1
我试图将选择列表中的选定项保存到我的数据库,但由于某种原因,我的ID始终保持为0。将选择列表中的选定项保存到数据库
这是视图模型我使用:
public class ProductViewModel
{
#region Properties
[Required]
[Display(Name = "Naam")]
public string Name { get; set; }
[Required]
[Display(Name = "Type")]
public string Type { get; set; }
[Required]
[Display(Name = "Waarschuwing")]
public int WarningAmount { get; set; }
[Required]
[Display(Name = "Inkoopwaarde")]
public int Buy { get; set; }
[Required]
[Display(Name = "Verkoopwaarde")]
public int Sell { get; set; }
public int FactoryId { get; set; }
public SelectList FactoriesList { get; set; }
#endregion
}
的观点:
<div class="form-group">
<label>Fabriek</label>
<select asp-for="FactoryId" asp-items="Model.FactoriesList">
<option>Kies een fabriek</option>
</select>
</div>
而在去年,我的控制器:
public async Task<IActionResult> Create()
{
ProductViewModel model = new ProductViewModel();
var factories = _context.Factories.ToList();
model.FactoriesList = new SelectList(factories, "FactoryId", "Name");
return View(model);
}
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<IActionResult> Post(
[Bind("Name", "Type", "WarningAmount", "Buy", "Sell")] ProductViewModel model)
{
try
{
var config = new MapperConfiguration(cfg => cfg.CreateMap<ProductViewModel, Product>());
var mapper = config.CreateMapper();
Product product = mapper.Map<ProductViewModel, Product>(model);
product.Factory = _context.Factories.Where(w => w.FactoryId == model.FactoryId).First();
_context.Products.Add(product);
await _context.SaveChangesAsync();
}
}
所以,出于某种原因该model.FactoryId始终保持null
。已经尝试了很多,并且一直在努力几个小时。
您选择并且您'发布'并且在'发布'行动中您总能找到'FactoryId'(即我s,'model.FactoryId')为0.那是你在说什么?如何在ViewModel(名称,类型等)的其他项目?他们是否完全按照你输入的内容来做? – Ian