我的表单有两个提交按钮用于两个决定。它应该是一种还是两种？

Question

我想知道我的用户选择哪个决定。

方法1

HTML

<form method="post"> 
    <input type="submit" value="Accept" name="decision" /> 
    <input type="submit" value="Decline" name="decision" /> 
</form> 

VB.NET

If Decision = "Accept" Then 
    ' Do this 
ElseIf Decision = "Decline" Then 
    ' Do that 
End If 

方法2

HTML

<form method="post"> 
    <input type="hidden" name="decision" value="true" /> 
    <input type="submit" value="Accept" /> 
</form> 

<form method="post"> 
    <input type="hidden" name="decision" value="false" /> 
    <input type="submit" value="Decline" /> 
</form> 

VB.NET

If Decision Then 
    ' Do this 
Else 
    ' Do that 
End If 

有什么真正的区别？你会去哪，为什么？

Answer 1

两个都是有效的，但我会亲自去第一个。

我这样做的原因是标记稍微干净一些。表格的目的是供用户作出决定，这些元素IMO应该组合在一起，例如称为frmDecision的表格。

第二个原因是在第二个例子中的代码是ambigious。

例如，在后面

If Decision Then 

的代码读取如果判决等于真实的，那必要不表明Accept或Decline。同时将一个参数传递回名为Decision的服务器，其值为true或false，这是一个小小的缺陷。

我发现第一个例子更清洁，虽然你可以使用资源文件，所以你不必使用魔法字符串。

Answer 2

案例＃1不可扩展。当选择的数量会增加时，将很难管理。而不是干净的行动之间的分离，这可能是有用的，当你通过AJAX调用它们。案例＃2是多余的。我更喜欢第三种方式。起初，我有名字选择属性（我从C＃转换，所以不能确定其工作正常）：

Imports System 
Imports System.Web 
Imports System.Web.Mvc 
Imports System.Reflection 

Namespace MySpace 
    <AttributeUsage(AttributeTargets.Method, AllowMultiple := False, Inherited := True)> _ 
    Public Class SubmitActionAttribute 
     Inherits System.Web.Mvc.ActionNameSelectorAttribute 
     #Region "-- Constants -----------------------------------------------------------------------" 
     Friend Const ACTION_PREFIX As String = "action:" 
     Private Const ROUTE_ACTION As String = "action" 
     #End Region 

     Private _Name As String = Nothing 
     Public ReadOnly Property Name() As String 
      Get 
       Return _Name 
      End Get 
     End Property 

     Public Overrides Function IsValidName(controllerContext As ControllerContext, actionName As String, methodInfo As MethodInfo) As Boolean 
      Dim name As String = If(_Name, methodInfo.Name) 

      Dim key As String = String.Concat(SubmitActionAttribute.ACTION_PREFIX, name) 
      Dim value As ValueProviderResult = controllerContext.Controller.ValueProvider.GetValue(key) 
      If value IsNot Nothing Then 
       controllerContext.RouteData.Values(SubmitActionAttribute.ROUTE_ACTION) = name 
       Return True 
      End If 

      Return False 
     End Function 

     Public Sub New(name As String) 
      _Name = name 
     End Sub 


     Public Sub New() 
     End Sub 
    End Class 
End Namespace 

然后我这个属性添加到控制器的动作

<SubmitAction("Accept")> _ 
    Public Function AcceptSmth() As ActionResult 

    End Function 

而在HTML中使用：

<input type="submit" value="Any value for caption" name="action:Accept" /> 

Answer 3

我会去的第一个。您提供的VB代码应该看起来更像这个

Private Sub Accept_Click(sender As Object, e As EventArgs) Handles Accept.Click 
    'do this 
End Sub 

Private Sub Decline_Click(sender As Object, e As EventArgs) Handles Decline.Click 
    'do that 
End Sub 

，或者如果有两个

Private Sub Accept_Click(sender As Object, e As EventArgs) Handles Accept.Click 
    doThisOrThat(True) 
End Sub 

Private Sub Decline_Click(sender As Object, e As EventArgs) Handles Decline.Click 
    doThisOrThat(False) 
End Sub 

Private Sub doThisOrThat(decision As Boolean) 
    If decision Then 
     'do this 
    Else 
     'do that 
    End If 
End Sub