我正在尝试使用我使用的视图模型的多个字段在ASP.NET MVC中应用搜索过滤器。我已经接近它，但是正在显示此错误：
传递到字典中的模型项是'system.data.entity.dbset`1 [hms.models.tblpatient]'的类型，但是该词典需要类型'hms.viewmodels.searchviewmodels.searchviewmodel'/blockquote>
我不知道我在做什么错。
这是我的代码：
SearchController.cs：public ActionResult Index(SearchViewModel searchModel) { var search = new SearchDAL(); var model = search.GetSearchResults(searchModel); return View(model); }
ViewModel.cs：public class SearchViewModel { public SearchViewModel() { PatientsSearch = new List<SearchResult>(); } public int? Patient_ID { set; get; } public string Patient_Name { set; get; } public string Patient_Address { set; get; } public string Contact_Number { set; get; } public int Age { set; get; } public string Gender { set; get; } public List<SearchResult> PatientsSearch { set; get; } } public class SearchResult { public int? Patient_ID { set; get; } public string Patient_Name { set; get; } public string Patient_Address { set; get; } public string Contact_Number { set; get; } public int Age { set; get; } public string Gender { set; get; } }
SearchDAL.cs：public class SearchDAL { private HMS_DBEntity Context; public SearchDAL() { Context = new HMS_DBEntity(); } public IQueryable<tblPatient> GetSearchResults(SearchViewModel searchModel) { var result = Context.tblPatients.AsQueryable(); if (searchModel != null) { if (searchModel.Patient_ID.HasValue) result = result.Where(x => x.Patient_id == searchModel.Patient_ID); if (!string.IsNullOrEmpty(searchModel.Patient_Name)) result = result.Where(x => x.Patient_Name.Contains(searchModel.Patient_Name)); if (!string.IsNullOrEmpty(searchModel.Patient_Address)) result = result.Where(x => x.Patient_address.Contains(searchModel.Patient_Address)); if (!string.IsNullOrEmpty(searchModel.Contact_Number)) result = result.Where(x => x.Contact_no.Contains(searchModel.Contact_Number)); } return result; } }
Index.cshtml：@using HMS.ViewModels @model HMS.ViewModels.SearchViewModel @*@model HMS.Models.tblPatient*@ @{ ViewBag.Title = "Index"; } <section class="content"> @using (Html.BeginForm("Index", "Search", FormMethod.Get)) { @Html.AntiForgeryToken() @Html.ValidationSummary(false, "", new { @class = "text-danger" }) <div class="container-fluid"> <div class="block-header"> <h2>Patients Record</h2> </div> <div class="row clearfix"> <div class="col-lg-12 col-md-12 col-sm-12"> <div class="card"> <div class="body"> <div class="row clearfix"> <div class="col-sm-6 col-md-6 col-lg-6"> <div class="form-group"> <div class="form-line"> @Html.TextBoxFor(x => x.Patient_ID, new { @type = "Text", @class = "form-control", @id = "PatientID", @placeholder = "Patiend ID" }) </div> </div> </div> <div class="col-sm-6 col-md-6 col-lg-6"> <div class="form-group"> <div class="form-line"> @Html.TextBoxFor(x => x.Patient_Name, new { @type = "Text", @class = "form-control", @id = "PatientName", @placeholder = "Patiend Name" }) </div> </div> </div> </div> <div class="row clearfix"> <div class="col-sm-6 col-md-6 col-lg-6"> <div class="form-group"> <div class="form-line"> @Html.TextBoxFor(x => x.Patient_Address, new { @type = "Text", @class = "form-control", @id = "PatientAddress", @placeholder = "Patient Address" }) </div> </div> </div> <div class="col-sm-6 col-md-6 col-lg-6"> <div class="form-group"> <div class="form-line"> @Html.TextBoxFor(x => x.Contact_Number, new { @type = "Text", @class = "form-control", @id = "ContactNo", @placeholder = "Contact Number" }) </div> </div> </div> </div> <div class="row clearfix"> <div class="col-sm-6 col-md-6 col-lg-6"> <input type="submit" id="Submit" class="btn btn-raised g-bg-cyan waves-effect" value="Search" /> </div> </div> </div> </div> </div> </div> </div> } <div class="row clearfix"> <div class="container-fluid"> <div class="col-lg-12 col-md-12 col-sm-12"> <div class="card"> <div class="body table-responsive"> <table class="table table-bordered table-striped table-hover js-basic-example dataTable"> <tr> <th> @Html.DisplayNameFor(model => model.Patient_Name) </th> <th> @Html.DisplayNameFor(model => model.Patient_Address) </th> <th> @Html.DisplayNameFor(model => model.Contact_Number) </th> <th> @Html.DisplayNameFor(model => model.Age) </th> <th> @Html.DisplayNameFor(model => model.Gender) </th> <th></th> </tr> @{ if (Model.PatientsSearch != null && Model.PatientsSearch.Count > 0) { foreach (var item in Model.PatientsSearch) { <tr> <td>@item.Patient_Name</td> <td>@item.Patient_Address</td> <td>@item.Contact_Number</td> <td>@item.Age</td> <td>@item.Gender</td> </tr> } } } </table> </div>
错误消息清晰。您在视图index.cshtml中定义的模型是
@model HMS.ViewModels.SearchViewModel
但是，您传递给视图的数据是GetSearchResults的结果，它是 System.data.entity.dbset`1 [hms.models.tblpatient]
var model = search.GetSearchResults(searchModel);
return View(model);
我想你知道如何使它现在起作用。
这是一个类型的不匹配问题：
return View(model);
因此，在返回结果对象时，内部getsearchResults方法，进行以下更改：
result = new List<SearchViewModel>(result);
return result;
，然后将您的返回类型从iQueryable更改为getsearchResults((方法
public List<SearchViewModel> GetSearchResults(SearchViewModel searchModel)