我收到一条错误消息，提示：
df1 <- structure(list(First.Name = c("John", "John", "John", "Lisa",
"Lisa"), Last.Name = c("Mars", "Mars", "Mars", "Smith", "Smith"
), Country = c("UK", "UK", "UK", "USA", "USA"), Unit = c("Sales",
"Sales", "Sales", "HHRR", "HHRR"), Hospital = c("South", "South",
"South", "North", "North")), .Names = c("First.Name", "Last.Name",
"Country", "Unit", "Hospital"), class = "data.frame", row.names = c(NA,
-5L))
df2 <- structure(list(First.Name = c("John", "Peter", "Frank", "Marie",
"Lisa", "John"), Last.Name = c("Valjean", "Smith", "Mars", "Valjean",
"Smith", "Mars"), ID = 1254:1259), .Names = c("First.Name", "Last.Name",
"ID"), class = "data.frame", row.names = c(NA, -6L))
我看过几篇关于此的文章，但这些答案都没有解决我的问题。我尝试在Visual Studio中单击视图，然后将其转到适当的方法。我尝试添加具有主视图和索引的主控制器，但这也无济于事。我尝试修改我的路由配置，但也没有用。
这是我的退货声明，给我一些问题：
Exception Details: System.InvalidOperationException: The view 'Index' or its
master was not found or no view engine supports the searched locations. The
following locations were searched:
~/Views/Request/Index.aspx
~/Views/Request/Index.ascx
~/Views/Shared/Index.aspx
~/Views/Shared/Index.ascx
~/Views/Request/1819.master
~/Views/Shared/1819.master
~/Views/Request/1819.cshtml
~/Views/Request/1819.vbhtml
~/Views/Shared/1819.cshtml
~/Views/Shared/1819.vbhtml
我正在调用此方法：
return View("Index", requestVM.AidYear);
我尝试过：
public ActionResult Index(string aidYear)
我尝试过：
return View("Index", (object)requestVM.AidYear);
最后2个得到：
return View("Index", model:requestVM.AidYear);
这发生在我的本地计算机和生产服务器上。我所在的团队在发布该文件时确定该文件正在运行，因为这是一个尚未注意到的大问题，因此我们不确定为什么它不再起作用。自发布此应用程序以来，没有对生产进行任何更改，因此我们知道没有人做任何事情来搞砸它。
以防万一，这是我的路线配置：
System.InvalidOperationException: The model item passed into the dictionary is of type 'System.String', but this dictionary requires a model item of type 'ScholarshipDisbursement.ViewModels.Request.RequestViewModel'.
编辑： 在我看来，我有一个“请求”文件夹，并且在该文件夹内是一个Index.cshtml。在该视图上，我有一个表单提交给方法SubmitScholarshipRequest。该方法在请求控制器上。
在该方法中，我运行各种检查，如果有错误，则将其添加到ModelState中。如果ModelState无效，则：
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Request", action = "Index", id = UrlParameter.Optional }
);
}
否则我：
return View("Index", requestVM.AidYear);
这是我的观点：
return RedirectToAction("Index", "Request", new { @aidYear = requestVM.AidYear });
这是表单调用的方法：
@using ScholarshipDisbursement.Helpers
@using ScholarshipDisbursement.ViewModels.Request
@model RequestViewModel
@{
ViewBag.Title = "Scholarship Request";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<div class="requestIndexRoundedShadow">
<div class="pageTitleHeader">
<span><img src="~/Content/img/gradCap.ico" class="headerImg" /></span>
<span class="headerTitle"><b>Scholarship Disbursement Request</b></span>
<hr style="border-top: 1px solid black">
@using (Html.BeginForm("SubmitScholarshipRequest", "Request",
FormMethod.Post, new { id = "SubmitTutorRequestFrm" }))
{
@Html.AntiForgeryToken()
<span id="aidYearLbl" Style="font-size: 14px;font-weight: bold">Academic
Year: </span>
@Html.DropDownListFor(m => m.AidYear, new SelectList(Model.AidYears,
"Code", "Name"), new { id = "aidYear", onchange = "onChangeYear()", Style =
"font-size: 14px" })
if (Model.Scholarships.Any())
{
<br />
<br />
<table style="width: 100%;">
<tr>
<th class="headerBox tableHeader" colspan="3">Scholarships
for @Model.User.DeptName</th>
</tr>
<tr>
<th class="headerBox columnHeader" style="width:
500px;">Scholarship Name</th>
<th class="headerBox columnHeader" style="width:
100px;">Amount</th>
<th class="headerBox columnHeader" style="width:
100px;">Requested</th>
</tr>
@{ int i = 1; }
@foreach (var s in Model.Scholarships)
{
var rowColor = i % 2 == 0 ? "E8E8E8" : "ffffff";
<tr style="background-color: #@rowColor;">
<td class="rowValue">@Html.ActionLink(s.Name,
"ScholarshipRequest", "Request", new { aidYear = s.AidYear, fundCode = s.Id,
}, new { target = "_blank" })</td>
<td class="rowValue">@s.AmountTotal</td>
<td class="rowValue">@s.AmountRequested</td>
</tr>
i++;
}
</table>
<br />
<br />
if (Model.AvailScholarships.Any())
{
<table style="width: 100%">
<tr>
<th class="headerBox tableHeader" colspan="6">Request
Scholarship</th>
</tr>
<tr>
<th class="headerBox columnHeader">Scholarship</th>
<th class="headerBox columnHeader">Banner Id</th>
<th class="headerBox columnHeader">Student Name</th>
<th class="headerBox columnHeader">Amount</th>
<th class="headerBox columnHeader">Term</th>
<th class="headerBox columnHeader">Comments</th>
</tr>
<tr>
<td class="rowValue" style="width: 200px">@Html.DropDownListFor(m => m.ScholarshipId, new SelectList(Model.AvailScholarships, "Id", "Name"), "", new { id = "scholars" })</td>
<td class="rowValue" style="width: 125px">@Html.TextBoxFor(m => m.StudentId, new { autocomplete = "off", Style = "width:100%", id = "bannerId", maxlength = "9" })</td>
<td class="rowValue" style="width: 225px"><span id="studentName"></span></td>
<td class="rowValue" style="width: 50px">@Html.TextBoxFor(m => m.Amount, new { autocomplete = "off", Style = "width:100%", id = "amount", Value = "", data_val_number = " " })</td>
<td class="rowValue" style="width: 70px">@Html.DropDownListFor(m => m.Term, new SelectList(Model.Terms, "Code", "Name"), "", new { Style = "width:70px", id = "term" })</td>
<td class="rowValue" style="width: auto">@Html.TextBoxFor(m => m.Comments, new { autocomplete = "off", Style = "width:100%", id = "comments" })</td>
</tr>
<tr>
<td>@Html.ValidationMessageFor(m => m.ScholarshipId)</td>
<td>@Html.ValidationMessageFor(m => m.StudentId)</td>
<td></td>
<td>@Html.ValidationMessageFor(m => m.Amount)</td>
<td>@Html.ValidationMessageFor(m => m.Term)</td>
<td>@Html.ValidationMessageFor(m => m.Comments)</td>
</tr>
</table>
<br />
<input type="submit" id="SubmitNomineeBtn" name="SubmitNomineeBtn" class="submitButton" value="Submit" />
<span id="warning"></span>
<br />
<br />
<div class="field-validation-error">
@Html.ErrorFor(ViewData, "ExceedsAmountError")
</div>
<div class="field-validation-error">
@Html.ErrorFor(ViewData, "DuplicateEntryError")
</div>
<div class="field-validation-error">
@Html.ErrorFor(ViewData, "NullStudent")
</div>
<div class="field-validation-error">
@Html.ErrorFor(ViewData, "NegativeAmount")
</div>
}
else
{
<div style="padding-right: 100px">
<img src="~/Content/img/alert.png" /> There are currently no funds available for the @Model.User.DeptName department.
</div>
}
}
else
{
<br />
<br />
<div style="padding-right: 100px">
<img src="~/Content/img/alert.png" /> There are currently no scholarships available for the @Model.User.DeptName department.
</div>
}
}
</div>
<script>
$('#help').click(function() {
var win = $('#window').data("kendoWindow");
win.open();
win.center();
win.top();
});
$(document).ready(function () {
if ($('#bannerId').val()) {
checkBannerId();
}
});
function checkBannerId() {
var student = $('#bannerId').val();
$.ajax({
type: "POST",
url: '@Url.Action("GetStudentName","Request")',
contentType: "application/json; charset=utf-8",
data: JSON.stringify({ bannerId: student }), // parameter aNumber
dataType: "json",
success: function (msg) {
if (msg.Result === "Null Student") {
$('#studentName').html("Error finding student name");
$('#studentName').css("color", "red");
$('#bannerId').css("border-color", "red");
$('#bannerId').css("color", "red");
$('#warning').html("Invalid Banner Id.");
$('#warning').css('color', 'red');
return;
} else {
$('#bannerId').css("border-color", "unset");
$('#bannerId').css("color", "black");
$('#studentName').html(msg.Result);
$('#studentName').css('color', 'black');
$('#warning').html("");
$('#warning').css('color', 'unset');
}
},
error: function () {
}
});
}
function onChangeYear() {
window.location = '@Url.Action("Index", "Request")?aidYear=' + $("#aidYear").val();
}
$('#amount').blur(function () {
if (isNaN($('#amount').val()) || $('#amount').val() < 0) {
$('#warning').html("Invalid amount ($, commas, and negative numbers not allowed).");
$('#warning').css('color', 'red');
$('#amount').css("border-color", "red");
$('#amount').css('color', "red");
} else {
$('#amount').css("border-color", "unset");
$('#amount').css("color", "unset");
$('#warning').html("");
$('#warning').css('color', 'unset');
}
});
$('#bannerId').blur(function () {
checkBannerId();
});
</script>
这是RequestController中的索引视图方法：
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult SubmitScholarshipRequest(RequestViewModel requestVM)
{
var scholarshipMgr = new ScholarshipStore();
var scholarship = scholarshipMgr.GetScholarship(requestVM.ScholarshipId, requestVM.AidYear);
double amountTotal = scholarship.AmountTotal;
double amountRequested = scholarship.AmountRequested;
double addTotal = amountRequested + requestVM.Amount;
string username = User.Identity.Name;
var user = new UserStore().GetUser(username);
var student = new StudentStore().GetStudent(requestVM.StudentId);
if (student == null)
{
ModelState.AddModelError("NullStudent","Unable to find Student");
}
var scholarshipRequestMgr = new ScholarshipRequestStore();
var scholarshipRequest = scholarshipRequestMgr.GetScholarshipRequest(requestVM.StudentId, requestVM.ScholarshipId, requestVM.AidYear);
if (scholarshipRequest != null)
{
ModelState.AddModelError("DuplicateEntryError", "Scholarship already requested for this student!");
}
if (addTotal > amountTotal)
{
ModelState.AddModelError("ExceedsAmountError", "Amount entered exceeds the total available!");
}
if (addTotal < 0)
{
ModelState.AddModelError("NegativeAmount", "Must be a positive number");
}
if (!ModelState.IsValid)
{
var aidYears = new AidYearStore().GetAidYears();
var scholarships = new ScholarshipStore().GetScholarships(user.DeptCode, requestVM.AidYear);
var availableScholarships = scholarships.Where(x => x.AmountTotal > x.AmountRequested);
var terms = new TermStore().GetAllTerms();
requestVM.AidYears = aidYears;
requestVM.User = user;
requestVM.Scholarships = scholarships;
requestVM.AvailScholarships = availableScholarships;
requestVM.Terms = terms;
return View("Index", requestVM.AidYear);
}
var scholarShipRequest = new ScholarshipRequest
{
AidYear = requestVM.AidYear,
ScholarshipId = requestVM.ScholarshipId,
StudentId = requestVM.StudentId,
Amount = requestVM.Amount,
TermCode = requestVM.Term,
Comments = requestVM.Comments,
DeptId = user.DeptCode,
DateCreated = DateTime.Now,
CreatedBy = username,
PIDM = new StudentStore().GetStudent(requestVM.StudentId).PIDM
};
new ScholarshipRequestStore().CreateScholarshipRequest(scholarShipRequest);
return RedirectToAction("Index", "Request", new { @aidYear = requestVM.AidYear });
}
答案 0 :(得分：1)
您的视图似乎具有标题：
@model ScholarshipDisbursement.ViewModels.Request.RequestViewModel
因此，您应该使用：
return View(requestVM);
对于该应用程序，应使用所有viewModel。
否则，我们将需要您的结构以提供更好的帮助。
答案 1 :(得分：1)
您的视图需要RequestViewModel，而不是字符串。因此，仅提供援助年是行不通的。这就是“索引”操作方法所期望的，但是这里我们只是直接加载视图，而不执行该操作方法（毕竟，我们已经在执行一个不同的操作方法）。因此，您需要在return语句中传递整个viewmodel对象。
此外，由于它不是称为“索引”的操作方法，因此您需要指定要返回的视图的名称。
我希望
return View("Index", requestVM);
将解决您的问题。
答案 2 :(得分：0)
我认为提示是在错误消息中。它正在寻找一个名为1819.cshtml的视图。
这是告诉它寻找一个具有requestVM.AidYear值的视图以用于母版页或模板页。
return View("Index", requestVM.AidYear);
如果要将模型传递给视图，请改用此方法。我传递的不是字符串（而不是字符串）（我假设requestVM.AidYear是）。因此，它将使用requestVM作为模型。
return View("Index", requestVM);
或者，这可能就是您想要的。使用
return RedirectToAction("Index", "Request", new { @aidYear = requestVM.AidYear });