在 asp.net MVC 的同一视图中列出和创建
本文关键字:创建 视图 net asp MVC | 更新日期: 2023-09-27 18:32:12
我有以下模型类
public class ProductViewModel
{
public Product Products { get; set; }
public IEnumerable<Product> LProducts { get; set; }
}
public partial class Product
{
public string id { get; set; }
public string detail { get; set; }
}
然后我对列表和创建都有以下视图
@model albaraka.Models.ProductViewModel
<table class="table">
<tr>
<th>
ID
</th>
<th>
Detail
</th>
</tr>
@foreach (var obj in Model.LProducts)
{
<tr>
<td>
@Html.DisplayFor(modelItem => obj.id)
</td>
<td>
@Html.DisplayFor(modelItem => obj.detail)
</td>
</tr>
}
</table>
<div>
@using ())
{
<div>
<fieldset>
<legend>Account Information</legend>
<div class="editor-label">
@Html.LabelFor(m => m.id)
</div>
<div class="editor-field">
@Html.TextBoxFor(m => m.Products.id)
@Html.ValidationMessageFor(m => m.Products.id)
</div>
<div class="editor-label">
@Html.LabelFor(m => m.Products.detail)
</div>
<div class="editor-field">
@Html.TextBoxFor(m => m.Products.detail)
@Html.ValidationMessageFor(m => m.Products.detail)
</div>
<p>
<input type="submit" value="Submit" />
</p>
</fieldset>
</div>
}
</div>
@section Scripts
{}
这是列表的控制器方法
[HttpGet]
public ViewResult Product_List()
{
ProductViewModel viewModelList = new ProductViewModel();
viewModelList.LProducts = from products in db.Product
where products.details == "Pending"
select products;
return View(viewModelList.LProducts.ToList());
}
但在这里我收到以下错误
传递到字典中的模型项的类型为 'System.Collections.Generic.List'1[projectname.型号.产品]',但是 此字典需要类型的模型项 '项目名称。模型.产品视图模型'.
错误是不言自明的,您的视图接受@model albaraka.Models.ProductViewModel
而不是@model IList<albaraka.Models.ProductViewModel>
。在您的视图中,您正在使用@model albaraka.Models.ProductViewModel
,它指示视图预期的模型类型为 ProductViewModel
:
[HttpGet]
public ViewResult Product_List()
{
ProductViewModel viewModelList = new ProductViewModel();
viewModelList.LProducts = (from products in db.AB_Product
where products.details == "Pending"
select products).ToList();
return View(viewModelList);
}
该错误会准确地告诉您问题所在。您正在向视图而不是它所期望的产品模型视图提供产品对象列表。将控制器代码更改为以下内容:
[HttpGet]
public ViewResult Product_List()
{
ProductViewModel viewModelList = new ProductViewModel();
viewModelList.LProducts = (from products in db.Product
where products.details == "Pending"
select products).ToList();
return View(viewModelList);
}
好吧,异常文本是不言自明的 - 您将不正确的类型传递给视图。
它应该是
public ViewResult Product_List()
{
ProductViewModel viewModelList = new ProductViewModel();
viewModelList.LProducts = (from products in db.Product
where products.details == "Pending"
select products).ToList();
return View(viewModelList);
}
错误的直接原因是作为参数传递的内容(列表)与视图(ProductViewModel
类的实例)所期望的内容的类型不匹配。
在控制器中,而不是行:
return View(viewModelList.LProducts.ToList());
请尝试以下操作:
return View(
new ProductViewModel {LProducts = viewModelList.LProducts.ToList()}
);