Exception:Unable to cast COM object of type 'System.__ComObject' to interface type 'SHDocVw.InternetExplorer'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{D30C1661-CDAF-11D0-8A3E-00C04FC9E26E}' failed due to the following error: 不支持此接口 (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).