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| //<snippetImports> | |
| using System; | |
| using System.IO; | |
| using System.Runtime.InteropServices.WindowsRuntime; | |
| using Windows.UI.Xaml; | |
| using Windows.UI.Xaml.Controls; | |
| using Windows.UI.Xaml.Media.Imaging; | |
| using Windows.Storage; | |
| using System.Net.Http; | |
| using Windows.Storage.Pickers; | |
| //</snippetImports> | |
| namespace TextFile | |
| { | |
| /// <summary> | |
| /// An empty page that can be used on its own or navigated to within a Frame. | |
| /// </summary> | |
| public sealed partial class MainPage : Page | |
| { | |
| public MainPage() | |
| { | |
| this.InitializeComponent(); | |
| } | |
| //<snippet1> | |
| private async void button1_Click(object sender, RoutedEventArgs e) | |
| { | |
| // Create a file picker. | |
| FileOpenPicker picker = new FileOpenPicker(); | |
| // Set properties on the file picker such as start location and the type | |
| // of files to display. | |
| picker.SuggestedStartLocation = PickerLocationId.DocumentsLibrary; | |
| picker.ViewMode = PickerViewMode.List; | |
| picker.FileTypeFilter.Add(".txt"); | |
| // Show picker enabling user to pick one file. | |
| StorageFile result = await picker.PickSingleFileAsync(); | |
| if (result != null) | |
| { | |
| try | |
| { | |
| // Retrieve the stream. This method returns a IRandomAccessStreamWithContentType. | |
| var stream = await result.OpenReadAsync(); | |
| // Convert the stream to a .NET stream using AsStream, pass to a | |
| // StreamReader and read the stream. | |
| using (StreamReader sr = new StreamReader(stream.AsStream())) | |
| { | |
| TextBlock1.Text = sr.ReadToEnd(); | |
| } | |
| } | |
| catch (Exception ex) | |
| { | |
| TextBlock1.Text = "Error occurred reading the file. " + ex.Message; | |
| } | |
| } | |
| else | |
| { | |
| TextBlock1.Text = "User did not pick a file"; | |
| } | |
| } | |
| //</snippet1> | |
| //<snippet2> | |
| private async void button2_Click(object sender, RoutedEventArgs e) | |
| { | |
| // Create an HttpClient and access an image as a stream. | |
| var client = new HttpClient(); | |
| Stream stream = await client.GetStreamAsync("http://www.visualstudio.com/IC691934.png"); | |
| // Create a .NET memory stream. | |
| var memStream = new MemoryStream(); | |
| // Convert the stream to the memory stream, because a memory stream supports seeking. | |
| await stream.CopyToAsync(memStream); | |
| // Set the start position. | |
| memStream.Position = 0; | |
| // Create a new bitmap image. | |
| var bitmap = new BitmapImage(); | |
| // Set the bitmap source to the stream, which is converted to a IRandomAccessStream. | |
| bitmap.SetSource(memStream.AsRandomAccessStream()); | |
| // Set the image control source to the bitmap. | |
| image1.Source = bitmap; | |
| } | |
| //</snippet2> | |
| } | |
| } |