How to open Popup by clicking on grid view item in windows store app?
All you have to do is on the Onclick event of your gridview's button do the following code : popup.isopen = true Then in your popup if you want to navigate to another page all you have to do is use Navigate on the proper event Frame.Navigate(typeof(YourPage),YourID); EDIT : If...
Windows Store App (sideloaded) and communication with REST services
I thought that those two capabilities are enough: Private Networks with Enterprise authentication - I was mistaken. Despite of that the web service is at the company server, and my windows device was added to company domain I have to set another capability at windows store manifest file: Internet(Client) And...
Frame.Navigate() vs this.Frame.Navigate()
c#,windows-8,windows-runtime,windows-store-apps
There no difference. The this keyword refers to the current instance of the class and is also used as a modifier of the first parameter of an extension method. https://msdn.microsoft.com/en-us/library/dk1507sz.aspx...
Get folder from windows service(system.io) to Windows store App (Windows.Storage)
.net,vb.net,windows-store-apps,windows-8.1,storage
After looking for a while this seems quite impossible to do. However I have found a way to go around the problem by passing each file 1 by 1 into a memorystream. It is possible to store an image into a memorystream and then, on the client, take that stream...
CameraCaptureUI in Windows 8 application takes a mirrored photo
c#,windows-store-apps,bitmapimage
If you want to flip the image that you saved from the stream try this: How to Verticaly Flip an BitmapImage Basicly you should use ScaleTransform instead of Rotation....
How to playback videos with YouTube API v3 in Windows Store apps?
c#,xaml,windows-store-apps,youtube-api,youtube-data-api-v3
It was easier than I thought. I had to update the MyToolkit reference of my project. In addition I had to add MyToolkit.Extended to make use of the YouTube classes. packages.config <packages> <package id="MyToolkit" version="2.3.30.0" targetFramework="win81" /> <package id="MyToolkit.Extended" version="2.3.30.0" targetFramework="win81" /> </packages> ...
Local file storage during development of a Windows Store App
visual-studio-2013,windows-store-apps
As others have pointed out, the app will be installed locally and the app's data will reside in some common place like C:\Users\YourUserName\AppData\local\packages during development. Check with the Packaging tab of your Package.appxmanifest file to determine the Package family name, it's probably going to be something cryptic. There'll be a...
Can't save PdfPage as a BitmapImage to disk
c#,xaml,windows-store-apps,microsoft-metro,winrt-xaml-toolkit
Skip the BitmapImage and load your PDF directly into the WriteableBitmap: WriteableBitmap wb = new WriteableBitmap(1,1); await wb.SetSourceAsync(str); It's not possible to extract the pixels from a BitmapImage, so WriteableBitmapFromBitmapImageExtension.FromBitmapImage has has to get the data from elsewhere: it works when the BitmapImage is loaded from the web since FromBitmapImage...
Multiple item template inside grid view in Windows 8.1 store app
c#,xaml,windows-store-apps,winrt-xaml,windows-8.1
Yes, you can. You need a DataTemplateSelector. You can select an appropriate template for the selected object in the grid/list. Sample for selector: class TemplateSelectorMyPage : DataTemplateSelector { public DataTemplate NormalIconTemplate { get; set; } public DataTemplate BigIconTemplate { get; set; } protected override DataTemplate SelectTemplateCore( object item, DependencyObject container...
Cropping Image with Xamlcropcontrol for UI and WriteableBitmapEx
c#,windows-store-apps,winrt-xaml,writeablebitmapex
You will have to use the WBX WinRT APIs for this. Looks like you are trying the WP / Silverlight methods. Try this: async Task<WriteableBitmap> LoadBitmap(string path) { Uri imageUri = new Uri(BaseUri, path); var bmp = await BitmapFactory.New(1, 1).FromContent(imageUri); return bmp; } Note it takes an URI. In your...
Is it possible to use System.Net.Mail in a Windows App?
No. System.Net.Mail is not available in Windows Store apps. Windows.Store apps can use only the parts of the .Net Framework available in the .Net Framework for Windows Store apps. Windows Store apps do not have an explicit email API. In most cases you are better off letting the user choose...
How to access an element in UserControl from the MainPage?
It turns out that if this UserControl is not my current ItemTemplate: I can't access any of its controls.
RichEditBox two-way binbing does not work [Windows Store App]
c#,data-binding,binding,windows-runtime,windows-store-apps
Because I cannot comment, I have to rewrite my answer! :-( Create a class and name it RichEditBoxExtended Replace the class code with the code from WinRt: Binding a RTF String to a RichEditBox (please recopy I changed the visibility of the class) Go to your XAML and enter: <local:RichTextBoxExtended...
How to create the special toast and swipe down on lock screen like Skype in win8.1?
c#,windows-store-apps,windows-8.1,skype,lockscreen
The Alarm Toast Notification sample shows how to do this for an application that is the Alarm application for the machine: https://code.msdn.microsoft.com/windowsapps/Alarm-toast-notifications-fe81fc74 If your application is a VOIP application then you can modify the toast XML String in that sample to be the following: string toastXmlString = "<toast duration=\"long\">\n" +...
Wizard Design for modern UI (Windows 8.1)
windows-8,windows-store-apps,windows-8.1
Back button, content, next button. Very easy and can be found in google images.
Collapsed Grid in StackPanel change position of other controls in StackPanel
c#,xaml,windows-store-apps,windows-8.1,visibility
Simply set it's opacity to 0 if you don't want to deal with resizing etc.However you must consider interactions like tapping or clicking. Setting an opacity instead of Visibility is much usefull in terms of performance and it's easy....
Save/Get ObservableCollection to/from Roaming
c#,json,windows-store-apps,observablecollection,win-universal-app
The easiest way is to write it in a file in the app data roaming folder; app settings aren't very convenient to store collections. You can use XML, JSON or anything else. These days the trend is to use JSON, so here's an example. Serialization: var folder = ApplicationData.Current.RoamingFolder; var...
Value does not fall within the expected range windows store app
c#,xaml,listview,windows-store-apps,windows-8.1
The ItemsSource property should be assigned the orders collection, not the OrderRootClass instance. var orderData = JsonConvert.DeserializeObject<OrderRootClass>(response); OrderListView.ItemsSource = orderData.orders; // here However, it should have given you a compiler error saying that orderData does not implement IEnumerable....
Appbar guidance results in “Invalid qualifier: SCALE-240”
windows-store-apps,appbar,windows-universal
Scale-240 is recommended for Windows Phone apps and works there (the default templates provide Scale-240 assets). Windows Store apps typically use scales-80,100,150, and 180. See How to name resources using qualifiers The Scale-240 asset won't cause any problems at runtime, but will be ignored on Windows. You'll definitely want to...
Selective coloring of the text in TextBox (Windows Store App)
c#,textbox,windows-store-apps,winrt-xaml,text-coloring
The TextBox doesn't support multi-coloured text. If you want editable coloured text you'll need to use the RichEditBox instead. However, there isn't a direct way to bind to the text of a RichEditBox. You can set the text and its character formatting programatically through the RichEditBox's ITextDocument interfaces. For example,...
Windows Store Apps, download multiple files with threads
c#,multithreading,windows-store-apps,httpclient
you can use Task.WaitAll. It waits for all of the provided Task objects to complete execution. var t1 = DownloadFileService("file1", "1"); var t2 = DownloadFileService("file2", "2"); var t3 = DownloadFileService("file3", "3"); Tasks.WaitAll(t1, t2, t3); ...
Azure StorageException is inaccessible due to its protection level
c#,azure,visual-studio-2013,windows-store-apps,windows-azure-storage
Azure Storage Client Library for Windows Runtime does not expose the StorageException type, because Windows Runtime components are not allowed to declare public exception types (see Throwing exceptions for more information). You can instead pass in an OperationContext object and then check its LastResult....
How to add a simple calendar to my windows store app
visual-studio-2013,calendar,windows-store-apps
What I do understand about Calendars, is there are fourteen of them in total that are possible - seven for each day of the week a normal year begins on, and seven more for leap years. You may have to create all fourteen and put them in somehow. There is...
How to detect If AdRotator V2.1 is showing an Ad or an error occurred
windows-store-apps,windows-8.1,ads,adrotator
This is hack i am currently using. Its quite brittle. Its looking at log message for strings to detect if an error has occurred. public class BaseAdControl { public AdRotatorControl CurrentAdRotatorControl { get; set; } private UserControl userControlWrapper; public BaseAdControl(AdRotatorControl MyAdRotatorControl, UserControl userControlWrapper) { // TODO: Complete member initialization this.CurrentAdRotatorControl...
Windows XAML: Replacement for WPF TextBox's CharacterCasing
c#,xaml,user-interface,windows-store-apps,converter
This is the code I made for it in VB.Net but it should be easy to translate to C# Make a textchanged event for your textboxes and call a method giving it your sender as a textbox Private Sub AnyTextBox_TextChanged(sender As Object, e As TextChangedEventArgs) TextBoxToChange = (CType(sender,Textbox)) TextBoxToChange.Text =...
Enable drag/drop and reordering after long click on GridView control (XAML)
After much fuss and chasing down events, I was able to get the intended effect on pen, mouse, and touch devices. The following code is not guaranteed to be the best way to accomplish the long click drag, but it is functioning on my devices with Windows 8.1. I encourage...
How do I get the text, not the name of the comboboxitem, from a combobox with C# in Windows Runtime?
I searched for an answer for an hour before asking the question. As usual, the answer presented itself only a moment later: <x:String>Sort By HSB</x:String> The items should not be ComboBox items, they should be strings. If anyone wants to comment and let me know more about the "x:" and...
GridView with 2 rows and horizontal scroll
c#,xaml,gridview,windows-runtime,windows-store-apps
I have to say that is not really intuitive and the default behavior is usually vertical for the scrollviewer, here is the solution: <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"> <ScrollViewer VerticalScrollBarVisibility="Hidden" VerticalScrollMode="Disabled" HorizontalScrollBarVisibility="Auto" HorizontalScrollMode="Enabled"> <GridView Grid.Row="1" Margin="22,0,0,0" SelectionMode="None" HorizontalContentAlignment="Center" VerticalContentAlignment="Center"> <GridView.ItemsPanel>...
Windows phone Store app Font size Issue
fonts,windows-runtime,windows-store-apps,windows-phone-8.1,font-size
Sure, XAML text elements support the property IsTextScaleFactorEnabled which is set to true by default. If you want your elements no to be affected by the ease of access settings simply set that property to false: <TextBlock Text="Looking fresh" IsTextScaleFactorEnabled="False" /> You can read more here: https://msdn.microsoft.com/en-us/library/windows/apps/hh868163.aspx...
convert a bitmapImage to byte array for windows store
c#,vb.net,windows-store-apps,windows-store
I found it :D Async Function bitmapTObyte(ByVal bitmapimage1 As StorageFile) As Task(Of Byte()) Dim fileBytes As Byte() = Nothing Using stream As IRandomAccessStreamWithContentType = Await bitmapimage1.OpenReadAsync() fileBytes = New Byte(stream.Size - 1) {} Using reader As New DataReader(stream) Await reader.LoadAsync(CUInt(stream.Size)) reader.ReadBytes(fileBytes) Return fileBytes End Using End Using ...
Opening another WinRT app from another running app in FULL mode
c#,windows-store-apps,windows-8.1
Windows Store apps don't have any way to directly launch other apps. I assume you're launching a URI or file and your app is registered as the default handler (users can choose something else). In your call to Launcher.LaunchUriAsync you can set the DesiredRemainingView in your LauncherOptions to indicate how...
How can I sign my Windows Store app from Window Store certificate?
visual-studio-2013,windows-store-apps,certificate,sign
I believe you only need to sign your app if you are sideloading it. If you upload it to the Windows Store, Microsoft will sign the app for you. From the MSDN article Submitting Your Windows 8 Apps: Signing and publishing. In this final step, we'll sign the packages you...
CameraCaptureUI in some container
c#,camera,windows-runtime,windows-store-apps
1) Add capabilities "Microphone" and "Webcam". 2) Define CaptureElement in the view. <CaptureElement Name="captureElement"/> 3) Create field in your class MediaCapture. private readonly MediaCapture _mediaCapture = new MediaCapture(); 4) Create method that fill CaputreElement with live content from camera. async Task ShowPreview() { try { await _mediaCapture.InitializeAsync(); captureElement.Source = _mediaCapture;...
Do ApplicationData.localSettings get cleared when the app gets updated?
windows-store-apps,windows-store
Those settings are preserved across app updates, as are the roamingSettings and the contents of localFolder, roamingFolder, and tempFolder. In other words, performing an app update does not affect any of the appdata state, which makes perfect sense when you consider that many updates are minor bug fixes and should...
Windows Runtime App TypeCode
.net,vb.net,windows-store-apps
One option is to change the Select Case block to a set of If Else statements, and the comparisons from TypeCode to GetType: Dim type = ce.GetType() If type Is GetType(Int32) OrElse type Is GetType(UInt32) OrElse _ type Is GetType(Int64) OrElse type Is GetType(UInt64) Then value = ParseNumber(Text, target) ElseIf...
UnAuthorizedAccessException on StorageFolder.GetFolderFromPathAsync while having access through FilePicker
c#,windows-runtime,windows-store-apps,windows-10
Your app doesn't have access to the path. The permission to access the file is handled via the StorageFolder returned by the picker. Instead of this line to try to create a new StorageFolder from pickedFolder StorageFolder folder = await StorageFolder.GetFolderFromPathAsync(pickedFolder.Path); Just use the pickedFolder itself: var pathFolderList = await...
How can I create a StorageFile object from URI?
javascript,html5,windows-runtime,windows-store-apps,winjs
I am afraid your only option is to download the file to local storage, and then go from there.
MediaCapture VideoStabilization fails with 0xC00D4A3E
c#,windows-store-apps,windows-universal,windows-10
The desiredProperties parameter of the GetRecommendedStreamConfiguration method needs to get MediaEncodingProfile that will be used when calling your choice of MediaCapture.StartRecordTo* (i.e. the "output properties") to see what your desired VideoEncodingProperties are. The error is being triggered because the VideoEncodingProperties from the VideoDeviceController (i.e. the "input properties") are being passed...
Error APPX1706: creating winrt dll with xaml
xaml,windows-phone-8,windows-runtime,windows-store-apps
A WinMD library is basically a regular library (DLL) with some metadata information. These metadata information will allow it to be used from different languages. You can for example, create a WinMD library in C# and use it from a C++ or JS application. Since the WinMD Library can be...
Load local text file with Windows Metro Javascript
You can identify files included in the appx package with the ms-appx: protocol and can read it with the Windows Runtime StorageFile and FileIO classes. See Quickstart: Reading and writing files (HTML) and the File access sample. var fileName = new Windows.Foundation.Uri("ms-appx:///file.txt"); Windows.Storage.StorageFile.getFileFromApplicationUriAsync(fileName).then(function (file) { Windows.Storage.FileIO.readTextAsync(file).then(function (fileContent) { loadedList =...
Hub/Pivot App template breaks when navigated
javascript,html5,windows-store-apps,windows-phone-8.1,winjs
Problem was solved by changing class in CSS-file of page created as PageControl. Here's code we need to edit: .fragment { -ms-grid-columns: 1fr; -ms-grid-rows: 128px 1fr; display: -ms-grid; height: 100%; width: 100%; } Just change class in html- and css-file, for example, to fragment2, and nothing breaks when you navigation...
How to introduce a delay in actions for my Windows 8 app
Example with 5 seconds delay: DispatcherTimer timer = new DispatcherTimer(); // Call this method after the 60 seconds countdown. public void Start_timer() { timer.Tick += timer_Tick; timer.Interval = new TimeSpan(0, 0, 5); bool enabled = timer.IsEnabled; // Check and show answer is correct or wrong timer.Start(); } void timer_Tick(object sender,...
How to handle mutiple async methods from running?
c#,asynchronous,windows-store-apps,winrt-xaml,winrt-async
Store the task and check for IsCompleted Property. private Task pendingTask = Task.FromResult(0); private async void Button1Click() { if (!pendingTask.IsCompleted) { //Notify the user return; } pendingTask = DoSomethingAsync(); await pendingTask; ... } private async void Button2Click() { if (!pendingTask.IsCompleted) { //Notify the user return; } pendingTask = DoSomethingElseAsync(); await...
Force the App to become on Portrait View when clicking a Button
c#,windows-store-apps,windows-8.1,screen-orientation
It turns out that it is impossible to Set the Application to a certain ApplicationView, Portrait or Landscape without physically turning the device. I tried to trick the user by rotating my image (by animating it in Blend) to look like it's in a Portrait View. The user will then...
Microsoft App Submission Dashboard page sets AdUnitId to “none”?
c#,.net,windows-phone-8,windows-store-apps
Ok, So finally I resolved this issue and I thought to post it here so that others will get benefit too. I have noticed that its a one way process, creating app id in PhoneSubmission page informs Pubcenter, but creating appId in Pubcenter may or may not informs Microsoft's In-App...
Editing the list of apps that appear when i share a file in Windows Store App
c#,windows-runtime,windows-store-apps
You can't do that. If you only want to send an e-mail you could call the e-mail app directly: How to launch other apps https://msdn.microsoft.com/en-us/library/windows/apps/hh452690.aspx Mailto syntax http://www.labnol.org/internet/email/learn-mailto-syntax/6748/...
How to show Windows Phone application to client before publish in store
windows-phone-8,windows-phone,windows-store-apps
You can submit your app to Windows Phone Store BETA. Your app will by certified quickly, and your client will be able to download it just like any other app from Store. The difference is that it will be visible and possible only for him. Log in to you DevCenter...
Windows Store App - Dynamic Binding
c#,windows,windows-store-apps,winrt-xaml
You need to set the binding path and I used always the static SetBinding: var binding = new Binding { Source = _sectionHeaderSlider, Mode = BindingMode.TwoWay, Path = new PropertyPath("Value"), }; BindingOperations.SetBinding(ScrollTransform, Windows.UI.Xaml.Media.CompositeTransform.TranslateXProperty, binding); ...
Hash and Salt string in Windows Store App
c#,hash,windows-store-apps,salt,sha
There is an alternative to using RNGCryptoServiceProvider var buffer = CryptographicBuffer.GenerateRandom(saltlength); var string = CryptographicBuffer.EncodeToBase64String(buffer) Windows.Security.Cryptography is the alternative to System.Security.Cryptography for windows store apps....
Caliburn Micro get service instance
c#,windows-store-apps,windows-phone-8.1,caliburn.micro
I'm supposing you are using MEF with Caliburn.Micro So you can get an instance this way : SampleService service = IoC.Get<ISampleService>(); Hope this will help you....
image slideshow with dispatcher timer in windows store apps
c#,image,windows-store-apps,windows-8.1,slideshow
Logical flaw. In your code, the counter is changed twice, first from Images1.Count - 1 to 0, then incremented in the second if statement from 0 to 1. My fix if (count1 < Images1.Count) count1++; if (count1 >= Images1.Count) count1 = 0; ImageRotation1(); ...
Issue with DispatcherTimer for a Countdown clock
Do not subscribe to the DispatcherTimer every time you call CountDown. DispatcherTimer timeLeft; int timesTicked = 60; public QuickPage() { timeLeft = new Dispatcher(); timeLeft.Tick += timeLeft_Tick; timeLeft.Interval = new TimeSpan(0,0,0,1); } private void QuestionGenerator() { timeLeft.Start(); if (iAsked < 6) { //Code to generate random question } } ...
How to externalize properties in a Windows Store App
javascript,.net,windows-store-apps
You could certainly make an HTTP request from the app on startup to retrieve a configuration file, but that of course assumes connectivity which may or may not work in your scenario. For a Store-acquired app, this is really the only choice. In your scenario, however, you'll be doing side-loading...
Caching Views in XAML changes appearance?
xaml,caching,windows-store-apps
Does this make sense / improve performance of loading controls? Yes, it does make sense, however there are a few things to consider with this. Probably the most important thing is memory management. You need to consider how much memory you will be using when caching your views. Picture...
WCF Service times out from windows 8 unit test project
wcf,unit-testing,windows-store-apps,windows-8.1
Because this is a store app, it runs in a sandbox (AppContainer) and therefore certain things (like WCF) do not work from "unit tests" out of the box. In order to get this to work, I had to add a Loopback Exemption to my development machine for the unit test...
How to exit full screen mode for media element in windows 8.1 store app
Modify your code like this : mediaSimple.IsFullWindow = !mediaSimple.IsFullWindow; ...
Windows Store Apps unavailable in VS 2015 RC
c#,windows-8,windows-store-apps,visual-studio-2015
Minimum required OS for developing Windows Store Apps is Windows 8. With Windows 7 you wont be able to develop Store apps.
Different builds of SQLite in the same Windows Store app bundle
windows,sqlite,sqlite3,windows-store-apps,64bit
You should use MakeAppx tool to create valid appx package bundle, because they are signed. Here is the tutorial about creating bundles.
ObservableCollection to 1 of 3 listviews depending on some property
c#,listview,visual-studio-2013,binding,windows-store-apps
Ugh. So, I didn't realize this but it turns out that Winrt (i.e. Windows Store apps) does not support filtering in ICollectionView. It seems like every time I turn around, I find another XAML/WPF feature that was inexplicably omitted from Winrt, and this is one of them. So, while this...
Navigation from OnDoubleTapped method
c#,windows-runtime,windows-store-apps,control,pushpin
This can be solved via using a dispatcher : Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, new DispatchedHandler(() => { Frame thisFrame = Window.Current.Content as Frame; Window.Current.Activate(); thisFrame.Navigate(typeof(Target)); })); ...
Remove item from list based on listview selected item
c#,listview,visual-studio-2013,windows-store-apps,selecteditem
I have had some trouble making sure I am really testing the code you actually want help with. But I think I have seen enough to understand what the problem you are having is. Specifically: you don't have any connection between the ListView where the items are displayed, and the...
adal javascript windows store app token
javascript,asp.net-web-api,windows-store-apps,adal
The library version you are using is ancient and not supported. Also, cookies play no part in the api communications. I recommend switching to the latest stable ADAL. Windows Store sample using ADAL: https://github.com/AzureADSamples/NativeClient-WindowsStore
Where is the Conversion Namespace in Windows Store Apps
.net,namespaces,windows-store-apps,windows-8.1
If I understand what CTypeDynamic does then System.Convert.ChangeType(Object, Type) looks like the equivalent and is available in the .NET for Windows Runtime apps
Collecting All The User Reviews From The AppAtore
ios,windows-store-apps,app-store
I don't think that you can do that unless you have all applications ids.
Win8/RT Using a custom (.ttf) font
c#,xaml,windows-8,windows-store-apps,winrt-xaml
Try to set FontFamily to /fonts/pirulen rg.ttf#Pirulen Rg. Notice the leading '/'. Basically relative paths are relative to location of your XAML file, so unless your XAML file is in the root you should start your asset paths with '/'.
XAML Style common ancestor
c#,xaml,windows-runtime,windows-store-apps
Try this. <Style TargetType="TextBlock" x:Key="TahomaBase" BasedOn="{StaticResource YourStyleAncestor}"> <Setter Property="FontFamily" Value="Tahoma" /> <Setter Property="HorizontalAlignment" Value="Left"/> <Setter Property="VerticalAlignment" Value="Center"/> <Setter Property="TextWrapping" Value="NoWrap"/> </Style> ...
Working with MIDI in Windows Store App (Win 8.1)
c#,audio,windows-store-apps,midi
I managed to make it work. I've changed the platfrom to x64, and now it works (I used to build it for x86). There is still a problem though (and it is even bigger): I want to integrate this with Unity3d, but Unity3d doesn't allow to build x64 windows apps,...
Check if a character typed in a PasswordBox is numeric or not
c#,xaml,windows-store-apps,windows-8.1
You can subscribe for KeyDown event on the PasswordBox. Maxmum Length can be restricted by setting MaxLength property. private void OnKeyDown(object sender, KeyEventArgs e) { if ((e.Key >= Key.D0 && e.Key <= Key.D9) || (e.Key >= Key.NumPad0 && e.Key <= Key.NumPad9)) return; e.Handled = true; } ...
Public IDictionary member of ViewModel class will not serialize via DataContractSerializer
c#,windows-store-apps,datacontractserializer
If you change the setter of your DataDictionary property from 'private' to 'public', then it should work as expected
Encrypt & Decrypt Local Images in Windows Store App
c#,encryption,windows-store-apps,base64,windows-8.1
It's easiest if the images you want to encrypt are loaded from files and written back out to files. Then you can do: async void EncryptFile(IStorageFile fileToEncrypt, IStorageFile encryptedFile) { IBuffer buffer = await FileIO.ReadBufferAsync(fileToEncrypt); DataProtectionProvider dataProtectionProvider = new DataProtectionProvider(ENCRYPTION_DESCRIPTOR); IBuffer encryptedBuffer = await dataProtectionProvider.ProtectAsync(buffer); await FileIO.WriteBufferAsync(encryptedFile, encryptedBuffer); } DataProtectionProvider.ProtectStreamAsync...
Why would you use DataTemplate in a ListView?
c#,wpf,xaml,windows-phone-8,windows-store-apps
DataTemplate is used to show data in ways beyond a simple text block. Sure doing this: <ListView.ItemTemplate> <DataTemplate> <TextBlock Text="{Binding Name}"/> </DataTemplate> </ListView.ItemTemplate> Doesn't buy you much. But it allows you to do stuff like this: <ListView.ItemTemplate> <DataTemplate> <StackPanel> <Image Source="{Binding ImagePath}"/> <TextBlock Text="{Caption}"/> </StackPanel> </DataTemplate> </ListView.ItemTemplate> Which is pretty...
Windows store app ItemsControl HTML-table-like behavior
Unfortunatelly, there isn't such panel available by default. If number of your items is static (or at least number of columns is static), you can use Grid as ItemsPanelTemplate, and set Grid.Row and Grid.Column in ItemContainerStyle trough converter. Otherwise, you need to implement your custom panel by overriding ArrangeChildren and...
Application configuration files for Windows Universal app
windows-phone-8,windows-store-apps,windows-universal
No direct equivalent, you need to create something similar by yourself.
MultiBinding(WPF) alternative for Windows Store Apps
windows-runtime,windows-store-apps,winrt-xaml
Considering that the data your are binding are coming from different view models and it could be too complicated to merge them into a single property, you should consider creating a custom control to handle this scenario. While you will still not be able to multi-bind, you will be able...
StorageFile filled with stream, not replacing the File
c#,windows-store-apps,itextsharp,filesavepicker
You open it for ReadWrite which preserves the previous contents. In order to truncate you need to cast to a FileRandomAccessStream and then set the Size to zero: var picker = new FileOpenPicker(); picker.FileTypeFilter.Add(".txt"); var file = await picker.PickSingleFileAsync(); var stream = (await file.OpenAsync(FileAccessMode.ReadWrite)) as FileRandomAccessStream; stream.Size = 0; var...
Element is already the child of another element - WinRT
c#,windows-runtime,windows-store-apps
As @Rawling suggested, clearing the Tiles from StackPanel before objGrid.Children.Clear(); was the solution. Added following code before that statement and it worked like a charm. foreach (StackPanel panel in objGrid.Children) { panel.Children.Clear(); } ...
Can't Navigate to next Frame [duplicate]
wpf,navigation,windows-store-apps,windows-phone-8.1
Add async keyword to OnNavigatedTo method and add await Task.Delay(10); before Frame.Navigate() call. Alternatively, you can execute Frame.Navigate() in Dispatcher. 1) using delay protected override async void OnNavigatedTo(NavigationEventArgs e) { await Task.Delay(10); Frame.Navigate(typeof (LoginView)); } 2) using Dispatcher protected override async void OnNavigatedTo(NavigationEventArgs e) { Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => { Frame.Navigate(typeof(LoginView));...
Add music to windows 8.1 app - Visual studio 2013
windows,visual-studio-2013,windows-store-apps
Do you mean music while the app is playing or music running when the app is in the background? For both you'll set up a MediaElement running the music file you want to play. Since the MediaElement will only play while it's in the visual tree you need to play...
How to call a function in Windows 8 app?
javascript,html,windows-store-apps,windows-8.1
I solved it. There is no way (From what I know) to call a function that is not in the function itself. When I write the function like a regular function in the function itself it worked. Example for what I found: anotherFunction: function () { function textchange() { document.getElementById("id").innerText...
Activator with MvvmCross and PCL
xamarin,windows-store-apps,mvvmcross
Thanks for all the answers. I am feeling a little embarrassed now, because I figured the problem out and it was totally my fault :). @Anders: You was right, I misspelled the Activator in the Immediate windows and that is why the error was there in the first place -...
Cant get twoWay Binding from Xaml to ObservableCollection Working
c#,binding,windows-store-apps,winrt-xaml,inotifypropertychanged
The correct XAML should look like <TextBox Text="{Binding ValveName, Mode=TwoWay}"/> rather than <TextBox Text="{Binding ValveName}, Mode=TwoWay"/> Edit On a side note: This code isn't thread safe. Between this.PropertyChanged != null and this.PropertyChanged another thread could unsubscribe and PropertyChanged becomes null. public void OnPropertyChanged(string propertyName) { if (this.PropertyChanged != null) {...
How do I Random all the items in the listbox?
c#,xaml,random,listbox,windows-store-apps
Here is an example. XAML: <Grid> <Grid.RowDefinitions> <RowDefinition/> <RowDefinition Height="Auto"/> </Grid.RowDefinitions> <ListBox Grid.Row="0" Name="Playlist" ItemsSource="{Binding Path=PlaylistItems}"/> <Button Grid.Row="1" Name="Shuffle" Content="Shuffle" Click="Shuffle_Click"/> </Grid> Note that there is PlaylistItems binded to ListBox. It would be the best to manipulate the collection of items, which is binded to ListBox, instead of manipulating ListBox...
Errors in Generated Files for WinRT XAML DirectX Universal App
c++,visual-c++,windows-runtime,windows-store-apps,winrt-xaml
I created another project walking through the steps I had performed, and ran a diff on the two projects. The entire Common directory (and namespace, which included NavigationHelper) was unique to the original project. I then remembered that at one point I had accidentally added a XAML page. I promptly...
Linq, join and null how to check a value
Basically what you want is a left outer join. you can do that by using join into instead of just join. var res = from t in tmp group t by t.UserID into g join c in com on g.Key equals c.UserID into j from subc in j.DefaultIfEmpty() select new...
Package.appxmanifest: Identity-property and certificate (correlation?)
c#,windows-store-apps,certificate,windows-store
If you're publishing through the store you don't need to worry about this. The store will sign the app. Associate the app with the store from Visual Studio and it will set the Identity etc. for you. You don't need to do this manually. You only need to handle signing...
ListBox selected item background color
I just did this recently for one of my apps using a ListView. It should be similar for ListBox but you might want to use ListView as they are similar and I know it works. You need to modify the style to set the SelectedBackground and SelectedPointerOverBackground colors. I set...
Creating a marquee lookalike in Windows Store Apps
c#,windows-runtime,windows-store-apps,marquee
There are no Marquee controls in Windows Store Apps. I have managed to find code doing something similar to what you are trying to do. Go take a look at WPF Marquee Text Animation. If you play around with that code you should be able to get the wanted result...
Stopping background audio task on app termination
windows-runtime,windows-store-apps,windows-phone-8.1,background-audio
The BackgroundAudioTask is designed to continue even the main app has been terminated/suspended. There is no way to inform the BackgroundTask that the suspended app has been terminated. After the app is suspended, no events are called or any code is run from your app. The last things what you...
Pointer events are not firing when HubSection Manipulation mode is set to System
c#,windows-store-apps,windows-phone-8.1
You'll get this behaviour any time you have a ScrollViewer either directly or within a control (most collection controls contain a ScrollViewer, including the Hub). When the ScrollViewer receives the PointerPressed event it takes over the pointer handling to run its scrolling, and once the ScrollViewer is in charge it...
AccessViolationException in Windows.Media.SpeechSynthesis.SpeechSynthesizer constructor
c#,windows-runtime,windows-store-apps,sapi
I believe that your customer has bad data in the registry key HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\Speech\Voices\Tokens, which is where SAPI stores the information about what voices are installed on the system. Clearly, some keys are present (given that the code is trying to add a token from the registry key), but the values...
XAML GridView in GridView with different orientation
xaml,windows-runtime,windows-store-apps
Simple working example: Linking only vertical offset of two scrollviewers And I found advanced example in 5th sample of the "XAML input and manipulations - advanced concepts": https://code.msdn.microsoft.com/windowsapps/XAML-input-and-manipulation-44125241...