BackButton Event (VB) [WP8.1]

Hello!
I have a Program with 2 Frames ("MainPage" and "Inicio", "Inicio" is the first one to be opened).
"Inicio" Has a Link to open "MainPage" and, when the user is on "MainPage", I want to make an event that when the BackButton (the <- on the phone) is pressed, the Program go back to "Inicio", but instead of it, the
program is suspended and the Phone go back to the Windows Home.
I'm working on VB and I can't find any tutorial or Event to VB, all that I found on google was to C# and I don't know how to convert
code from C# to VB for now.
The problem is that I have to code the event on the XAML Page and, not like when we code on .vb, I don't have suggestion or error marks.
I can write "xmlns=aigwiuagwa_aiuwdaiu" and for the builder that Event exists.
*I'm working with Windows Phone 8.1, not on Windows 8.1 or Universal App either.
**I don't believe that you need the code because I just need the event and test it, but, if you need it, just ask it to me and I'll put it here.
Greetings

This is crazy...
The problem was that I was ussing "Blank Page", and I needed to use "Normal Page".
"Normal Page" has Navigation Helper that detects if there is another Page/Frame to go back or not.
Another thing is that NavigationHelper has a lot of "#IF WINDOWS_PHONE_APP Then" and it doesn't detects that it is actually
an Windows Phone Apps, so the Back Button doesn't works either. The solution was to Delete that IF, and below of then is allways an "ElseIf", the thing is to replace that "ElseIf" with "#IF WINDOWS_APP then". I needed to do it
3 times.
Now my app is working fine.

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Event handlers for backbutton

Hi,
I want perform some validations when I press back button.how to find event handlers for back button,because F2
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Regards,
Brahmaji

Hi,
the back button is always part of toolbar buttons.
So you can open the view controller class and open the GET_TOOLBAR_BUTTONS method from that class.
In this method you see how the BACK button is defined. One of the attribute of button structure is ON_CLICK.
The value of this attribute should be the event name that is triggered when the button is clicked.
Now open the DO_HANDLE_EVENT method from the view controller class, you will have methods with prefix EH_ON
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Regards,
Steve

Google calendar event times are shown as -1h

Summary:
When I create a new event in the built in WP8 calendar app to a Google calendar the time of the event is being displayed as one hour earlier.
Steps to reproduce:
Create a new event in calendar. Choose one of the Google calendars configured (I have two configured in my phone). Set time as 2013/07/17 16:00. Save the event.
Expected behavior:
The event time in the agenda view is shown as 2013/07/17 16:00.
Observed behavior:
The event time in the agenda view is shown as 2013/07/17 16:00 for a few seconds. It then automatically changes to 2013/07/17 15:00.
Other notes:
I have two Google calendars configured. I can observe the same misbehavior on both.
I also have a Microsoft (@hotmail.com) calendar configured. This works as expected.
When I log into my Google calendar using a web browser, the time is shown as expected.
When I use a third party calendar (Chronos) and sync my Google account directly, the time is shown as expected.
When I use a third party calendar (Chronos) and use it simply as an interface to the built in WP calendar the time is off again showing 2013/07/17 15:00.
The timezone on my WP is set to (UTC) London.
I started noticing this perhaps a week ago. It was working as expected before.
Phone model is Nokia Lumia 925
Phone OS version is 8.0.10327.77
Notes 1-6 suggests to me that the internal calendaring module in WP8 fails to recognize DST (daylight saving time) in timezone (UTC) London or misinterprets relevant information fields on Google calendar objects.
Note 7 suggests to me that this is related to an update to my WP8 phone or a change in Google calendar API.
Any help is much appreciated, this is driving me rather nuts.
Thanks,
Kaarel

Further investigation reveals this only happens when the event is created from within WP native calendar app and disappears when I make an edit to the event in any other calendar client including Google web. So a more appropriate description of the problem would be:
"Native calendar app keeps subtracting 1h off a Google calendar event on EVERY edit"
Create an event at 2013/07/17 15:00 in WP native calendar app. Result: Event shows as 2013/07/17 15:00 in the calendar app for a few seconds, then updates itself to 2013/07/17 14:00.
Edit the event title and save in WP native calendar app. Event time moves by -1h again to 2013/07/17 13:00.
Edit the event title in Google web calendar.
Subsequent edits in WP native calendar do not mess up the time any longer. If I fix the time to what I originally intended (2013/07/17 15:00) in WP native calendar app, it stays there and shows correctly in all previously mentioned calendar viewers.
I just learned that Lumia 925 was released with GDR2 update pre-installed. This update is only now being made generally available. If the issue is secific to the CalDAV implementation in GDR2 rather than specific to my phone only, this would make a lot of angry people. I hope I'm wrong on this though as it's an extremely frustrating problem.

Not able to successfully subscribe to and see the TargetApplicationChosen event fire from Windows Phone 8.1

Matt,
Thanks for the reply.
In my current experience, I am not able to successfully subscribe to and see the TargetApplicationChosen event fire from Windows Phone 8.1.
In Windows Store 8.1 (Tablet), it works fine.
Questions
Is this event expected to fire in Window Phone 8.1 (Universal Apps, Not Silverlight 8.1) ?
Does this event depend on the target application to supply AppName?
Thanks for your help. Much appreciated.
Example Code Block
//From Page Contstructor or OnNavigatedTo Handler
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_dataTransferManager.TargetApplicationChosen += DataTransferManagerOnTargetApplicationChosen;
private void DataTransferManagerOnTargetApplicationChosen(DataTransferManager sender, TargetApplicationChosenEventArgs args)
//fires in tablet but not phone

This is not an answer, Mr. Wong. The link you referenced refers to the DataTransferManager class being supported only in Native apps, which includes Windows Phone 8.1 RT apps. All aspects of the DataTransferManager work except for the TargetApplicationChosen
event under a WP8.1 universal app. This event does NOT fire in the Windows Phone 8.1 RT API implementation of DataTransferManager.
You need to reopen this thread and address the issue, please. The lack of support for this event is problematic for some phone scenarios, most notably supporting NFC Tap and Share.
Mark Jones, Owner MJ App Factory

Value Change event is not working. Html Panel Grid get method is not called

Hi,
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Hi,
I'm having the exact same problem, and it's freaking me out!!! The setGridPanel method is always called but not the getGridPanel. This one is only called the first time the page is rendered, and when I change a drodpdownlist it never gets the gridPanel again! I'm using an HtmlPanelGrid. Anyone can help please?
Thanks in advance,
Raquel

WP8.1 Upgrade Successful for Developer Preview Phones?

Hey,all.
For you folks who installed WP8.1 early via the developer preview program with their Lumia 822 and Lumia 928 phones, did the WP8.1/Denim upgrade perform successfully without any hiccups?
Just curious.
Thanks in advance!

Since the Windows Phone calendar shortcomings is one of my favourite rants, and since I know that developers hate users, especially when they are right - can someone please forward the link below to the Windows Phone developers, so they know what I expect from a smartphone calendar regarding historical range and the amount of data?
http://support.apple.com/kb/HT4489
Also, from plowing through their forums:
* Future events are always synchronised between the phone and the cloud.
* Past events are user selectable synchronised for weeks, months or anytime on the phone.
TIA
EDIT:
After digging around during some rainy days, it turns out the Windows Phone calendar automatically purging past and future events is a deliberate decision, older than my Nokia N8 phone:
http://answers.microsoft.com/en-us/winphone/forum/wp7-wppeople/calendar-entry-limitations/52b6b187-f...
Votes and comments can also be added at
http://windowsphone.uservoice.com/forums/101801-feature-suggestions/suggestions/2281174-allow-calend...
I have put it into the same category as my quest against Microsoft using Sv: in Danish email replies instead of Re: ...
Hans

Using FlipView to create a PhotoViewer with pinch to zoom capability (like WP8 PhotoApp)

Hello,
I'm currently developing a Universial App using WinRT to develop for Windows 8.1 and WP8.1. Inside that app I want to view a couple of images. Viewing the images works just fine with a FlipView but the disadvantage is, you cannot zoom. I searched for a solution
for several hours but I cannot manage to find something good.
Most solutions say I should use a ScrollViewer but it seems that it cannot work fine with the flipView as I'm still able to switch the image while I have a zoomed image and thus the next image is also zoomed as well.
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Regards

It's been a while since you posted this and I only saw it by chance but here's your answer, hope you will see it :)
In my current solution I'm still using a FlipView but I don't handle zoom events with a ScrollViewer. Instead I created a small control which is embedded in the FlipView as ItemTemplate so I can handle the pinch to zoom gesture. To prevent flipping the Images
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WP8.1 Silverlight App Ads, Obj ref not set to instance....

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Start Error------
at Microsoft.Advertising.Mobile.UI.AdvertisingWebBrowser..ctor(Double controlWidth, Double controlHeight, Boolean isClickable, Boolean showProgressBar, WebBrowserPool objectPool)
at Microsoft.Advertising.Mobile.UI.AdvertisingWebBrowser..ctor(Double controlWidth, Double controlHeight, String html, WebBrowserPool objectPool)
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End Error-------
“If you want something you've never had, you need to do something you've never done.”
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helpful posts and answers
! Answer an interesting question? Write a
new article
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*This post does not reflect the opinion of Microsoft, or its employees.

Hi Paul,
I would like to reproduce your issue. Can you share the code or XAML how your ad was placed in your page?
Thank you,
Sean Zhang
From Ad SDK team
Seems I deleted that project when I started the new one.
I was using the Canvas.SetLeft/SetTop methods and the RenderTransform(with RotateTransform) property of the ad control. It is also notable that I used the Canvas.SetZIndex method
When the phone was shifted into a Landscape orientation, the ad would throw the error. If I started the app with the phone shifted into a PortraitUp position, there was no error.
“If you want something you've never had, you need to do something you've never done.”
Don't forget to mark
helpful posts and answers
! Answer an interesting question? Write a
new article
about it! My Articles
*This post does not reflect the opinion of Microsoft, or its employees.

DatagramSocket's MessageReceived event with MF MediaSource strategies?

I'm trying to integrate sending and receiving data over UDP sockets using Media Foundation. I've already got my MF MediaSink setup to send data out over a UDP socket. However, I can't figure out how to get an MF MediaSource to receive data.
I'm using a Multicast setup and want to just listen at a single port. I know how to bind to a service (and I know about the overload for store apps to handle the error with some NICs). What I don't know how to do is handle the MessageReceived event of
DatagramSocket via the MF MediaSource.
From what I can tell, I can't handle it from the MF MediaSource because the MediaSource is a COM class, not a WinRT class... correct?
So what strategy should I be using?
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I was trying to do something very similar to how the "Simple Communication" sample works for initialiating a connection using a StreamSocket. However, that was done once and I need my event to loop. I couldn't get it to work without throwing
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in a loop from the MF MediaSource.
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This has helped quite a bit. Thanks for pointing me in the right direction!
FYI, it would help to create a primer on the history of C++ as it pertains to Microsoft technologies. I think a lot of people who learn to program now don't necessarily have a formal background in computer programming (mine is in chemistry).
I learn from examples and there are plenty of great C++ samples for Windows Store apps, but they are all pretty high level. I didn't really know until now that they use C++/Cx. I've seen the term before but couldn't make the connection
as to what it was out of the C++ I was being shown. I didn't know what WRL was or MFC or any of the other names applied to a flavor of C++.
The hardest thing about learning over the internet is that you'll get examples written using any number of these... whatever they are called. Books tend to focus on console apps if they explain COM or WRL. The ones that use store apps tend to
focus on C++/Cx and WinRT only.
All I'm saying is that someone should write a book that explains the non-C++/Cx (and relevant) portions of C++ for Win8.1/WP8.1 to a C# or JavaScript Windows Store app writer .
Lee McPherson

WP8 Nokia Lumia 810 "Other" Storage!

I purchased two Nokia Lumia 810 WP8 phones on 12/31/2013. As of Monday, February 18, 2013 I can no longer install updates, take photos & videos; therefore playing games is also not an option since the phone cannot be updated because it continues to state it's "full" no available space. It does ask if I want to change the setting to save to my SD card which I've configured since day 1. I have a 16gb SD card with 9gb available which I cannot do anything with. I haven't even started paying for our phones and can't even use it. I've deleted many apps leaving me with pretty much the basics, turned off my back up since I ead the back up is saved to the phone, deleted Internet history/browsing, messages, call logs, I have no music and 100 photos...no vidie....seriously, haven't had the phoneslong enough to load up on pics as I typically do. I have 1,600 photos in my iPhone with 6gb available. Has anyone taken this any higher...media, Facebook, Twitter etc?? This is totally unacceptable.

You simply cannot resist it can you? No, you were not “merely stating my experience and reporting what I found”; for if you had done so, I would have no cause to respond the way I did. You added, “Spending a few minutes researching it instead of going off on a rant is usually much more productive”; which implies the questioner does not have a problem, but merely a lack of understanding. Moreover, there is no way that this could be construed, by anyone, as you “not saying others do not have an issue or that there could not be an issue, just that I am not seeing in my case.” By stating that he could have avoided the complaint by doing some research, you are virtually stating that he only requires ‘educating’; and you definitely stated that his complaint was a “rant”. I detect nothing that is overly declamatory, angry or vehement in his original question; though I’m sure he would have some justification for feeling frustrated.
Furthermore, you do not ‘merely state’ your position in reply to me; because you add the phrases, “hampered by any prejudice or negativism” and “someone feels the need to hijack a thread for his own personal baseless vindication”. This clearly implies my judgment is hampered by baseless prejudice, does it not? I have been a Nokia user, non-stop, for over 20 years; and a Microsoft one (and ardent supporter) for nearly as long. There is no-one, I suggest, less prejudiced against either organisation than me; except those who are so ‘prejudiced’ as to see any justifiable criticism as ‘ranting’.
In any event, it seems like "this behaviour makes perfect sense" is not something with which even Microsoft’s Windows Phone Design Manager, Joe Belfiore, would agree.
http://wmpoweruser.com/microsoft-acknowledges-promises-fixes-for-other-storage-issue/
The fact that he is recommending turning off Sky Drive Auto-upload indicates this is not a “baseless” problem; but one based on reasoned, ‘unprejudiced’ observation.
Like many others, it took me only a few days to recognise a looming problem; and we didn't have anyone pointing it out to us. You seem to remain oblivious to it, even with literally hundreds of people pointing it out to you, and right up until Microsoft acknowledged it; though perhaps you feel Joe Belfiore has taken to ranting?

WP8 SL and WP8.1 SL app push notification using wns

Hi,
I am new to windows phone push notification. I am aware that there are two service which can be used for push notification WNS and MPNS(Server). I have a silverlight app for both windows phone 8 and windows phone 8.1. Doubt I have, Will WNS work for this
app? If yes any client side changes are required to receive the notification or it will work with the old MPN client implementation used for WP8?

MPN Notification works on Windows Phone 8.0 and Windows Phone 8.1 Silverlight apps. WNS Notification Service works on both Windows Phone 8.1 Silverlight and Windows Phone 8.1 Runtime apps. So you can choose either of them.
Gaurav Khanna | Microsoft .NET MVP | Microsoft Community Contributor
Thanks for reply,
So you mean to say if I have single app for WP8 SL and WP8.1 SL I can not go with server implementation using WNS.
According to slides at link http://channel9.msdn.com/Events/Build/2014/2-521(Silde no- 11), it says existing MPN code needs not to be changed. So I suppose existing MPN code(Client) should work with WNS server side, Please correct me if am wrong.

ContainerContentChanging Event Phase property not changing

Using a ListView on WinRT WP8.1 app:
I'm trying to use ContainerContentChanging event on a ListView as so -
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                args.RegisterUpdateCallback(this.ContainerContentChangingDelegate);
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            else if (args.Phase == 2)
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            else if (args.Phase == 3)
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The issue I'm having is Phase property on the ContainerContentChangingEventArgs is always 0 when scrolling to view more items.
(All works correctly for the items loaded in the initial view - it's only when I start scrolling that no items get updated past their placeholder.
Any ideas why Phase property would not be updating?

Hi BradStevenson,
Move to Windows Phone forum for a better support.
RegisterUpdateCallback(TypedEventHandler(ListViewBase, ContainerContentChangingEventArgs)) will help you get into other phrase number other than 0.
Base on the blog:
http://blogs.msdn.com/b/hanxia/archive/2013/11/04/incremental-update-item-data-for-listviewbased-controls-in-windows-8-1.aspx we need to call RegisterUpdateCallback function to enter the next phase after your finished the content displaying in the current
phase.
--James
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HERE to participate the survey.

WP8 calendar incorrectly shifts entries by 1 hour during DST

The default calendar app is broken when it comes to handling daylight saving with Google calendar. See here for more details and history
http://answers.microsoft.com/en-us/winphone/forum/wp8-wpemail/new-calendar-event-creation-is-completely-broken/977bb5bd-ca27-4fe8-b228-70b3ffaddafa
I've actually reported the problem on Nokia forums, the WP Twitter support, online chat, phone support, community forums but none of these seem to be officially monitored by Microsoft (http://answers.microsoft.com/en-us/winphone/forum/wp8-wpemail/how-to-file-bug-reports-with-microsoft/e573bc4a-5762-42d1-b356-273352a46ee2).
The following blog post gives me some hope that the issue will finally reach relevant people as this new forum is supposedly monitored by Microsoft
http://blogs.windows.com/windows_phone/b/windowsphone/archive/2013/10/29/it-pros-now-have-a-windows-phone-support-forum-of-their-own.aspx
According to increasing number of comments to the first link the problem is spreading fast among WP users. I've just found someone had opened an issue on uservoice
http://windowsphone.uservoice.com/forums/101801-feature-suggestions/suggestions/3378048-please-fix-the-daylight-savings-function

Hello everyone,
We're still looking for a cause for the issue, but here is what we know:
The observed hour shift is
not a configuration issue that can be resolved either on the phone or on your Google Calendar settings.
The event does not shift until the phone syncs via CalDAV with the Google server for customers in certain time zones (observed in UTC+2).
The shift does not occur if the phone does not have connectivity (WiFi or Cellular).
Based on this info, my investigation is focused on why synced events are receiving an updated event from the Google server with a one hour difference from the intended time.
From what I can observe, the phone sets the event's time correctly, then syncs with Google's server. We see the issue after this process.
The issue was previously resolvable by changing sync type to EAS via Google Sync. Windows Phone users can continue to set up new device connections with Google Sync until December 31, 2013.
http://googleblog.blogspot.com/2012/12/winter-cleaning.html/
https://support.google.com/a/answer/2716936?hl=e
Additional info:
Google has acknowledged certain DST related event time skewing issues with the Google Calendar DST translation process and have supplied information and several workarounds covered here
https://support.google.com/calendar/answer/2367918?hl=en
I hope the community finds this information helpful. We'll update again once we have additional information.
Have a safe and Happy New Year!
-MikeDano

BackButton Event (VB) [WP8.1]

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