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UWP with Microsoft Azure


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Upload and retrieve Image form Microsoft Azure

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UWP with Microsoft Azure

  2. 2. 1 UWP WITH MICROSOFT AZURE UWP with Microsoft Azure STORE IMAGE AND RETRIEVE IMAGE BY USING BLOB STORAGE Pre-Requirement 1. Install Visual Studio 2015 2. Install Azure SDK 3. Microsoft Azure Account Let Start to Code! Click the NEW > DATA SERVICES > STORAGE > QUICK CREATE > fill in the information > Create storage Account
  3. 3. 2 UWP WITH MICROSOFT AZURE After the account is created you will find the dashboard. To access azure storage we have a storage account name and access keys. Click on manage access keys at the bottom and you will find them as below. We will now create a Windows UWP with the following UI. Add mobile services and azure storage nuget package foe the app. <Button x:Name="button" Content="Select Picture" HorizontalAlignment="Left" Margin="65,77,0,0" VerticalAlignment="Top" Height="68" Width="221" Click="SelectPic_clicked" FontSize="26.667"/> <Image x:Name="image" HorizontalAlignment="Left" Height="240" Margin="65,256,0,0" VerticalAlignment="Top" Width="335"/>
  4. 4. 3 UWP WITH MICROSOFT AZURE In the button click event paste the following code, private async void SelectPic_clicked(object sender, RoutedEventArgs e) { try { FileOpenPicker fop = new FileOpenPicker(); fop.FileTypeFilter.Add(".jpg"); fop.FileTypeFilter.Add(".jpeg"); fop.FileTypeFilter.Add(".png"); fop.SuggestedStartLocation = PickerLocationId.PicturesLibrary; StorageFile sf = await fop.PickSingleFileAsync(); IRandomAccessStream str = await sf.OpenAsync(FileAccessMode.Read); CloudStorageAccount account; CloudBlobClient blobClient; CloudBlobContainer container; account = new CloudStorageAccount(new StorageCredentials("Insert your account name", "Insert your key"), true); blobClient = account.CreateCloudBlobClient(); container = blobClient.GetContainerReference("pictures"); await container.CreateIfNotExistsAsync(); BlobContainerPermissions per = new BlobContainerPermissions(); per.PublicAccess = BlobContainerPublicAccessType.Blob; await container.SetPermissionsAsync(per); CloudBlockBlob blob = container.GetBlockBlobReference(sf.Name); await blob.UploadFromFileAsync(sf); BitmapImage bmp = new BitmapImage(); bmp.UriSource = blob.Uri; BlobData imageData = new BlobData { imageUrl = blob.Uri.ToString(), name = sf.Name };
  5. 5. 4 UWP WITH MICROSOFT AZURE await App.MobileService.GetTable<BlobData>().InsertAsync(imageData); var m1 = new MessageDialog("Image Uploaded").ShowAsync(); image.Source = bmp; } catch(Exception ex) { var m2 = new MessageDialog(ex.ToString()).ShowAsync(); } In the above code I have used FileOpenPicker to select an image. And used Mobile service to store blob name and url once uploaded. Use your account name and account key. I have used the following code for class. To retrieve images from the blob storage, I used mobile services to store the information. Use the following code to make the UI. Add the following is the c# code for retrieval of images. public class BlobData { public string id { get; set; } public string name { get; set; } public string imageUrl { get; set; } } <Button x:Name="button1" Content="Download Images" HorizontalAlignment="Left" Margin="618,64,0,0" VerticalAlignment="Top" Height="81" Width="259" FontSize="26.667" Click="Download_clicked"/> <ListView x:Name="ImageList" HorizontalAlignment="Left" Height="483" Margin="659,184,0,0" VerticalAlignment="Top" Width="496"> <ListView.ItemTemplate> <DataTemplate> <StackPanel> <TextBlock Text="{Binding name}" /> <Image Height="120" Width="150" Source="{Binding imageUrl}"/> </StackPanel> </DataTemplate> </ListView.ItemTemplate> </ListView> List<BlobData> allImages = await App.MobileService.GetTable<BlobData>().ToListAsync(); ImageList.ItemsSource = allImages;
  6. 6. 5 UWP WITH MICROSOFT AZURE Screenshot 1 Screenshot 2 Screenshot 3
  7. 7. 6 UWP WITH MICROSOFT AZURE Screenshot 4 Screenshot 5
  8. 8. 7 UWP WITH MICROSOFT AZURE References: 1. How to operate Azure Blob and Table Storage in Windows Store apps 2. Universal Windows Platform (UWP) App Development