当我使用我的视图页面创建患者时，我遇到了这个问题：
InvalidOperationException：传递到 ViewDataDictionary 的模型项的类型为“System.Collections.Generic.List`1[PatientHut.Data.Models.Patient]”，但此 ViewDataDictionary 实例需要“PatientHut.Data.Models”类型的模型项。病人'。
我不知道如何解决我的问题，我已经尝试了几个小时。我相信这是一个简单的修复。
实际上，我刚刚意识到，当我尝试运行它时，视图中的所有页面都会出现相同的错误。我究竟做错了什么？
My Model:
namespace PatientHut.Data.Models
{
public enum Gender
{
Male, Female
}
public class Patient
{
public int Id { get; set; }
public string Name { get; set; }
public Gender Gender { get; set; }
public DateTime DateOfBirth { get; set; }
public string EmailAddress { get; set; }
public string PhoneNumber { get; set; }
public string Address { get; set; }
public int Age => (DateTime.Now - DateOfBirth).Days / 365;
//EF Relationship - A Patient can have many bookings
public IList<AppointmentBooking> Bookings { get; set; } = new
List<AppointmentBooking>();
}
}
My services:
public Patient AddPatient(Patient u) ///!!!!!!!!!!!!!!
//an Id to check(its new).
{
var existing = GetPatientByEmail(u.EmailAddress); //check if user has same email
address when creating a new user
if (existing != null)
{
return null;
//if no user the same is found return null
}
{
var user = new Patient //create new user object
{
Name = u.Name,
Gender = u.Gender,
DateOfBirth = u.DateOfBirth,
EmailAddress = u.EmailAddress,
PhoneNumber = u.PhoneNumber,
Address = u.Address,
//Add users details
};
db.Patients.Add(user); // Add to the DB
db.SaveChanges(); //SaveChanges to the DB
return user; // returning new user
}
}
My controller
public Patient AddPatient(Patient u) ///!!!!!!!!!!!!!!
//an Id to check(its new).
{
var existing = GetPatientByEmail(u.EmailAddress); //check if user has same email
address when creating a new user
if (existing != null)
{
return null;
//if no user the same is found return null
}
{
var user = new Patient //create new user object
{
Name = u.Name,
Gender = u.Gender,
DateOfBirth = u.DateOfBirth,
EmailAddress = u.EmailAddress,
PhoneNumber = u.PhoneNumber,
Address = u.Address,
//Add users details
};
db.Patients.Add(user); // Add to the DB
db.SaveChanges(); //SaveChanges to the DB
return user; // returning new user
}
}
My view
@model PatientHut.Data.Models.Patient
@{
ViewData["Title"] = "Create";
}
<h1>Create</h1>
<h4>Patient</h4>
<hr />
<div class="row">
<div class="col-md-4">
<form asp-action="Create">
<div asp-validation-summary="ModelOnly" class="text-danger"></div>
<div class="form-group">
<label asp-for="Name" class="control-label"></label>
<input asp-for="Name" class="form-control" />
<span asp-validation-for="Name" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="Gender" class="control-label"></label>
<input asp-for="Gender" class="form-control" />
<span asp-validation-for="Gender" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="DateOfBirth" class="control-label"></label>
<input asp-for="DateOfBirth" class="form-control" />
<span asp-validation-for="DateOfBirth" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="EmailAddress" class="control-label"></label>
<input asp-for="EmailAddress" class="form-control" />
<span asp-validation-for="EmailAddress" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="PhoneNumber" class="control-label"></label>
<input asp-for="PhoneNumber" class="form-control" />
<span asp-validation-for="PhoneNumber" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="Address" class="control-label"></label>
<input asp-for="Address" class="form-control" />
<span asp-validation-for="Address" class="text-danger"></span>
</div>
<div class="form-group">
<input type="submit" value="Create" class="btn btn-primary" />
</div>
</form>
</div>
</div>
<div>
<a asp-action="Index">Back to List</a>
</div>
@section Scripts {
@{await Html.RenderPartialAsync("_ValidationScriptsPartial");}
}