Question

在edmBuilder.EntitySet<Contact>("Contacts"); edmBuilder.EntityType<ContactDto>();中，我有两种方法（一种显示全部，另一种删除供应商）

VendorControllder

// to display all vendor public ActionResult Index() { SLMEntitiesDB dbContext = new SLMEntitiesDB(); List<Vendor> Vlist = dbContext.Vendors.ToList(); return View(Vlist); } // to delete vendor public ActionResult delv(Vendor VID) //this return null { SLMEntitiesDB dbContext = new SLMEntitiesDB(); dbContext.DelV(VID.VID); return RedirectToAction("Index"); }是如下过程

DelV

来自供应商索引，我有两个如下的HTML Action链接

create procedure [dbo].[DelV]
(@VID int)
as
begin
Delete from vendor where VID=@VID
end

当我运行应用程序时，@Html.ActionLink("Delete", "delv", new { VID = item.VID },null)返回null

Answer 1

您似乎未正确设置ActionLink。改变这个

@Html.ActionLink("Delete", "delv", new { VID = item.VID },null)

对此

@Html.ActionLink("Delete", "delv", "Vendor", new { VID = item.VID },null)

记住设置为HTML.ActionLink是：链接文本，操作名称，控制器名称，路由值，HTML值

动作方法返回null

1 个答案: