C# 加载编辑页面时未设置下拉列表,但已设置视图模型的其余属性
我的数据库中有两个表,分别是Vendors和VendorPriceBreaks:C# 加载编辑页面时未设置下拉列表,但已设置视图模型的其余属性,c#,asp.net,asp.net-mvc,C#,Asp.net,Asp.net Mvc,我的数据库中有两个表,分别是Vendors和VendorPriceBreaks: Vendors ----------------- VendorID (PK) Name VendorPriceBreaks ----------------- VendorPriceBreakID (PK) VendorID (FK) Price PaymentTypeID (FK) 我有一个单一的查看页面,可以同时添加供应商和供应商PriceBreaks 以下是我的VendorsViewModel: pub
Vendors
-----------------
VendorID (PK)
Name
VendorPriceBreaks
-----------------
VendorPriceBreakID (PK)
VendorID (FK)
Price
PaymentTypeID (FK)
我有一个单一的查看页面,可以同时添加供应商和供应商PriceBreaks
以下是我的VendorsViewModel:
public class VendorsViewModel
{
[HiddenInput(DisplayValue = false)]
public int VendorId { get; set; }
public string Name { get; set; }
public IEnumerable<VendorPriceBreaksViewModel> VendorPriceBreaks { get; set; }
}
public class VendorPriceBreaksViewModel
{
[HiddenInput(DisplayValue = false)]
public int VendorPriceBreakId { get; set; }
public double? Price { get; set; }
public int? PaymentTypeId { get; set; }
public IEnumerable<PaymentType> PaymentTypes { get; set; }
}
公共类供应商视图模型
{
[HiddenInput(DisplayValue=false)]
public int VendorId{get;set;}
公共字符串名称{get;set;}
公共IEnumerable VendorPriceBreaks{get;set;}
}
这是我的供应商PriceBreaksviewmodel:
public class VendorsViewModel
{
[HiddenInput(DisplayValue = false)]
public int VendorId { get; set; }
public string Name { get; set; }
public IEnumerable<VendorPriceBreaksViewModel> VendorPriceBreaks { get; set; }
}
public class VendorPriceBreaksViewModel
{
[HiddenInput(DisplayValue = false)]
public int VendorPriceBreakId { get; set; }
public double? Price { get; set; }
public int? PaymentTypeId { get; set; }
public IEnumerable<PaymentType> PaymentTypes { get; set; }
}
公共类供应商PriceBreaksviewModel
{
[HiddenInput(DisplayValue=false)]
公共整数VendorPriceBreakId{get;set;}
公共双价{get;set;}
public int?PaymentTypeId{get;set;}
公共IEnumerable PaymentTypes{get;set;}
}
以下是供应商的查看页面:
<%: Html.TextBoxFor(m => m.Name)%>
<table id="dynamic-rows" cellpadding="0" cellspacing="0">
<% foreach (var item in Model.VendorPriceBreaks)
Html.RenderPartial("VendorPriceBreakRow", item);
%>
</table>
m.Name)%%>
这是我的控制:
<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<CopyCraft.WebUI.Areas.Admin.Models.VendorPriceBreaksViewModel>" %>
<tr class="dynamic-row">
<% using(Html.BeginCollectionItem("vendorPriceBreaks")) { %>
<td>$<%= Html.TextBoxFor(m => m.Price) %></td>
<td><%= Html.DropDownListFor(m => m.PaymentTypeId, new SelectList(Model.PaymentTypes, "PaymentTypeID", "Name"), "- Select a Payment Type -")%></td>
<% } %>
</tr>
$m.Price)%>
m、 PaymentTypeId,新建选择列表(Model.PaymentTypes,“PaymentTypeId”,“Name”),“-选择一种付款类型-”)%>
当我编辑一个供应商并加载价格分解时,会设置价格,但不会在下拉列表中设置PaymentType值
以下是编辑供应商时的功能:
public ActionResult Edit(int id)
{
var vendor = _adminRepository.GetVendor(id);
List<VendorPriceBreaksViewModel> priceBreakssViewModels = new List<VendorPriceBreaksViewModel>();
foreach (VendorPriceBreak priceBreak in vendor.VendorPriceBreaks)
{
priceBreaksViewModels.Add(new VendorPriceBreaksViewModel
{
Price = sheetPrice.Price,
PaperUnitTypeId = sheetPrice.PaperUnitTypeID,
PaperUnitTypes = _adminRepository.GetAllPaperUnitTypes()
}
);
}
var viewModel = new VendorsViewModel
{
VendorId = vendor.VendorID,
Name = vendor.Name,
VendorPriceBreakSheetPrices = sheetPricesViewModels
};
return View(viewModel);
}
public ActionResult编辑(int-id)
{
var vendor=\u adminRepository.GetVendor(id);
List priceBreakssViewModels=新列表();
foreach(卖方价格下跌卖方价格下跌。卖方价格下跌)
{
priceBreaksViewModels.Add(新供应商Pricebreaksviewmodel
{
价格=单张价格。价格,
PaperUnitTypeId=sheetPrice.PaperUnitTypeId,
PaperUnitTypes=\u adminRepository.GetAllPaperUnitTypes()
}
);
}
var viewModel=新供应商viewModel
{
VendorId=vendor.VendorId,
Name=vendor.Name,
VendorPriceBreakSheetPrices=图纸价格查看模型
};
返回视图(viewModel);
}
因此,正在加载下拉列表的数据,但未设置选定的值。但是价格值是在文本框中设置的
我不确定发生了什么。尝试使用以下代码:
<%= Html.DropDownListFor(m => m.PaymentTypeId,
new SelectList(Model.PaymentTypes, "PaymentTypeID", "Name", Model.PaymentTypeId),
"- Select a Payment Type -")%>
m.PaymentTypeId,
新的选择列表(Model.PaymentTypes、“PaymentTypeID”、“Name”、Model.PaymentTypeID),
“-选择付款类型-”)%>
这里有更详细的分析-。就是这样:)感谢您花时间查看我的所有代码。