All Questions
Tagged with .net-4.5 windows-runtime
62
questions
18
votes
2
answers
8k
views
How do I print WebView content in a Windows Store App?
I have a Metro App and I am attempting to Print the Content of a WebView control. Using the MSDN Print Sample as my source reference. I simply change the XAML in the printableArea as follows:
<...
- 3,122
15
votes
2
answers
16k
views
Task.Run and Func<>
How can I run a Task that return value and takes a parameter? I see that there is an overloaded method Task.Run<TResult>(Func<TResult>) but how I can pass a parameter there?
- 707
14
votes
1
answer
10k
views
HttpClient HttpResponseMessage Address / URI
I am developing a C# WinRT application that makes POST and GET requests to a webserver.
Does anyone know if there is a way to get the Response URI / Address when using a HttpClient object?.
If I ...
- 1,699
13
votes
5
answers
6k
views
How can I start a Windows App Background Task immediately after registering it?
I am writing a Metro App that will only run on PCs (so there is no, or at least less, worry about the battery life). I need it to register and run a background task when the user clicks a button. It ...
- 5,620
13
votes
1
answer
511
views
Why do WinRT framework assemblies have the same fully qualified name as their (different) non-WinRT counterparts?
This is really just more of a curiosity type question. I deal with looking up types across assemblies and raw IL. Windows 8 really puts a kink in something I'm implementing though. I've found that ...
- 62.9k
11
votes
2
answers
5k
views
Can a Task have multiple awaiters?
I am toying around with an async service for a Windows 8 project and there are some async calls of this service, which should only be called once at a time.
public async Task CallThisOnlyOnce()
{
...
user604613
8
votes
1
answer
6k
views
WinRT - TCP clients?
I am building an IRC client in the new WinRT (.NET 4.5) framework for Windows 8 Metro applications.
However, I have some issues. I've already figured out that I need to use a StreamSocket to read TCP ...
7
votes
3
answers
3k
views
How can I attach to a WinRT event dynamically?
I want to use MVVM in a WinRT (Windows 8) app, and one of my requirements is to be able to hook events up to commands (ICommand). This means I have to dynamically add a handler to a WinRT event. There ...
- 163k
6
votes
4
answers
6k
views
WinRT: App to enumerate files outside libraries and known folders
I am working on a Metro app that shows the content of a given folder in a ListView control.
MS decided that developers don't need the System.IO.Directory class and removed it entirely from the ...
- 4,735
6
votes
1
answer
7k
views
Using HttpClient Class with WinRT
I have a Piece of code which works perfect in .NET (4.0)
Code#
string URI = "http://www.indianrail.gov.in/cgi_bin/inet_pnrstat_cgi.cgi";
string Parameters = Uri....
- 4,865
6
votes
1
answer
3k
views
Capture the stream from microphone in WAV formatting
I'm migrating an metro style application from windows phone 7.5 to windows 8. My application was used to capture the microphone input stream .
I've found MediaCapture class in the win 8 api for metro ...
- 1,677
5
votes
1
answer
752
views
Metro App FileIO.WriteTextAsync Multiple Threads
I have a method which is called frequently from multiple threads. It involves writing to disk using await FileIO.WriteTextAsync. This works fine when it is called from a single thread, but once I ...
- 3,122
4
votes
3
answers
7k
views
Writing to a file using FileSavePicker
I'm having a little difficulty figuring out what the cause of this error is. I've added FilePicker capabilities in the Manifest, and it's not like I'm trying to do anything crazy; just trying to save ...
- 139
4
votes
2
answers
1k
views
How to Interop with Windows Runtime in .NET 4.5
I see this namespace:
System.Runtime.InteropServices.WindowsRuntime
Which provides interop between .NET and WindowsRuntime.
For instance, you can invoke a method in WindowsRuntime when you create a ...
- 217
4
votes
1
answer
566
views
WinRT API in .Net 4.5
I am trying to use
Windows.Media.Capture.CameraCaptureUI() of Metro Style app
in WPF application in VS11. Now I know there are others library for doing camera capture, but It is possible to use a ...
- 594
3
votes
2
answers
555
views
C# Testing method with StorageFile as parameter
First of all, this is a Microsoft Store winrt library and I am trying to test a public method with this signature:
string GetStringFromFile(StorageFile storageFile);
But StorageFile doesn't have a ...
- 3,204
3
votes
1
answer
5k
views
Copy file into install directory of metro-style-app
Is there a way to copy a file (selected with filepicker) to the installdir of the currently running metro style app? I tried to get the InstallationFolder with:
Windows.ApplicationModel.Package ...
- 2,582
2
votes
5
answers
3k
views
Windows Metro loading data asynchronously
I have created a Windows 8 Metro App based on the Split Page sample app. However, in the sample app the data is loaded synchronously in the constructor. I'm accessing a text file and therefore need ...
- 16.5k
2
votes
1
answer
4k
views
How to resolve a hostname to an IP address in Metro/WinRT?
I'm in the process of porting a WP7 app to Windows 8 Metro and one of the (many) conversion obstacles I've encountered is discovering an IP address based on a hostname or DNS name. The following is an ...
- 1,856
2
votes
1
answer
107
views
Object Initializer where property isn't assigned
I had a type-o in my windows-8 app store code. I got a strange result, so I went back to look and realized I missed a value, but it still compiled and ran without errors. Thinking this was strange, ...
- 19.8k
2
votes
5
answers
3k
views
.NET 4.5 Metro Application DependencyProperty
I cant get DependencyProperty.Register to work.
It requires (string, string, string, PropertyMetadata) instead of string, Type, Type, UIPropertyMeatdata)...
I changed the UI-PropertyMetadata part ...
- 2,801
2
votes
1
answer
308
views
Alternative to CurrentManagedThreadId that is constant across await?
In my C# logging classes, I display CurrentManagedThreadId in the log output so that it's possible to follow a specific thread of execution. I also use the thread ID as a unique key to manage per-...
- 3,938
2
votes
1
answer
300
views
How to deploy a file from Visual Studio to an accessible folder in XAML Metro App?
I have XAML Metro app. I need to deploy a static file to be read on every app launch. I have access to certain paths only (eg LocalStorage and InstalledLocation..is that right?)
How do I make VS 2012 ...
- 9,985
2
votes
1
answer
418
views
Metro App StorageFile GetThumbnailAsync Background
In a Metro App, when retrieving the Thumbnail of a StorageFile using the GetThumbnailAsync() method, the Background Color is a Dark Blue/Navy Blue.
Is it possible to override this Color? I would like ...
- 3,122
2
votes
1
answer
1k
views
WebAuthenticationBroker authenticate with LiveID returns Success status but no Security Token
I am using ACS to authenticate in a Windows 8 application. I am observing exactly what I expect in that the UI displays the authentication dialog and on successfully entering my LiveID credentials I ...
- 3,990
2
votes
1
answer
849
views
Multiple calls wait on the same async task
Basically I have a lot of places in my app where in order to do something I need to make sure a product image is downloaded. I want to centralize this call into one place so I make sure to only ...
- 918
2
votes
2
answers
1k
views
DateTime parse bug in WinRT Windows 8 RTM?
Having upgraded to Windows 8 RTM, some date time parsing code that I had has stopped working. I've replicated this using a standard console app:
CultureInfo provider;
provider = new CultureInfo("en-...
- 16.5k
2
votes
0
answers
303
views
c# WinRT Updating ListView with DatePicker
I am using Visual Studio 2013, .net 4.5.
I am having a problem with updating my ListView from my DatePicker. When changing a date it should update my ListView with the new dates via my DateChanged ...
- 124
2
votes
0
answers
601
views
windows 8 metro app converts text to image [duplicate]
Is there a way to convert text to an image with Windows store app API?
The analogous code in a normal windows app would be:
graphics.DrawString(txt, font, Brushes, 0, 0);
- 21
2
votes
0
answers
333
views
How to implement CCAvenue payament gateway in Windows 8 App using C# and XAML
I am trying to implement CCAvenue payment gateway in Windows 8 App using C#. I am not able to find how to achieve this. Is there any article related to integrating payment gateway in Windows 8 App?
- 3,441
2
votes
0
answers
561
views
UDP Discovery with WinRT (Metro-style APIs)
I'm having a lot of trouble trying to implement WS-Discovery in Metro. There doesn't seem to be support for Discovering services:
I'd like to do the following in Metro, but don't think I'm able to ...
- 13.9k
1
vote
4
answers
10k
views
Data Binding an observable collection of strings
I have the following class:
public class MyClass
{
public ObservableCollection<string> MyList { get; set; }
public string MyListTitle { get; set; }
...
I'm populating it as follows:
...
- 16.5k
1
vote
1
answer
2k
views
Metro App ListView SelectedItem Selected VisualState
I have a Metro App with a ListView that contains this definition:
<ListView Grid.Row="0" x:Name="lv" CanDragItems="True" CanReorderItems="True" IsTabStop="True" SelectionMode="Extended" ...
- 3,122
1
vote
2
answers
1k
views
How to load/import dll with MEF out of metro app?
I've trying to write a extendable metro app using MEF. I got it working with a local extension (inside of the current assembly). Now I want to load a external dll. The DirectoryCatalog seems to be not ...
- 2,582
1
vote
1
answer
913
views
Windows 8 Metro style App installation
I have x86 tablet running Windows 8 Pro and i am trying to install appx package created in RTM on it , i ran as administrator everything
but application is not getting installed and I am getting ...
- 13
1
vote
1
answer
1k
views
Action delegate in winrt api
Hi i an developing an app on windows rt.I tried to use Action but it says it is not a valid winrt type.I was not able to find any source about it which could elaborate further.
my code
public void ...
- 602
1
vote
1
answer
887
views
How to search the Windows 8 contacts from .Net?
I'm doing estimates for a Windows 8 app, and I would like to programatically search the Windows 8 contacts store for a person's name based on their phone number or email address. Is this possible in ...
- 2,665
1
vote
3
answers
402
views
Custom accept header not working on Windows Phone 8
I have a class in a Portable Class Library (targeting .NET 4.5 and Windows Phone 8.1) that uses the HttpClient (System.Net.Http.HttpClient) class to post a string to a web service. The service ...
- 2,778
1
vote
1
answer
320
views
Metro App ListView Binding Item Issue
I am experiencing a unique problem with my Metro App. The problem is as follows:
I have a Custom Serializable ObservableCollection which is capable of Sorting and Filtering. This object is then bound ...
- 3,122
1
vote
1
answer
233
views
Metro App Permissions Settings Charm
My Metro App, uses Notifications and requires Lock Screen Access. All working great! Now, I notice that a Permissions settings charm is automatically created, with an option to turn On and Off these ...
- 3,122
0
votes
2
answers
3k
views
Create sub folders in My Pictures from Windows Store application
I'm trying to create a folder structure within My Pictures folder from a Windows store app. But I can't seem to get pass the first level.
I create my first level folder using the following code:
...
- 4,578
0
votes
2
answers
1k
views
generic methods with observablecollections
This is for a Windows 8.1 Store app using .Net 4.5
I found myself replicating the same code for each "object" that I have. So I'm trying to create a more generic method to get all the data the way I ...
- 8,991
0
votes
2
answers
558
views
Web References (ASMX) on WinRT
I'm working on a Windows Store App for Windows 8.1, trying to connect to a Web Service.
This Web Service has client implementations for both Web References and Service References. But I'm having ...
- 3
0
votes
1
answer
902
views
Reflection issue in WinRT
I am having an issue porting a WP7 app to a win8 store app...
I run this code to populate fields from elements inside XML file:
Venue lv = new Venue();
foreach (var t in Fields)
...
- 1,278
0
votes
2
answers
139
views
Notify main thread when button is clicked
I am trying to create a Popup like this
// Create a Popup
var Pop = new Popup() { IsOpen = true };
// Create a StackPanel for the Buttons
var SPanel = new StackPanel() { Background = MainGrid....
- 877
0
votes
1
answer
655
views
PInvoke in WinRT results in Error _NO_TOKEN(1008)
I am trying to access Battery device information (On the lines of Enumerating Battery Devices) using PInvoke and .Net4.5. I have one WPF application working fine, and able to get all sort of low level ...
- 2,317
0
votes
1
answer
450
views
Windows.Storage.FileIO - How to save objects
So I was using Isolated Storage to save my objects locally as XML. It worked, but now Microsoft has changed how it works. According to this site:
http://msdn.microsoft.com/en-us/library/3ak841sy....
- 8,991
0
votes
1
answer
118
views
Windows 8 XAML C# implement Page_Error?
I am trying to create a base page for my Windows 8 application. I am trying to create a page Error method so that any error that occur in the entire application can be bubbled up to base page and ...
- 3,441
0
votes
2
answers
2k
views
C# JavasScriptSerializer in Windows 8
In this thread: How to convert XML to JSON using C#/LINQ?
i found the code for Converting XML to Json. I tried to implement this to Windows 8 but i have a Problem that the:
JavaScriptSerializer
...
- 654
0
votes
1
answer
777
views
Metro App HtmlAgilityPack construct well formatted Html
I have a Metro App that formats html from various sources and as such there isn't any consistency in the html structure. Fortunately, there's an HtmlAgilityPack build for Metro Apps which I think can ...
- 3,122