c# - How to print Webview on a windows store app -


hey guys have been trying print webview using tutorial jerry nixon gave on how print webview content in windows store app? , tutorial "windows 8 apps xaml , c#" adam nathan, have attached code below example:

using system; using windows.graphics.printing; using windows.graphics.printing.optiondetails; using windows.ui; using windows.ui.core; using windows.ui.xaml.controls; using windows.ui.xaml.media; using windows.ui.xaml.printing;  namespace chapter19 { public sealed partial class mainpage : page {     // supports printing pages, each page uielement     printdocument doc = new printdocument();      public mainpage()     {         initializecomponent();          // attach handlers relevant events         doc.getpreviewpage += ongetpreviewpage;         doc.addpages += onaddpages;          printmanager printmanager = printmanager.getforcurrentview();         printmanager.printtaskrequested += onprinttaskrequested;     }      // prepare print preview pages     void ongetpreviewpage(object sender, getpreviewpageeventargs e)     {         this.doc.setpreviewpagecount(2, previewpagecounttype.final);         if (e.pagenumber == 1)         {             this.doc.setpreviewpage(1, new viewbox             {                 child = new button                 {                     content = "page 1!",                     background = new solidcolorbrush(colors.red)                 }             });         }         else         {             this.doc.setpreviewpage(2, new viewbox             {                 child = new button                 {                     content = "page 2!",                     background = new solidcolorbrush(colors.red)                 }             });         }     }      // prepare real pages     void onaddpages(object sender, addpageseventargs e)     {         this.doc.addpage(new viewbox         {             child = new button             {                 content = "page 1!",                 background = new solidcolorbrush(colors.red)             }         });         this.doc.addpage(new viewbox         {             child = new button             {                 content = "page 2!",                 background = new solidcolorbrush(colors.red)             }         });         this.doc.addpagescomplete();     }      // prepare , perform printing     void onprinttaskrequested(printmanager sender,                               printtaskrequestedeventargs args)     {         // gets invoked devices pane shown         printtask task = args.request.createprinttask("document title",           async (taskargs) =>           {               // invoked on background thread when print               // button clicked               var deferral = taskargs.getdeferral();               await this.dispatcher.runasync(coredispatcherpriority.normal, () =>               {                   // must run on main thread                   taskargs.setsource(doc.documentsource);                   deferral.complete();               });           });          // show custom options          printtaskoptiondetails details =         printtaskoptiondetails.getfromprinttaskoptions(task.options);         details.displayedoptions.clear();         details.displayedoptions.add(standardprinttaskoptions.mediasize);          // custom text option         printcustomtextoptiondetails option1 = details.createtextoption(           "customid1", "header");         details.displayedoptions.add("customid1");          // custom list option         printcustomitemlistoptiondetails option2 = details.createitemlistoption(           "customid2", "contents");         option2.additem("customitemid1", "as seen on screen");         option2.additem("customitemid2", "summary view");         option2.additem("customitemid3", "full details");         option2.additem("customitemid4", "multiple columns");         details.displayedoptions.add("customid2");          // handle options changes         details.optionchanged += onoptionchanged;     }      void onoptionchanged(printtaskoptiondetails sender, printtaskoptionchangedeventargs args)     {         // todo: handle custom options     } } }

the problem having struggling "mywebviewpages" jerry generated onto "this.doc.setpreviewpage" , "this.doc.addpage" nathans example. due lack of pdf api's on winrt forced use webview since way have tables. please


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