c# - Cannot access LocalFolder files on Windows phone app (UnauthorizedAccessException) -


i trying application write (then read) simple text file in windows phone 8. app has 3 controls: create file button, display file button, , textbox contents supposed display.

i have following events set in code:

private async void btncreatefile_click(object sender, routedeventargs e)     {         await applicationdata.current.localfolder.createfileasync("myfile.txt");         storagefile file = await applicationdata.current.localfolder.getfileasync("myfile.txt");          streamwriter writer =  new streamwriter(await file.openstreamforwriteasync());          writer.writeline("hello world");         writer.writeline("goodbye world");     }      private async void btnshowfile_click(object sender, routedeventargs e)     {         storagefile file = await applicationdata.current.localfolder.getfileasync("myfile.txt");          streamreader reader = new streamreader(await file.openstreamforreadasync());          string text = reader.readtoend();         text1.text = text;      } }

the application throwing unauthorizedaccessexception when streamreader being created. can shed light on why?

i guess you're not disposing streamwriter. see example on msdn.

 using( var writer =  new streamwriter(await file.openstreamforwriteasync()))  {         writer.writeline("hello world");         writer.writeline("goodbye world");   }

that's why can't read file, because it's taken sreamwriter.


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