List（Of T）声明和.add的奇怪问题

我的代码（.Net Framework 3.5）中有这个非常奇怪的问题 . 所以，在一个普通的VB.NET程序中，我会做这样的事情：

Dim MyList As New List(Of Integer) 

MyList.Add(3)

MyList.Add(5)

MyList.Add(9)

MyList.Add(17)

如果我之后放了一个“休息”的话

Dim MyList As New List(Of Integer)

在代码暂停时将鼠标放在“MyList”上，我应该得到：Count = 0 . 但是，我有一个sub，我在那里创建一个列表并得到（当我在它之后打破）：“Count =属性评估失败” .

好像我的列表没有足够的空间容纳数据......这是我用来尝试所有内容的完整代码（顺便说一下，代码本身并没有真正意义，因为它是我项目的一部分） . 有了它，我可以创造“怪异”的行为，任何人都可以测试这个 . 这是代码（抱歉代码块按钮不起作用）：

Structure lPossibilitiesOutputStruct 

     Dim Pinion As GearOutputStruct

     Dim Gear As GearOutputStruct

     Dim Forces As ForcesStruct

     Dim CenterDistance As Double

     Dim Pitch As Double

     Dim lStagePossibilities As List(Of lPossibilitiesOutputStruct)

End Structure

Structure GearOutputStruct

     Dim TeethNbr As Integer

     Dim RPM As Double

     Dim FaceWidth As Double

     Dim OutsideDiameter As Double

     Dim Addendum As Double

     Dim WholeDepth As Double

     Dim OperatingPitchDiameter As Double

     Dim OverPinData As OverPinOutputStruct

     Dim SpanData As SpanOutputStruct

     Dim AllowableBendingPower As Double

     Dim AllowablePittingPower As Double

End Structure

Structure OverPinOutputStruct

     Dim PinDiameter As Double

     Dim OverpinMeasurement As Double

End Structure

Structure SpanOutputStruct

     Dim TeethNbr As Integer

     Dim SpanMeasurement As Double

End Structure

Structure ForcesStruct

     Dim GearSetAxialForce As Double

     Dim GearSetRadialForce As Double

     Dim GearSetTangentialForce As Double

End Structure

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

     Dim lStagePossibilities As New List(Of lPossibilitiesOutputStruct)

     Dim MyList As New List(Of Integer)

     MyList.Add(3)

     MyList.Add(5)

     MyList.Add(9)

     MyList.Add(17)

     lStagePossibilities = lGeneratePossibilities(Nothing, Nothing, 3, 1)

End Sub

Private Function lGeneratePossibilities(ByVal ActualStage As lPossibilitiesOutputStruct, ByVal CSL As List(Of Integer), ByVal MaxStage As Integer, ByVal CumulatedRatio As Double) As List(Of lPossibilitiesOutputStruct)

     Return Nothing

End Function

我所做的只是创建一个带有表单的新项目并创建该代码 . 项目中没有别的东西 . 我玩“目标CPU”，这就是全部......

如果我使用编译选项运行该程序以使用x86 CPU，并在“lStagePossibilities = ...”上暂停，当我将鼠标放在MyList上时，我得到“Count =属性评估失败” . 如果我用x64 CPU运行它，那么一切正常......（“Count = 4”） . 如果我回到x86 CPU，我会收回错误 . 更糟糕的是，如果我在lPossibilitiesOutPutStruct结构声明中注释“Dim Pinion as GearOutputStruct”或“Dim Gear as GearOutputStruct”或“Dim Forces as ForcesStruct”这一行，那么x86 CPU的一切正常......

它可能与列表的最大大小有关吗???

谢谢 ！

吉恩