entity framework - Create a DropDownList in MVC5 for a foreign key value using EF6

Question

I've been googling for 3 days now and I'm totally lost between different methods of doing what I want. I want to add a DropDownList to my view for a foreign key.

These are my model classes:

public class PaymentType
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int Id { get; set; }

    public string Name { get; set; }
}

public class Payment 
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int Id { get; set; }

    public string Name { get; set; }
    public PaymentType PaymentType { get; set; }
    public int Amount { get; set; }
    public string Date { get; set; }
}

and this is my controller:

public ActionResult Payment()
{
    return View();
}

Then I add a view for Create from model:

@using (Html.BeginForm()) 
{
    @Html.AntiForgeryToken()
        
    <div class="form-horizontal">
        <h4>Payment</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">
            @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Name, "", new { @class = "text-danger" })
            </div>
        </div>

    <div class="form-group">
        @Html.LabelFor(model => model.Amount, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.EditorFor(model => model.Amount, new { htmlAttributes = new { @class = "form-control" } })
            @Html.ValidationMessageFor(model => model.Amount, "", new { @class = "text-danger" })
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.Date, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.EditorFor(model => model.Date, new { htmlAttributes = new { @class = "form-control" } })
            @Html.ValidationMessageFor(model => model.Date, "", new { @class = "text-danger" })
        </div>
    </div>

    <div class="form-group">
        <div class="col-md-offset-2 col-md-10">
            <input type="submit" value="Create" class="btn btn-default" />
        </div>
    </div>
</div>
}

I tried to add the dropdownlist Like this:

    <div class="form-group">
    @Html.LabelFor(model => model.PaymentType, htmlAttributes: new { @class = "control-label col-md-2" })
    <div class="col-md-10">
        @Html.DropDownListFor(model => model.PaymentType, new SelectList(Model.PaymentType, "Id", "Name", Model.PaymentTypet), "--select--")
        @Html.ValidationMessageFor(model => model.PaymentType, "", new { @class = "text-danger" })
    </div>

But I get this error:

Error CS1503 Argument 1: cannot convert from 'Charity.Models.PaymentType' to 'System.Collections.IEnumerable'

I don't know if the problem is from the model, controller, view or all of them.

Any suggestion would be appreciated.

Answer 1

等待大神答复