vb.net - Back button closing app instead of going back on Windows Phone 8.1 -


i've created simple windows phone 8.1 app in visual studio 2013 , added 2 basic pages, along code navigate second screen when button on first screen clicked. going second screen works fine, when hardware button pressed, app closes. want app go first page when button pressed.

i have followed instructions in navigationhelper.vb , added sub new() initialization commands, button still not work. how can pressing work correctly? in advance.

here code:

basicpage1.xaml.vb:

imports app1.common  public notinheritable class basicpage1     inherits page      private withevents _navigationhelper new navigationhelper(me)     private readonly _defaultviewmodel new observabledictionary()      public readonly property navigationhelper navigationhelper                     return _navigationhelper         end     end property      sub new()          initializecomponent()          me._navigationhelper = new common.navigationhelper(me)         addhandler me._navigationhelper.loadstate, addressof navigationhelper_loadstate         addhandler me._navigationhelper.savestate, addressof navigationhelper_savestate     end sub      public readonly property defaultviewmodel observabledictionary                     return _defaultviewmodel         end     end property      private sub navigationhelper_loadstate(sender object, e loadstateeventargs) handles _navigationhelper.loadstate     end sub      private sub navigationhelper_savestate(sender object, e savestateeventargs) handles _navigationhelper.savestate     end sub  #region "navigationhelper registration"      protected overrides sub onnavigatedto(e navigationeventargs)         _navigationhelper.onnavigatedto(e)     end sub      protected overrides sub onnavigatedfrom(e navigationeventargs)         _navigationhelper.onnavigatedfrom(e)     end sub  #end region      private sub button_click(sender object, e routedeventargs) handles button.click         frame.navigate(gettype(basicpage2))     end sub end class

basicpage2.xaml.vb:

imports app1.common  public notinheritable class basicpage2     inherits page      private withevents _navigationhelper new navigationhelper(me)     private readonly _defaultviewmodel new observabledictionary()      public readonly property navigationhelper navigationhelper                     return _navigationhelper         end     end property      sub new()          initializecomponent()          me._navigationhelper = new common.navigationhelper(me)         addhandler me._navigationhelper.loadstate, addressof navigationhelper_loadstate         addhandler me._navigationhelper.savestate, addressof navigationhelper_savestate     end sub      public readonly property defaultviewmodel observabledictionary                     return _defaultviewmodel         end     end property      private sub navigationhelper_loadstate(sender object, e loadstateeventargs) handles _navigationhelper.loadstate     end sub      private sub navigationhelper_savestate(sender object, e savestateeventargs) handles _navigationhelper.savestate     end sub  #region "navigationhelper registration"      protected overrides sub onnavigatedto(e navigationeventargs)         _navigationhelper.onnavigatedto(e)     end sub      protected overrides sub onnavigatedfrom(e navigationeventargs)         _navigationhelper.onnavigatedfrom(e)     end sub  #end region  end class

the full solution here: https://github.com/orangeflash81/simplewpapp

i fixed problem myself adding event handler using addhandler , using frame.navigate go first page. added code:

sub new()     addhandler hardwarebuttons.backpressed, addressof backpressed end sub  sub backpressed(sender object, e backpressedeventargs)     e.handled = true     frame.navigate(gettype(basicpage1)) end sub

Comments

Post a Comment

Popular posts from this blog

powershell Start-Process exit code -1073741502 when used with Credential from a windows service environment -

i'm running strange behavior powershell start-process call. here call: $process = start-process ` "c:\somepath\mybinary.exe" ` -passthru ` -credential $defaultcredential ` -wait ` -workingdirectory "c:\somepath" ` -loaduserprofile if ($process.exitcode -ne 0) { #do } this call return exit code - 1073741502 . after quick search, exit code seems related generic error when program not load required dll (aka. status_dll_init_failed ). when run without -credential $credential program runs correctly. in order isolate problem, manually launched some.exe in prompt target credential , runs smoothly. so problem seems come way start-process cmdlet launch process. i found potential solutions problem tried apply no luck : link , link . would have idea of what's going on here ? edit 1: run proc mon monitoring program activities when launched directly or via powershell script. problem seems occur when loading kernelbase
Read more

twig - Using Twigbridge in a Laravel 5.1 Package -

i'm trying create laravel 5.1 package uses twigbridge instead of .php views. can normal .php views display fine, when try make use of .twig templates i'm met error. possible use twigbridge templates when creating views laravel package or pretty stuck blade , php ? edit 1: loading twig template without extending works. it's when start using {% extends 'file' %} error comes out. i error error loading /virtual/laravel/packages/username/mypackage/src/views/sample.twig: template "templates.master" not defined () in "/virtual/laravel/packages/username/mypackage/src/views/sample.twig" @ line 1. my folders username |_ mypackage |_ src |_ controllers - samplecontroller.php |_ views |_ templates - master.twig - sample.twig twig template sample.twig {% extends 'templates.master' %} {% block content %} {{ parent()
Read more

c# - LINQ join Entities from HashSet's, Join vs Dictionary vs HashSet performance -

i have hashset's each stores t, have written test application compares different relation algorithms can think of, i'm not pleased results getting. does there exist more efficient ways of achieving object relations, once testing? using system; using system.collections.generic; using system.linq; using system.text; using system.threading.tasks; using system.diagnostics; namespace linqtests { class program { static void main(string[] args) { hashset<user> usertable = new hashset<user>(); hashset<userproperty> userpropertytable = new hashset<userproperty>(); #region lets create dummy data. console.writeline("please wait while creating dummy data, can take while..."); console.writeline(""); int rows = 1000000; for(int x = 0; x < rows; x++) { random rnd = new random(); // ad
Read more