Javascript 找不到成员。（HRESULT的异常：0x80020003（DISP_E_MEMBERNOTFOUND））

我正在使用WatiN实现IE自动化。我想自动化雅虎搜索（只是为了测试）。当我在启动IE后立即运行

WatiN.Core.Document.Eval（“js代码”）

时，它可以工作，我可以在页面上运行javascript。然而，当我在Yahoo中进行一些搜索，然后调用

WatiN.Core.Document.Eval（“jscode”）

，它会抛出COMException DISP_E_MEMBERNOTFOUND。下面是发生异常的方法（WatiN.Core.Native.InternetExplorer.Expando.cs）

例外情况详情：

Member not found. (Exception from HRESULT: 0x80020003 (DISP_E_MEMBERNOTFOUND))

堆栈跟踪：

at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
   at System.Runtime.InteropServices.Marshal.ThrowExceptionForHR(Int32 errorCode)
   at System.Runtime.InteropServices.CustomMarshalers.ExpandoViewOfDispatchEx.DispExInvoke(String pstrMemberName, Int32 MemberDispID, Int32 Flags, Binder pBinder, Object[] aArgs, ParameterModifier[] aModifiers, CultureInfo pCultureInfo, String[] astrNamedParameters)
   at System.Runtime.InteropServices.CustomMarshalers.DispatchExMethodInfo.Invoke(Object pObj, BindingFlags invokeAttr, Binder pBinder, Object[] aParameters, CultureInfo pCulture)
   at System.Runtime.InteropServices.CustomMarshalers.DispatchExPropertyInfo.GetValue(Object pObj, BindingFlags invokeAttr, Binder binder, Object[] aIndex, CultureInfo culture)
   at System.Reflection.PropertyInfo.GetValue(Object obj, Object[] index)
   at WatiN.Core.Native.InternetExplorer.Expando.GetValue(String propertyName) in d:\AdvancedSE\Releases\SE-Dev Rel 8.3.0.0\Source\CommonPlugins\Source\CommonPlugins\SE.Core.IEAutomation\WatiN\Core\Native\InternetExplorer\Expando.cs:line 48

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请帮忙

您是否尝试在DOM完全加载后评估脚本？是的，但没有帮助。还有其他想法吗？在加载页面和运行代码之前，您是否遇到任何类型的错误？（使用Chrome中的CTRL+SHIFT+I或IE中的F12进行检查）唉！没有运行时JS错误。

at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
   at System.Runtime.InteropServices.Marshal.ThrowExceptionForHR(Int32 errorCode)
   at System.Runtime.InteropServices.CustomMarshalers.ExpandoViewOfDispatchEx.DispExInvoke(String pstrMemberName, Int32 MemberDispID, Int32 Flags, Binder pBinder, Object[] aArgs, ParameterModifier[] aModifiers, CultureInfo pCultureInfo, String[] astrNamedParameters)
   at System.Runtime.InteropServices.CustomMarshalers.DispatchExMethodInfo.Invoke(Object pObj, BindingFlags invokeAttr, Binder pBinder, Object[] aParameters, CultureInfo pCulture)
   at System.Runtime.InteropServices.CustomMarshalers.DispatchExPropertyInfo.GetValue(Object pObj, BindingFlags invokeAttr, Binder binder, Object[] aIndex, CultureInfo culture)
   at System.Reflection.PropertyInfo.GetValue(Object obj, Object[] index)
   at WatiN.Core.Native.InternetExplorer.Expando.GetValue(String propertyName) in d:\AdvancedSE\Releases\SE-Dev Rel 8.3.0.0\Source\CommonPlugins\Source\CommonPlugins\SE.Core.IEAutomation\WatiN\Core\Native\InternetExplorer\Expando.cs:line 48