VB.net匿名类型具有来自AJAX调用的不正确的属性外壳

我们注意到,有时从 AJAX调用结果到控制器操作,JSON结果的情况是不正确的.如果我们重建我们的解决方案并尝试完全相同的调用,则返回的案例实际上会发生变化在下面的例子中,密钥的情况已经纠正了一年多,直到现在它已经决定根据一些看似随意的情况开始随机改变.

正如您在上图中所看到的,JSON结果的关键是小写“成功”.但是,当我在Chrome控制台中查看结果时,它是一个大写的“成功”.这导致我们的JavaScript失败,因为它正在检查小写版本.

是什么造成的？更重要的是,我们如何阻止这种情况？

vb.net不区分大小写,而不区分大小写的C#.这意味着编译器将为以下每个匿名类型生成一个类(来自第一个实例)：

Dim a = New With {.success = True} 'Compiler generate a class based on this type
Dim b = New With {.Success = True} 'Same type as `a`
Dim c = New With {.sUcCeSs = True} 'Same type as `a`

Debug.WriteLine(a.GetType().Name)
Debug.WriteLine(b.GetType().Name)
Debug.WriteLine(c.GetType().Name)

VB$AnonymousType_0’1
VB$AnonymousType_0’1
VB$AnonymousType_0’1

以下是编译回vb.net时编译代码的样子：

<Debuggerdisplay("success={success}"),CompilerGenerated> _
Friend notinheritable Class VB$AnonymousType_0(Of T0)
    ' Methods
    <DebuggerNonUserCode> _
    Public Sub New(ByVal success As T0)
        Me.$success = success
    End Sub

    <DebuggerNonUserCode> _
    Public Overrides Function ToString() As String
        Dim builder As New StringBuilder
        builder.Append("{ ")
        builder.AppendFormat("{0} = {1} ","success",Me.$success)
        builder.Append("}")
        Return builder.ToString
    End Function

    Public Property success As T0
        <DebuggerNonUserCode> _
        Get
            Return Me.$success
        End Get
        <DebuggerNonUserCode> _
        Set(ByVal Value As T0)
            Me.$success = Value
        End Set
    End Property

    Private $success As T0

End Class

原文地址：https://www.jb51.cc/vb/255283.html