("Error", "Unable to delete department. Try again, and if the problem persists see your system administrator.");
//return RedirectToAction("Index", "Department");
}
return RedirectToAction("Index", "Department");
}
}
这是视图:
@model IEnumerable<PDCA.Core.EntityClasses.Department>
@{
ViewBag.Title = "Department List";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<div class="container">
@using (Html.BeginForm())
{
<form class="form-horizontal">
<fieldset>
<legend>List of Departments:</legend>
<table border="1" cellspacing="1">
<tr>
<th>
Id
</th>
<th>
Name
</th>
<th>
Company
</th>
<th>
Manager
</th>
<th>
IsActive
</th>
<th>
</th>
</tr>
@foreach (var item in Model)
{
<tr>
<td>
@Html.DisplayFor(modelItem => item.DepartmentId)
</td>
<td>
@Html.DisplayFor(modelItem => item.DepartmentName)
</td>
<td>
@Html.DisplayFor(modelItem => item.Company.CompanyName)
</td>
<td>
@Html.DisplayFor(modelItem => item.Manager.MemberName)
</td>
<td>
@Html.DisplayFor(modelItem => item.IsActive)
</td>
<td>
@Html.ActionLink("Edit", "Edit", new { item.DepartmentId }) |
@Html.ActionLink("Delete", "Delete", new { item.DepartmentId })
</td>
</tr>
}
</table>
<p></p>
<p>
@Html.ActionLink("Create New", "Create")
</p>
<p></p>
<p>
@Html.ValidationMessage("Error");
</p>
</fieldset>
</form>
}
在视图中我放了@ Html.ValidationMessage(&#34;错误&#34;)但是那里没有显示错误信息。
答案 0 :(得分:1)
首先,你有一个重复的表格
@using (Html.BeginForm())
{
<form class="form-horizontal">
@Html.BeginForm
会为您处理form
标记。
其次,尝试添加@Html.ValidationSummary
,如此
@using (Html.BeginForm())
{
@Html.ValidationSummary()
<fieldset>
第三,您需要引用正确的脚本文件。通常,这将在布局页面中完成,但这取决于您。
添加对
的引用jquery
jquery.validate.js
jquery.validate.unobtrusive.j
可以找到CDN here
假设您没有输入DepartmentName
,请按提交,您应该会看到错误消息。
请注意,您网页的model
必须为DepartmentViewModel
。在上面的示例中,它不是。
答案 1 :(得分:1)
你正在重定向,所以模型状态已经消失。你可以通过tempdata保存它,但我不会这样(How do I maintain ModelState errors when using RedirectToAction?)。您可以使用特殊字段和一些通知消息(例如toastr)显示错误,或者只是停留在同一视图上,然后将显示模型状态错误。
public ActionResult Delete(string departmentId)
{
try
{
new DepartmentManager().DeleteDepartment(departmentId);
}
catch (System.Exception exception)
{
ModelState.AddModelError("Error", "Unable to delete department. Try again, and if the problem persists see your system administrator.");
//return RedirectToAction("Index", "Department");
YOU SHOULD ADD MESSAGE TO VIEWDATA HERE, OR RETURN SAME VIEW(make delete POST action also)
}
return RedirectToAction("Index", "Department");
}
答案 2 :(得分:0)
尝试添加验证摘要,如@glosrob建议的那样
@using (Html.BeginForm())
{
@Html.ValidationSummary()
...
也可以使用ValidationMessageFor
之类的
<td>
@Html.DisplayFor(modelItem => item.DepartmentName)
@Html.ValidationMessageFor(v=>v.DepartmentName)
</td>