1
我試圖將選擇列表中的選定項保存到我的數據庫,但由於某種原因,我的ID始終保持爲0。將選擇列表中的選定項保存到數據庫
這是視圖模型我使用:
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
}
的觀點:
<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,出於某種原因該model.FactoryId始終保持null
。已經嘗試了很多,並且一直在努力幾個小時。
您選擇並且您'發佈'並且在'發佈'行動中您總能找到'FactoryId'(即我s,'model.FactoryId')爲0.那是你在說什麼?如何在ViewModel(名稱,類型等)的其他項目?他們是否完全按照你輸入的內容來做? – Ian