从WPF WebBrowser中静默打印HTML

我必须在WPF中静默地从WebBrowser打印HTML文档。 我没有通过该代码默默地完成它：

mshtml.IHTMLDocument2 doc = WebBrowser1.Document as mshtml.IHTMLDocument2; doc.execCommand("Print", true, null); 

现在我想跳过打印对话框。 请帮忙。

Answer 1

对于使用WPF WebBrowser进行静默打印，下面的代码对我有用：

  private void PrintCurrentPage() { // document must be loaded for this to work IOleServiceProvider sp = WebBrowser1.Document as IOleServiceProvider; if (sp != null) { Guid IID_IWebBrowserApp = new Guid("0002DF05-0000-0000-C000-000000000046"); Guid IID_IWebBrowser2 = new Guid("D30C1661-CDAF-11d0-8A3E-00C04FC9E26E"); const int OLECMDID_PRINT = 6; const int OLECMDEXECOPT_DONTPROMPTUSER = 2; dynamic wb; // should be of IWebBrowser2 type sp.QueryService(IID_IWebBrowserApp, IID_IWebBrowser2, out wb); if (wb != null) { // this will send to the default printer wb.ExecWB(OLECMDID_PRINT, OLECMDEXECOPT_DONTPROMPTUSER, null, null); } } } [ComImport, Guid("6D5140C1-7436-11CE-8034-00AA006009FA"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] private interface IOleServiceProvider { [PreserveSig] int QueryService([MarshalAs(UnmanagedType.LPStruct)] Guid guidService, [MarshalAs(UnmanagedType.LPStruct)] Guid riid, [MarshalAs(UnmanagedType.IDispatch)] out object ppvObject); } 

注意：答案的灵感来自于这个SO q＆a