我有一个 MVC 应用程序用作概念验证，但在将我们设计的一部分实施到其中时遇到问题。
我有 TaxRate.cs：
RUN echo "$env" >> path/to/angular/file/controller
TaxGroup.cs：
[Key]
public short TaxId { get; set; }
public short LocationId { get; set; }
[Column("TaxRate", TypeName = "decimal(12, 5)")]
[Display(Name = "Rate")]
public decimal TaxRate1 { get; set; }
[Required]
[StringLength(21)]
public string Name { get; set; }
[Required]
[StringLength(100)]
public string Description { get; set; }
[Column(TypeName = "decimal(12, 2)")]
[Display(Name = "Taxed Amount Minimum")]
public decimal AmountMin { get; set; }
[Column(TypeName = "decimal(12, 2)")]
[Display(Name = "Tax Amount Maximum")]
public decimal AmountLimit { get; set; }
public bool IsActive { get; set; }
public int? ModifiedBy { get; set; }
[NotMapped]
public DateTime ValidFrom { get; set; }
[NotMapped]
public DateTime ValidTo { get; set; }
TaxGroupViewModel.cs：
[Key]
public short TaxGroupId { get; set; }
public short LocationId { get; set; }
[Required]
[StringLength(21)]
public string Name { get; set; }
[Required]
[StringLength(100)]
public string Description { get; set; }
public bool IsActive { get; set; }
public int? ModifiedBy { get; set; }
[NotMapped]
public DateTime ValidFrom { get; set; }
[NotMapped]
public DateTime ValidTo { get; set; }
此视图用于将税率从 TaxRates 添加到 AppliedRates。
AddRates.cshtml：
public short TaxGroupId { get; set; }
public short LocationId { get; set; }
public string Name { get; set; }
public IEnumerable<SelectListItem> TaxRates { get; set; }
public IEnumerable<SelectListItem> AppliedRates { get; set; }
我遇到的问题是，当我提交表单时，TaxRates 和 AppliedRates 作为 NULL 返回到控制器方法。做了一些研究，我发现这可能是因为我必须为 TaxRate.cs 创建一个自定义模型绑定。这是唯一的方法还是有其他方法？
编辑：
@model TaxGroupViewModel
@{
var loc = ViewData["LocationId"];
}
<main>
@using (Html.BeginForm("AddRates", "Location", FormMethod.Post))
{
<h1>Add taxes to @Model.Name</h1>
<input hidden="hidden" asp-for="LocationId" value="@Model.LocationId" />
<input hidden="hidden" asp-for="TaxGroupId" value="@Model.TaxGroupId" />
<input hidden="hidden" asp-for="Name" value="@Model.Name" />
<section class="form-row">
<div class="col-md-6">
<h2>Available Rates</h2>
@Html.ListBoxFor(m => m.TaxRates, new SelectList(Model.TaxRates, "Value", "Text"), new { @class = "col-md-6 form-control" })
<br />
<input type="button" id="apply" value="Add" class="col-md-2" />
</div>
<div class="col-md-6">
<h2>Applied Rates</h2>
@Html.ListBoxFor(m => m.AppliedRates, Enumerable.Empty<SelectListItem>(), new { @class = "col-md-6 form-control" })
<br />
<input type="button" id="remove" value="Remove" class="col-md-2" />
</div>
</section>
<section class="form-row">
<div class="col-md-12">
<button id="savebtn" type="submit" class="col-md-2 btn btn-primary" onlick="">Save</button>
@Html.ActionLink("Cancel", "Edit", "Location", new { locationId = loc }, new { @class = "btn btn-secondary col-md-2" })
</div>
</section>
}
</main>
<script>
$('#apply').click(function () {
inHTML = "";
$("#TaxRates option:selected").each(function () {
var optionVal = $(this).val();
var exists = false;
$('#AppliedRates option').each(function () {
if (this.value == optionVal) {
exists = true;
}
});
if (!exists) {
inHTML += '<option value="' + $(this).val() + '">' + $(this).text() + '</option>';
}
});
$("#AppliedRates").append(inHTML);
var ids = "";
$('#AppliedRates option').each(function () {
ids += this.value + ",";
});
$('#hidden1').val(ids);
});
$('#remove').click(function () {
$("#AppliedRates option:selected").remove();
var ids = "";
$('#AppliedRates option').each(function () {
ids += $(this).val() + ";";
});
$('#hidden1').val(ids);
});
}
</script>
AddRates 方法：
LocationId=94&TaxGroupId=12&Name=asdfasd&TaxRates=396&TaxRates=397&TaxRates=398&TaxRates=399&__答案 0 :(得分：-2)
在您的 AddRates 控制器中有一个返回视图命令，您应该像这样编辑
TaxGroupViewModel t=new TaxGroupViewModel();
Return view(t.tolist());