isolatedstorage

Lazy loading of listbox images from isolated storage

穿精又带淫゛_ 提交于 2019-11-30 20:37:10
I have lots of images stored in isolated storage and want to display them in a listbox. However, I don't want all images to be loaded right away but lazily. So only when the user scrolls to see new items the images should be loaded. I also want to use data binding for providing the list item's data and image. In the tests I did all images always got loaded right away and at once, so I am unsure whether this lazy loading can be achieved with the default ListBox and data binding. Can it? You can use the standard ListBox to "lazy load" your items with databinding. The keyword here is "data

Adding files to WP7 isolated storage from Visual Studio?

一个人想着一个人 提交于 2019-11-30 17:31:08
问题 I'm working on an Windows Phone 7 app where I'm going to show ATM's nere your location with bing maps. I have an xml-file with addresses and gps coordinates. But how do I add this file to my program from visual studio? If I set BuildAction to Content and Copy to output directory to Copy always. The file still isn't in IsolatedStorage. Do I have to build a mechanism to download the information from the web? Or is there another way? 回答1: You cannot directly pass files to the isolated storage at

Lazy loading of listbox images from isolated storage

旧街凉风 提交于 2019-11-30 05:00:09
问题 I have lots of images stored in isolated storage and want to display them in a listbox. However, I don't want all images to be loaded right away but lazily. So only when the user scrolls to see new items the images should be loaded. I also want to use data binding for providing the list item's data and image. In the tests I did all images always got loaded right away and at once, so I am unsure whether this lazy loading can be achieved with the default ListBox and data binding. Can it? 回答1:

Windows Phone 7 Silverlight binding image from the IsolatedStorage

左心房为你撑大大i 提交于 2019-11-29 09:00:25
I need to find the way to save images to the IsolatedStorage and show them I the Silverlight (XAML) Important: Silverlight have to take image “himself”, I cannot set the image from the code behind I have tried many solutions before. The very last solution is, to bind byte array and convert them to the Image XAML StackPanel Orientation="Horizontal" Margin="0,0,0,20"> <Image Width="110" CacheMode="BitmapCache" Source="{Binding ThumbLocal,Converter={StaticResource imgConverter}}" Margin="12,0,9,0"/> <StackPanel Width="311"> Code behind public byte[] ThumbLocal { get; set; } public class

Binding image in Isolated Storage

↘锁芯ラ 提交于 2019-11-29 04:36:46
Hey. I have a list of items that the user can search. The search results are displayed in a listbox. Each animal object has a path to an image in Isolated Storage. What's the quickest way to bind my Image control inside the listboxitem to the image in the isolated storage? Examples I've seen tend to display images from the internet rather than Isolated Storage. If I have around 10 images, it seems to take up all the memory and crash. thanks EDIT: I'm using this in my BitmapConverter class (inherits IValueConverter) public object Convert(object value, Type targetType, object parameter, System

StorageFile Async usage in a NON Metro application

岁酱吖の 提交于 2019-11-29 04:21:50
I am trying to create an instance of StorageFile in my class library... var localFolder = ApplicationData.Current.LocalFolder; StorageFile destinationFile = await localFolder.CreateFileAsync(destination, CreationCollisionOption.GenerateUniqueName); VS11 is not building say: 'await' requires that the type 'Windows.Foundation.IAsyncOperation' have a suitable GetAwaiter method. Are you missing a using directive for 'System'? obviously I am using .net 4.5 as target and I am referencing Windows Assemblies... not sure why this code work in MetroStyle but does not build in a class library... How can

Download, save( locally ) and display PDF from a link

梦想的初衷 提交于 2019-11-29 00:46:05
I am developing Windows phone 8 application. In my application, i have to display PDF file in offline( without net connection ) mode, within application. For that i have to do the following, Download PDF file from a link( URL ) provided by server side. Save the downloaded PDF file in local storage. Open and display PDF file from local storage. On searching, i found suggestions to use ComponentOne Studio's toolset called 'Studio for Windows Phone'. Unfortunately it is not free. Is there any way to implement in free of cost? Any reference, samples or ideas will be greatly appreciated. You can

Isolated Storage & Saving Multiple Objects

拈花ヽ惹草 提交于 2019-11-28 11:05:34
问题 I wish to know what the best way is to create Saving and Loading logic so that I can save and load x items. For example, in Isolated Storage I can easily save a composite/POCO object by doing this: var settings = IsolatedStorageSettings.ApplicationSettings; settings.Add("key", myObject); And load like this: var settings = IsolatedStorageSettings.ApplicationSettings; return settings["key"] as MyObject; But how would I load x amount of Objects from IsolatedStorage? Would it be best to create a

Can I get a path for a IsolatedStorage file and read it from external applications?

ぃ、小莉子 提交于 2019-11-28 06:55:00
I want to write a file where an external application can read it, but I want also some of the IsolatedStorage advantages, basically insurance against unexpected exceptions. Can I have it? You can retrieve the path of an isolated storage file on disk by accessing a private field of the IsolatedStorageFileStream class, by using reflection. Here's an example: // Create a file in isolated storage. IsolatedStorageFile store = IsolatedStorageFile.GetStore(IsolatedStorageScope.User | IsolatedStorageScope.Assembly, null, null); IsolatedStorageFileStream stream = new IsolatedStorageFileStream("test.txt

Is there a “first run” flag in WP7

六月ゝ 毕业季﹏ 提交于 2019-11-28 01:19:47
I would like to know if there is a "first run" flag or similar in WP7. My app takes some stuff out of isolated storage so I would like to determine if this is necessary first time. I am currently using an if to check if the named storage object exists but this means I can't handle any memory loss errors in the way I would like. I don't think there is a built in feature for this ... but I know what you mean :-) I implemented "first run" myself using iso storage in the open source khan academy for windows phone app . All I do is look in iso storage for a very small file (I just write one byte to