如何在C#或VB.Net Winform应用程序中的javascript警报/确认框上获得用户操作，如“确定”或“取消”

我在Vb.Net WinForms应用程序中使用SHDocVw.InternetExplorer API来记录应用程序中Internet Explorer的用户操作。

通过使用"user32.dll"的"GetForegroundWindow"，我可以获得确认框的句柄。我可以很容易地获得所需的信息，如"ClassName"answers"WindowText"。

现在我需要知道关闭确认框的用户操作，即用户按下"确定"或"取消"按钮？

这是我使用的示例代码

Private Function GetAlertMessage() As String
    Dim hwnd = GetForegroundWindow
    Dim ForeGroundWindowClassName As String = GetClassNameFromHandle(hwnd)
    If String.CompareOrdinal("#32770", ForeGroundWindowClassName) = 0 Then
        'Its definitely an alert
        Dim AlertMessage As String = String.Empty
        For Each childWin As WindowChildInfo In GetChildWindows(hwnd)
            If childWin.ClassName.ToLower = "static" Then
                AlertMessage = childWin.Text
            End If
        Next
        Return AlertMessage
    End If
End Function
Public Function GetClassNameFromHandle(ByVal hWnd As Integer) As String
    Dim sbClassName As New Text.StringBuilder("", 256)
    Call GetClassName(hWnd, sbClassName, 256)
    Return sbClassName.ToString
End Function
Private children As List(Of WindowChildInfo)
Public Function GetChildWindows(ByVal hwnd As Integer) As List(Of WindowChildInfo)
    children = New List(Of WindowChildInfo)
    EnumChildWindows(hwnd, AddressOf EnumProc, Nothing)
    Return children
End Function
Private Function EnumProc(ByVal hwnd As Integer, ByVal lParam As Integer) As Integer
    If hwnd <> 0 Then
        children.Add(New WindowChildInfo(hwnd, GetClassNameFromHandle(hwnd), GetText(hwnd)))
    End If
    Return 1
End Function

var action= confirm("your message here");