vb.net - La página web funciona en IE, Chrome y Firefox, pero no cuando se usa el control.NET WebBrowser

visual-studio-2010 visual-studio-2012

Question

Estoy usando el control WebBrowser en Visual Studio 2010 e intento mostrar la página: http://lk21.org .

Dentro de esa página web hay muchos scripts cargados, y funciona bien si lo abro a través de un navegador web como Firefox, Chrome y la última versión de IE.

Mi pregunta es, ¿por qué muestra "Solicitud incorrecta" cuando intenté usar el componente WebBrowser para navegar a esa página?

Mira esto:

ACTUALIZAR:

La página se carga muy bien con la respuesta de Visual Vincent.

Sin embargo, los videos flash en el sitio web (o creo que es algo similar a flash) no se pueden reproducir. Vea la comparación en las imágenes a continuación.

Lo extraño es que si abro YouTube, el flash funciona bien. Después de un poco de investigación, parece ser causado por algo más. ¿Alguna idea de cómo resolverlo?

Internet Explorer: funciona bien:

Control de WebBrowser: por alguna razón, el video está bloqueado y no se puede reproducir:

Answer 1

Basado en la respuesta de @ Visual Vincent , aquí hice una solución modificada:

1 - Enumeración IEBrowserEmulationMode :

'''''' ----------------------------------------------------------------------------------------------------
'''''' <summary>
'''''' Specifies a Internet Explorer browser emulation mode.
'''''' </summary>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <remarks>
'''''' <see href="https://docs.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/general-info/ee330730(v=vs.85)"/>
'''''' </remarks>
'''''' ----------------------------------------------------------------------------------------------------
Public Enum IEBrowserEmulationMode As Integer

    '''''' <summary>
    '''''' Webpages containing standards-based !DOCTYPE directives are displayed in IE7 Standards mode.
    '''''' </summary>
    IE7 = 7000

    '''''' <summary>
    '''''' Webpages containing standards-based !DOCTYPE directives are displayed in IE8 mode. 
    '''''' </summary>
    IE8 = 8000

    '''''' <summary>
    '''''' Webpages are displayed in IE8 Standards mode, regardless of the declared !DOCTYPE directive. 
    '''''' <para></para>
    '''''' Failing to declare a !DOCTYPE directive causes the page to load in Quirks.
    '''''' </summary>
    IE8Standards = 8888

    '''''' <summary>
    '''''' Webpages containing standards-based !DOCTYPE directives are displayed in IE9 mode.
    '''''' </summary>
    IE9 = 9000

    '''''' <summary>
    '''''' Webpages are displayed in IE9 Standards mode, regardless of the declared !DOCTYPE directive. 
    '''''' <para></para>
    '''''' Failing to declare a !DOCTYPE directive causes the page to load in Quirks.
    '''''' </summary>
    IE9Standards = 9999

    '''''' <summary>
    '''''' Webpages containing standards-based !DOCTYPE directives are displayed in IE10 Standards mode.
    '''''' </summary>
    IE10 = 10000

    '''''' <summary>
    '''''' Webpages are displayed in IE10 Standards mode, regardless of the !DOCTYPE directive.
    '''''' </summary>
    IE10Standards = 10001

    '''''' <summary>
    '''''' Webpages containing standards-based !DOCTYPE directives are displayed in IE11 edge mode.
    '''''' </summary>
    IE11 = 11000

    '''''' <summary>
    '''''' Webpages are displayed in IE11 edge mode, regardless of the declared !DOCTYPE directive. 
    '''''' <para></para>
    '''''' Failing to declare a !DOCTYPE directive causes the page to load in Quirks.
    '''''' </summary>
    IE11Edge = 11001

End Enum

2 - Enumeración RegistryScope .

'''''' ----------------------------------------------------------------------------------------------------
'''''' <summary>
'''''' Specifies a registry scope (a root key).
'''''' </summary>
'''''' ----------------------------------------------------------------------------------------------------
Public Enum RegistryScope As Integer

    '''''' <summary>
    '''''' This refers to the HKEY_LOCAL_MACHINE (or HKLM) registry root key.
    '''''' <para></para>
    '''''' Configuration changes made on the subkeys of this root key will affect all users.
    '''''' </summary>
    Machine = 0

    '''''' <summary>
    '''''' This refers to the HKEY_CURRENT_USER (or HKCU) registry root key.
    '''''' <para></para>
    '''''' Configuration changes made on the subkeys of this root key will affect only the current user.
    '''''' </summary>
    CurrentUser = 1

End Enum

3 - Propiedad BrowserEmulationMode , para obtener o establecer el modo de emulación de navegador IE para la aplicación actual.

'''''' ----------------------------------------------------------------------------------------------------
'''''' <summary>
'''''' Gets or sets the Internet Explorer browser emulation mode for the current application.
'''''' </summary>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <seealso href="https://docs.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/general-info/ee330730(v=vs.85)"/>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <example> This is a code example to get, set and verify the IE browser emulation mode for the current process.
'''''' <code>
'''''' Dim scope As RegistryScope = RegistryScope.CurrentUser
'''''' Dim oldMode As IEBrowserEmulationMode
'''''' Dim newMode As IEBrowserEmulationMode
'''''' 
'''''' oldMode = BrowserEmulationMode(scope)
'''''' BrowserEmulationMode(scope) = IEBrowserEmulationMode.IE11Edge
'''''' newMode = BrowserEmulationMode(scope)
'''''' 
'''''' Console.WriteLine(String.Format("Old Mode: {0} ({1})", oldMode, CStr(oldMode)))
'''''' Console.WriteLine(String.Format("New Mode: {0} ({1})", newMode, CStr(newMode)))
'''''' 
'''''' Dim f As New Form() With {.Size = New Size(1280, 720)}
'''''' Dim wb As New WebBrowser With {.Dock = DockStyle.Fill}
'''''' f.Controls.Add(wb)
'''''' f.Show()
'''''' wb.Navigate("http://www.whatversion.net/browser/")
'''''' </code>
'''''' </example>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <param name="scope">
'''''' The registry scope.
'''''' </param>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <value>
'''''' The Internet Explorer browser emulation mode.
'''''' </value>
'''''' ----------------------------------------------------------------------------------------------------
Public Shared Property BrowserEmulationMode(ByVal scope As RegistryScope) As IEBrowserEmulationMode
    <DebuggerStepThrough>
    Get
        Return GetIEBrowserEmulationMode(Process.GetCurrentProcess().ProcessName, scope)
    End Get
    <DebuggerStepThrough>
    Set(value As IEBrowserEmulationMode)
        SetIEBrowserEmulationMode(Process.GetCurrentProcess().ProcessName, scope, value)
    End Set
End Property

3 - Función GetIEBrowserEmulationMode y método SetIEBrowserEmulationMode , para obtener o establecer el modo de emulación del navegador IE para una aplicación externa.

'''''' ----------------------------------------------------------------------------------------------------
'''''' <summary>
'''''' Gets the Internet Explorer browser emulation mode for the specified process.
'''''' </summary>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <seealso href="https://docs.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/general-info/ee330730(v=vs.85)"/>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <example> This is a code example.
'''''' <code>
'''''' Dim processName As String = Process.GetCurrentProcess().ProcessName
'''''' Dim scope As RegistryScope = RegistryScope.CurrentUser
'''''' Dim mode As IEBrowserEmulationMode = GetIEBrowserEmulationMode(processName, scope)
'''''' 
'''''' Console.WriteLine(String.Format("Mode: {0} ({1})", mode, CStr(mode)))
'''''' </code>
'''''' </example>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <param name="processName">
'''''' The process name (eg. ''cmd.exe'').
'''''' </param>
'''''' 
'''''' <param name="scope">
'''''' The registry scope.
'''''' </param>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <returns>
'''''' The resulting <see cref="IEBrowserEmulationMode"/>.
'''''' </returns>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <exception cref="NotSupportedException">
'''''' </exception>
'''''' ----------------------------------------------------------------------------------------------------
<DebuggerStepThrough>
Public Shared Function GetIEBrowserEmulationMode(ByVal processName As String, ByVal scope As RegistryScope) As IEBrowserEmulationMode

    processName = Path.GetFileNameWithoutExtension(processName)

    Using rootKey As RegistryKey = If(scope = RegistryScope.CurrentUser,
                                      RegistryKey.OpenBaseKey(RegistryHive.CurrentUser, RegistryView.Default),
                                      RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Default)),
          subKey As RegistryKey = rootKey.CreateSubKey("Software/Microsoft/Internet Explorer/MAIN/FeatureControl/FEATURE_BROWSER_EMULATION",
                                                       RegistryKeyPermissionCheck.ReadSubTree)

        Dim value As Integer =
            CInt(subKey.GetValue(String.Format("{0}.exe", processName), 0, RegistryValueOptions.None))

        '' If no browser emulation mode is retrieved from registry, then return default version for WebBrowser control.
        If (value = 0) Then
            Return IEBrowserEmulationMode.IE7
        End If

        If [Enum].IsDefined(GetType(IEBrowserEmulationMode), value) Then
            Return DirectCast(value, IEBrowserEmulationMode)

        Else
            Throw New NotSupportedException(String.Format("Undefined browser emulation value retrieved from registry: ''{0}''", value))


        End If

    End Using

End Function

'''''' ----------------------------------------------------------------------------------------------------
'''''' <summary>
'''''' Gets the Internet Explorer browser emulation mode for the specified process.
'''''' </summary>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <seealso href="https://docs.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/general-info/ee330730(v=vs.85)"/>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <example> This is a code example.
'''''' <code>
'''''' Dim p As Process = Process.GetCurrentProcess()
'''''' Dim scope As RegistryScope = RegistryScope.CurrentUser
'''''' Dim mode As IEBrowserEmulationMode = GetIEBrowserEmulationMode(p, scope)
'''''' 
'''''' Console.WriteLine(String.Format("Mode: {0} ({1})", mode, CStr(mode)))
'''''' </code>
'''''' </example>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <param name="p">
'''''' The process.
'''''' </param>
'''''' 
'''''' <param name="scope">
'''''' The registry scope.
'''''' </param>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <returns>
'''''' The resulting <see cref="IEBrowserEmulationMode"/>.
'''''' </returns>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <exception cref="NotSupportedException">
'''''' </exception>
'''''' ----------------------------------------------------------------------------------------------------
<DebuggerStepThrough>
Public Shared Function GetIEBrowserEmulationMode(ByVal p As Process, ByVal scope As RegistryScope) As IEBrowserEmulationMode

    Return GetIEBrowserEmulationMode(p.ProcessName, scope)

End Function

'''''' ----------------------------------------------------------------------------------------------------
'''''' <summary>
'''''' Sets the Internet Explorer browser emulation mode for the specified process.
'''''' </summary>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <seealso href="https://docs.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/general-info/ee330730(v=vs.85)"/>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <example> This is a code example.
'''''' <code>
'''''' Dim processName As String = Process.GetCurrentProcess().ProcessName
'''''' Dim scope As RegistryScope = RegistryScope.CurrentUser
'''''' Dim oldMode As IEBrowserEmulationMode
'''''' Dim newMode As IEBrowserEmulationMode
'''''' 
'''''' oldMode = GetIEBrowserEmulationMode(processName, scope)
'''''' SetIEBrowserEmulationMode(processName, scope, IEBrowserEmulationMode.IE11Edge)
'''''' newMode = GetIEBrowserEmulationMode(processName, scope)
'''''' 
'''''' Console.WriteLine(String.Format("Old Mode: {0} ({1})", oldMode, CStr(oldMode)))
'''''' Console.WriteLine(String.Format("New Mode: {0} ({1})", newMode, CStr(newMode)))
'''''' 
'''''' Dim f As New Form() With {.Size = New Size(1280, 720)}
'''''' Dim wb As New WebBrowser With {.Dock = DockStyle.Fill}
'''''' f.Controls.Add(wb)
'''''' f.Show()
'''''' wb.Navigate("http://www.whatversion.net/browser/")
'''''' </code>
'''''' </example>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <param name="processName">
'''''' The process name (eg. ''cmd.exe'').
'''''' </param>
'''''' 
'''''' <param name="scope">
'''''' The registry scope.
'''''' </param>
'''''' 
'''''' <param name="mode">
'''''' The Internet Explorer browser emulation mode to set.
'''''' </param>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <exception cref="NotSupportedException">
'''''' </exception>
'''''' ----------------------------------------------------------------------------------------------------
<DebuggerStepThrough>
Public Shared Sub SetIEBrowserEmulationMode(ByVal processName As String, ByVal scope As RegistryScope, ByVal mode As IEBrowserEmulationMode)

    processName = Path.GetFileNameWithoutExtension(processName)

    Dim currentIEBrowserEmulationMode As IEBrowserEmulationMode = GetIEBrowserEmulationMode(processName, scope)
    If (currentIEBrowserEmulationMode = mode) Then
        Exit Sub
    End If

    Using rootKey As RegistryKey = If(scope = RegistryScope.CurrentUser,
                                      RegistryKey.OpenBaseKey(RegistryHive.CurrentUser, RegistryView.Default),
                                      RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Default)),
          subKey As RegistryKey = rootKey.CreateSubKey(
                    "Software/Microsoft/Internet Explorer/MAIN/FeatureControl/FEATURE_BROWSER_EMULATION",
                    RegistryKeyPermissionCheck.ReadWriteSubTree)

        subKey.SetValue(String.Format("{0}.exe", processName),
                        DirectCast(mode, Integer), RegistryValueKind.DWord)

    End Using

End Sub

'''''' ----------------------------------------------------------------------------------------------------
'''''' <summary>
'''''' Sets the Internet Explorer browser emulation mode for the specified process.
'''''' </summary>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <seealso href="https://docs.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/general-info/ee330730(v=vs.85)"/>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <example> This is a code example.
'''''' <code>
'''''' Dim processName As Process = Process.GetCurrentProcess()
'''''' Dim scope As RegistryScope = RegistryScope.CurrentUser
'''''' Dim oldMode As IEBrowserEmulationMode
'''''' Dim newMode As IEBrowserEmulationMode
'''''' 
'''''' oldMode = GetIEBrowserEmulationMode(p, scope)
'''''' SetIEBrowserEmulationMode(p, scope, IEBrowserEmulationMode.IE11Edge)
'''''' newMode = GetIEBrowserEmulationMode(p, scope)
'''''' 
'''''' Console.WriteLine(String.Format("Old Mode: {0} ({1})", oldMode, CStr(oldMode)))
'''''' Console.WriteLine(String.Format("New Mode: {0} ({1})", newMode, CStr(newMode)))
'''''' 
'''''' Dim f As New Form() With {.Size = New Size(1280, 720)}
'''''' Dim wb As New WebBrowser With {.Dock = DockStyle.Fill}
'''''' f.Controls.Add(wb)
'''''' f.Show()
'''''' wb.Navigate("http://www.whatversion.net/browser/")
'''''' </code>
'''''' </example>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <param name="p">
'''''' The process.
'''''' </param>
'''''' 
'''''' <param name="scope">
'''''' The registry scope.
'''''' </param>
'''''' 
'''''' <param name="mode">
'''''' The Internet Explorer browser emulation mode to set.
'''''' </param>
'''''' ----------------------------------------------------------------------------------------------------
'''''' <exception cref="NotSupportedException">
'''''' </exception>
'''''' ----------------------------------------------------------------------------------------------------
<DebuggerStepThrough>
Public Shared Sub SetIEBrowserEmulationMode(ByVal p As Process, ByVal scope As RegistryScope, ByVal mode As IEBrowserEmulationMode)

    SetIEBrowserEmulationMode(p.ProcessName, scope, mode)

End Sub

Ejemplo de uso para obtener, establecer y verificar el modo de emulación del navegador IE para el proceso actual:

Dim scope As RegistryScope = RegistryScope.CurrentUser
Dim oldMode As IEBrowserEmulationMode
Dim newMode As IEBrowserEmulationMode

oldMode = BrowserEmulationMode(scope)
BrowserEmulationMode(scope) = IEBrowserEmulationMode.IE11Edge
newMode = BrowserEmulationMode(scope)

Console.WriteLine(String.Format("Old Mode: {0} ({1})", oldMode, CStr(oldMode)))
Console.WriteLine(String.Format("New Mode: {0} ({1})", newMode, CStr(newMode)))

Dim f As New Form() With {.Size = New Size(1280, 720)}
Dim wb As New WebBrowser With {.Dock = DockStyle.Fill}
f.Controls.Add(wb)
f.Show()
wb.Navigate("http://www.whatversion.net/browser/")

Ejemplo de uso para obtener, establecer y verificar el modo de emulación del navegador IE para un proceso específico:

Dim processName As String = Process.GetCurrentProcess().ProcessName
Dim scope As RegistryScope = RegistryScope.CurrentUser
Dim oldMode As IEBrowserEmulationMode
Dim newMode As IEBrowserEmulationMode

oldMode = GetIEBrowserEmulationMode(processName, scope)
SetIEBrowserEmulationMode(processName, scope, IEBrowserEmulationMode.IE11Edge)
newMode = GetIEBrowserEmulationMode(processName, scope)

Console.WriteLine(String.Format("Old Mode: {0} ({1})", oldMode, CStr(oldMode)))
Console.WriteLine(String.Format("New Mode: {0} ({1})", newMode, CStr(newMode)))

Dim f As New Form() With {.Size = New Size(1280, 720)}
Dim wb As New WebBrowser With {.Dock = DockStyle.Fill}
f.Controls.Add(wb)
f.Show()
wb.Navigate("http://www.whatversion.net/browser/")

Answer 2

Probablemente tiene que ver con que el control WebBrowser utiliza de manera predeterminada un modo de emulación de documentos de IE 7, lo que significa que todas las páginas se manejan con el motor de Internet Explorer 7. Dado que esa versión es bastante antigua, la mayoría de los sitios web de hoy no son compatibles con ella, lo que afecta la funcionalidad cuando visita la página.

Puede cambiar este comportamiento agregando un valor para su aplicación en la clave de registro Software/Microsoft/Internet Explorer/MAIN/FeatureControl/FEATURE_BROWSER_EMULATION en la sección HKEY_LOCAL_MACHINE o HKEY_CURRENT_USER . Al hacerlo, está obligando a su aplicación a usar una versión específica del motor IE.

He escrito una clase que te ayudará con esto:

''A class for changing the WebBrowser control''s document emulation.
''Written by Visual Vincent, 2017.

Imports Microsoft.Win32
Imports System.Security
Imports System.Windows.Forms

Public NotInheritable Class InternetExplorer
    Private Sub New()
    End Sub

    Public Const InternetExplorerRootKey As String = "Software/Microsoft/Internet Explorer"
    Public Const BrowserEmulationKey As String = InternetExplorerRootKey & "/MAIN/FeatureControl/FEATURE_BROWSER_EMULATION"
    Public Const ActiveXObjectCachingKey As String = InternetExplorerRootKey & "/MAIN/FeatureControl/FEATURE_OBJECT_CACHING"

    Private Shared ReadOnly WebBrowserInstance As New WebBrowser ''Used to get the current IE version in a .NET-friendly manner.

    Public Enum BrowserEmulation As Integer
        IE7 = 7000
        IE8 = 8000
        IE8Standards = 8888
        IE9 = 9000
        IE9Standards = 9999
        IE10 = 10000
        IE10Standards = 10001
        IE11 = 11000
        IE11Edge = 11001
    End Enum

    Public Shared Sub SetLatestBrowserEmulation(ByVal Root As RegistryRoot)
        Dim Emulation As BrowserEmulation = BrowserEmulation.IE7
        Select Case WebBrowserInstance.Version.Major
            Case Is >= 11 : Emulation = BrowserEmulation.IE11Edge
            Case 10 : Emulation = BrowserEmulation.IE10Standards
            Case 9 : Emulation = BrowserEmulation.IE9Standards
            Case 8 : Emulation = BrowserEmulation.IE8Standards
        End Select
        InternetExplorer.SetBrowserEmulation(Root, Emulation)
    End Sub

    Public Shared Sub SetBrowserEmulation(ByVal Root As RegistryRoot, ByVal Emulation As BrowserEmulation)
        Using RootKey As RegistryKey = Root.Root
            Dim EmulationKey As RegistryKey = RootKey.OpenSubKey(BrowserEmulationKey, True)
            If EmulationKey Is Nothing Then EmulationKey = RootKey.CreateSubKey(BrowserEmulationKey, RegistryKeyPermissionCheck.ReadWriteSubTree)

            Using EmulationKey
                EmulationKey.SetValue(Process.GetCurrentProcess().ProcessName & ".exe", CType(Emulation, Integer), RegistryValueKind.DWord)
            End Using
        End Using
    End Sub

    Public Shared Sub SetActiveXObjectCaching(ByVal Root As RegistryRoot, ByVal Enabled As Boolean)
        Using RootKey As RegistryKey = Root.Root
            Dim ObjectCachingKey As RegistryKey = RootKey.OpenSubKey(ActiveXObjectCachingKey, True)
            If ObjectCachingKey Is Nothing Then ObjectCachingKey = RootKey.CreateSubKey(ActiveXObjectCachingKey, RegistryKeyPermissionCheck.ReadWriteSubTree)

            Using ObjectCachingKey
                ObjectCachingKey.SetValue(Process.GetCurrentProcess().ProcessName & ".exe", CType(If(Enabled, 1, 0), Integer), RegistryValueKind.DWord)
            End Using
        End Using
    End Sub

    Public NotInheritable Class RegistryRoot
        Private _root As RegistryKey

        Public ReadOnly Property Root As RegistryKey
            Get
                Return _root
            End Get
        End Property

        Public Shared ReadOnly Property HKEY_LOCAL_MACHINE As RegistryRoot
            Get
                Return New RegistryRoot(Registry.LocalMachine)
            End Get
        End Property

        Public Shared ReadOnly Property HKEY_CURRENT_USER As RegistryRoot
            Get
                Return New RegistryRoot(Registry.CurrentUser)
            End Get
        End Property

        Private Sub New(ByVal Root As RegistryKey)
            Me._root = Root
        End Sub
    End Class
End Class

Para usarlo, coloque una de estas líneas en el evento de Startup la aplicación:

InternetExplorer.SetLatestBrowserEmulation(InternetExplorer.RegistryRoot.HKEY_LOCAL_MACHINE)

''HKEY_CURRENT_USER is recommended if you do not want to run your application with administrative privileges.
InternetExplorer.SetLatestBrowserEmulation(InternetExplorer.RegistryRoot.HKEY_CURRENT_USER)

( NOTA: El uso de la raíz HKEY_LOCAL_MACHINE requiere privilegios administrativos)

El método InternetExplorer.SetLatestBrowserEmulation() establecerá la emulación del navegador para su aplicación, en la raíz del registro especificada, a la última versión INSTALADA de Internet Explorer.

Sin embargo, utilizando el método InternetExplorer.SetBrowserEmulation() puede controlar manualmente qué versión de IE debe usar (¡no recomendado!) .

Lee mas:

• Controles de funciones de Internet: emulación del navegador

• Application.Startup evento de Application.Startup

• Cómo: manejar eventos de aplicación (Visual Basic)

EDITAR

Parece que no puedo ingresar a ese sitio, pero por lo que he leído , ha habido problemas con Flash alojado en el control WebBrowser .

Lo que puede intentar es deshabilitar la función ActiveX Object Caching , que aparentemente puede causar algunos problemas para los controles Flash.

Actualicé la clase de InternetExplorer anterior. Copie y pegue, luego agregue esta línea al evento de inicio de su aplicación:

InternetExplorer.SetActiveXObjectCaching(InternetExplorer.RegistryRoot.HKEY_CURRENT_USER, False)

Si todavía no funciona, me temo que no tienes suerte. No he podido encontrar nada más que sea útil.