windows-runtime

问题 I'm trying to allow the user to select a contact from the People app this way: private async Task<System.Collections.Generic.KeyValuePair<string, string>> SelectAContactForASlot() { KeyValuePair<string, string> kvp; // = new KeyValuePair<string, string>(); var contactPicker = new Windows.ApplicationModel.Contacts.ContactPicker(); contactPicker.CommitButtonText = "Select"; var contact = await contactPicker.PickSingleContactAsync(); if (contact != null) { kvp = new KeyValuePair<string, string>

问题 In standard .NET there existed the ToAscii/ToUnicode and MapVirtualKey functions to take care of this functionality, though it seems an equivalent function or library has not been brought into Metro/WinRT. If there is actually no equivalent function or library exposed in Metro/WinRT then that would make a custom text input box VERY difficult to bring to market in non-US countries. Specific example: in my custom control, if a french keyboard user presses the è,ù,é, or à keys, they are unable

问题 I have collection of products from web service, I preview this product in Grid View, but I get the images of the products as Base64 strings. How can I convert it to images and bind it to the images in the Grid View? Any piece of code that will help me in this issue. 回答1: In WPF/Metro/Silverlight, Image is a UI control. Its source is set to BitmapSource. BitmapSource is a data structure to hold image data. Following is the code to retrieve BitmapImage from byte array. public BitmapImage

问题 i'm struggling myself with a question - how does in fact LocalSettings work. It's an ApplicationDataContainer class, but is this some kind of a file? Probably yes, but when it's saved? For example we can save some data like this: localSettings.Values["exampleSetting"] = "Hello Windows"; but is it saved to file just after we add/change the Value or it's held somewhere in the memory and saved when App is being Suspended/Terminated? And the main purpose of the question: Do I've to guard the

问题 I have this problem with toast notifications, my app shows toast notifications only when it is activated (I.e: when I am using it). Here is my code for the toast notifications: private void ShowToastNotification(string text) { var xml = ToastNotificationManager.GetTemplateContent(ToastTemplateType.ToastText01); xml.GetElementsByTagName("text")[0].AppendChild(xml.CreateTextNode(text)); ToastNotificationManager.CreateToastNotifier().Show(new ToastNotification(xml)); } My application is simply a

问题 Here is some raw C code using windows.gaming.input.h API: HSTRING gamepadClassName; if (FAILED(WindowsCreateString(RuntimeClass_Windows_Gaming_Input_Gamepad, HbArrayLength(RuntimeClass_Windows_Gaming_Input_Gamepad) - 1, &gamepadClassName))) { Error("Failed to create a WinRT string reference for Windows.Gaming.Input.Gamepad class name."); } static IID const gamepadStaticsInterfaceID = { 0x8BBCE529, 0xD49C, 0x39E9, { 0x95, 0x60, 0xE4, 0x7D, 0xDE, 0x96, 0xB7, 0xC8 } }; if (FAILED

问题 I want to activate a textbox when users starts typing in my Windows 8.1 Store app. I tried handling KeyDown event of Page , something like this code: private void pageRoot_KeyDown(object sender, KeyRoutedEventArgs e) { if (SearchBox.FocusState == Windows.UI.Xaml.FocusState.Unfocused) { string pressedKey = e.Key.ToString(); SearchBox.Text = pressedKey; SearchBox.Focus(Windows.UI.Xaml.FocusState.Keyboard); } } But the problem is e.Key.ToString() always returns capital english character of the

问题 My project here:(https://github.com/79144876/ZXingStoreApp) I have add zxing on my windows phone 8.1 project.The Zxing library here:(https://zxingnet.codeplex.com/SourceControl/latest#trunk/Clients/WindowsRTDemo/MainPage.xaml.cs) But the preview size does not full screen.So,Anybody who knows how to change the preview size ? And i have SetResolution,but still not full screen. Thanks. 回答1: In my code I do this _capture.SetPreviewRotation(VideoRotation.Clockwise90Degrees); _capture

问题 Is it possible to send some data already in the local storage in an Windows 8 app? I'm using a file based database in my project and want to deliever the whole database to the user so that I don't have to create all entries (more than 350). You can find the data of the local storage in C:\Users\ username \AppData\Local\Packages, but there I cannot save information out of my app. Perhaps you have an idea. Thanks. 回答1: The way I did it in the past, to allow writing data to the file was... Add

问题 We have a huge sets of business APIs/assemblies developed in .NET 4.0 (most of those were upgraded from .NET 2.0). They are not currently exposed as web services. We would like to start Win 8 metro app development (using C#/XAML) based on those API's. Is it possible? 回答1: Another option is to target the Portable Class Library (PLC) http://msdn.microsoft.com/en-us/library/gg597391.aspx This way you can compile a single assembly to multi target both normal .net and Metro/WinRT .net. You will of