Question

请原谅我，因为我正在学习MVC3。

我有2个数据库表，一个用于比赛，一个用于答案。对于每个比赛，将有3个与之相关的答案。

我的创建视图是我的竞赛模型的强类型。我想要做的是向该视图添加3个未绑定的输入框并在控制器中检索结果

我的控制器看起来像这样

Function Create(competition As Competition) As ActionResult
  If ModelState.IsValid Then
    db.Competitions.AddObject(competition)
    db.SaveChanges()
    Return RedirectToAction("Index")
  End If
  ViewBag.ClientID = New SelectList(db.Clients, "ClientID", "ClientName", competition.ClientID)
  Return View(competition)
End Function

我想做的是这样的事情

Function Create(competition As Competition) As ActionResult
  If ModelState.IsValid Then
    'DIM ANSWERA AS STRING = INPUTA
    'DIM ANSWERB AS STRING = INPUTB
    'DIM ANSWERC AS STRING = INPUTC

    db.Competitions.AddObject(competition)
    db.SaveChanges()
    'SAVE ANSWERS TO ANSWER TABLE

    Return RedirectToAction("Index")
  End If
  ViewBag.ClientID = New SelectList(db.Clients, "ClientID", "ClientName", competition.ClientID)
  Return View(competition)
End Function

很抱歉，如果我没有正确格式化问题。希望你能得到我想要做的事情的要点

感谢

我现在已经完成了上述工作，我希望能够在视图中编辑竞赛详情

   Function Edit(id As Integer) As ViewResult
        Dim competition As Competition = db.Competitions.Single(Function(c) c.CompetitionID = id)



       ViewBag.ClientID = New SelectList(db.Clients, "ClientID", "ClientName", competition.ClientID)
        Return View(competition)
    End Function

所以我支持视图返回我的比赛细节但是如何添加3个输入框来显示与该比赛相关的3个答案？

Answer 1

Request("NAME")将查找NAME作为表单元素，cookie，查询字符串参数或服务器变量的名称。

Dim answerA as String = Request("answerA")
Dim answerB as String = Request("answerB")
Dim answerC as String = Request("answerC")

为了安全起见，您应该使用以下方法专门定位名为“answerA”的表单元素：

Dim answerA as String = Request.Form("answerA")

但上述两个例子中的任何一个都可以使用。

Answer 2

如果控制器参数名称与输入名称匹配，MVC将为您执行绑定。所以如果你的html看起来像：

<input type="text" name="answerA" />
<input type="text" name="answerB" />
<input type="text" name="answerC" />

然后你的控制器可以简单地

Function Create(competition As Competition, answerA As string, answerB As string, answerC As string) As ActionResult

或者，您可以使用名为answers的数组，并使用answers[0]，answers[1]等名称声明输入字段...

从未绑定的输入剃刀MVC3获取价值

2 个答案: