asp.net 的MVC框架中，如何给DropDownList添加事件。在线等
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前台：
<%=html.DropDownList("module_list1", ViewData["module_list1"] as SelectList,"--请选择--")%>
后台:
public ActionResult Index()
IList<Express139.Model.ImageTypeInfo> modeltypeinfo = null;//声明一个list对象
modeltypeinfo = utils.maindata.GetAllType();//给一个list对象赋值
ViewData["module_list1"] = new SelectList(modeltypeinfo, "id", "TypeName", "id");//储存到ViewData中。
我想选择前台DropDownList的中的控件值的时候，触发一个后台的事件，比如那个事件名称叫做"AAA"
asp.net mvc 已经对html有了完全的控制权，这和在其他地方做级联效果有何不同？这主要用的是javascript，和mvc几乎沾不上边。 参考技术B 不是很清楚
MVC不是事件驱动的吧
可能是用jquery实现的 参考技术C 异步调用吧
如何使用trackerenableddbcontext在asp.net mvc5和代码中的实体框架中实现审计跟踪
【中文标题】如何使用trackerenableddbcontext在asp.net mvc5和代码中的实体框架中实现审计跟踪【英文标题】：How to implement audit trail in asp.net mvc5 and entity-framework in code first, using trackerenableddbcontext 【发布时间】：2019-12-02 12:47:03 【问题描述】：我正在使用实体框架和代码优先迁移开发 MVC5 应用程序，我想实施审计跟踪。我发现了一个名为 trackerenableddbcontext 的 NuGet 包，看起来很容易使用。但是，我确实安装了该软件包，并执行了以下代码，但仍然没有将任何内容添加到审计表中。
我已经实现了继承自Tracker Context，如代码所示
DBContext class
public class SIContext : TrackerContext //DbContext
public SIContext()
: base("name=SIConnectionString")
public virtual DbSet<Role> Roles get; set;
public virtual DbSet<User> Users get; set;
public virtual DbSet<Menu> Menus get; set;
public virtual DbSet<MenuPermission> MenuPermissions get; set;
public virtual DbSet<ProductCategory> ProductCategorys get; set;
public virtual DbSet<Product> Products get; set;
public virtual DbSet<Tax> Taxs get; set;
public virtual DbSet<ProductStock> ProductStocks get; set;
public virtual DbSet<PaymentMode> PaymentModes get; set;
public virtual DbSet<Sale> Sales get; set;
public virtual DbSet<InvoiceItems> InvoiceItemss get; set;
public virtual DbSet<Setting> Settings get; set;
public virtual DbSet<InvoiceFormat> InvoiceFormats get; set;
public virtual DbSet<InventoryType> InventoryTypes get; set;
public virtual DbSet<Purchase> Purchases get; set;
public virtual DbSet<Transaction> Transactions get; set;
public virtual DbSet<Invoice> Invoices get; set;
public virtual DbSet<LedgerAccount> LedgerAccounts get; set;
public virtual DbSet<Warehouse> Warehouses get; set;
public virtual DbSet<DuePayment> DuePayments get; set;
public virtual DbSet<Expense> Expenses get; set;
public virtual DbSet<DeliveryNote> DeliveryNotes get; set;
public virtual DbSet<GRV> GRVs get; set;
public virtual DbSet<Artisans> Artisans get; set;
public virtual DbSet<JobCard> JobCards get; set;
public virtual DbSet<Order> Orders get; set;
public virtual DbSet<InternalRequisitionForm> InternalRequisitionForms get; set;
public virtual DbSet<JobRequisition> JobRequisitions get; set;
public virtual DbSet<Stores> Stores get; set;
public virtual DbSet<Machine> Machines get; set;
public virtual DbSet<ListItems> listitem get; set;
public virtual DbSet<JobCardServices> JobCardServices get; set;
public virtual DbSet<JobCardMaterials> JobCardMaterials get; set;
public virtual DbSet<JobRequisitionMaterials> JobRequisitionMaterials get; set;
public virtual DbSet<JobRequisitionServices> JobRequisitionServices get; set;
public virtual DbSet<GRVMaterials> GRVMaterials get; set;
public virtual DbSet<Quotation> Quotations get; set;
public virtual DbSet<QuotationItems> QuotationItems get; set;
public virtual DbSet<DNoteMaterial> DNoteMaterials get; set;
public virtual DbSet<InvoiceMaterials> InvoiceMaterial get; set;
//
protected override void OnModelCreating(DbModelBuilder modelBuilder)
modelBuilder.Configurations.Add(new ShopMate.Maping.RoleMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.UserMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.MenuMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.MenuPermissionMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.ProductCategoryMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.ProductMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.TaxMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.ProductStockMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.PaymentModeMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.SaleMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.InvoiceItemsMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.SettingMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.InvoiceFormatMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.InventoryTypeMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.PurchaseMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.TransactionMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.InvoiceMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.LedgerAccountMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.WarehouseMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.DuePaymentMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.ExpenseMap());
modelBuilder.Configurations.Add(new ShopMate.Maping.InternalRequisitionFormMap());
base.OnModelCreating(modelBuilder);
我要跟踪的表
[TrackChanges]
public class Product
[DisplayName("S.No")]
public int Id get; set;
[Required]
[StringLength(100)]
[DisplayName("Name")]
public string Name get; set;
[Required]
[DisplayName("Product Category")]
public int? ProductCategoryId get; set;
public virtual ProductCategory ProductCategory_ProductCategoryId get; set;
[StringLength(100)]
[DisplayName("Bar Code")]
public string BarCode get; set;
[Required]
[DisplayName("Purchase Price")]
public Decimal PurchasePrice get; set;
[Required]
[DisplayName("Sale Price")]
public Decimal SalePrice get; set;
[DisplayName("Product Image")]
public string ProductImage get; set;
[DisplayName("Added By")]
public Nullable<int> AddedBy get; set;
[DisplayName("Date Added")]
public Nullable<DateTime> DateAdded get; set;
[DisplayName("Modified By")]
public Nullable<int> ModifiedBy get; set;
[DisplayName("Date Modied")]
public Nullable<DateTime> DateModied get; set;
[Required]
[DisplayName("Is Active")]
public bool IsActive get; set;
[Required]
[DisplayName("Stock Alert")]
public int StockAlert get; set;
[DisplayName("Tax")]
public Nullable<int> TaxId get; set;
[Required]
[DisplayName("Warehouse")]
public int WarehouseId get; set;
[DisplayName("Discount")]
public Nullable<Decimal> Discount get; set;
[DisplayName("Remaining Quantity")]
public Nullable<Decimal> RemainingQuantity get; set;
[DisplayName("Remaining Amount")]
public Nullable<Decimal> RemainingAmount get; set;
[StringLength(100)]
[DisplayName("HSN")]
public string HSN get; set;
public virtual ICollection<ProductStock> ProductStock_ProductIds get; set;
public virtual ICollection<Sale> Sale_ProductIds get; set;
public virtual ICollection<InvoiceItems> InvoiceItems_ProductIds get; set;
public virtual ICollection<Purchase> Purchase_ProductIds get; set;
控制器功能
[HttpPost]
[ValidateAntiForgeryToken]
[ValidateInput(false)]
public ActionResult Edit(Product ObjProduct, HttpPostedFileBase ProductImage, string HideImage1)
System.Text.StringBuilder sb = new System.Text.StringBuilder();
int userId = Convert.ToInt32(Env.GetUserInfo("userid"));
try
if (ModelState.IsValid)
if (ProductImage != null)
var fileName = MicrosoftHelper.MSHelper.StarkFileUploaderCSharp(ProductImage, Server.MapPath("~/Uploads"));
ModelState.Clear();
ObjProduct.ProductImage = fileName;
else
ObjProduct.ProductImage = HideImage1;
db.Entry(ObjProduct).State = EntityState.Modified;
db.SaveChanges(userId);
sb.Append("Sumitted");
return Content(sb.ToString());
else
foreach (var key in this.ViewData.ModelState.Keys)
foreach (var err in this.ViewData.ModelState[key].Errors)
sb.Append(err.ErrorMessage + "<br/>");
catch (Exception ex)
sb.Append("Error :" + ex.Message);
return Content(sb.ToString());
我希望它将更改保存到数据库、audidlog 和 auditlogdetails 表中。
【问题讨论】：
【参考方案1】：当您使用附加实体到 DBContext 时，您需要在应用程序启动时添加 GlobalTrackingConfig.DisconnectedContext = true;。
Here is documentation
【讨论】：
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