This sample shows how to use a Blob and the Window.Storage.Pickers.FileOpenPicker to load and display images and video. It also shows how to create single- and multi-use Blob objects, how to save a canvas to a Blob and then load it as an image, how to download content through XHR and save it locally, how to use MSBlobBuilder to create a Blob, post a Blob to the web, and how to retrieve a thumbnail and use a Blob to display it in an image tag.

This sample is written in HTML, CSS, and JavaScript.

To obtain an evaluation copy of Windows 8.1, go to Windows 8.1.

To obtain an evaluation copy of Microsoft Visual Studio 2013, go to Visual Studio 2013.

Note  For Windows 8 app samples, download the Windows 8 app samples pack. The samples in the Windows 8 app samples pack will build and run only on Microsoft Visual Studio 2012.

Related topics

How to select and display an image
Windows 8 app samples

Related technologies

Windows 8 apps using JavaScript, Blob , Window.Storage.Pickers.FileOpenPicker

Operating system requirements

Windows 8.1
Windows Server 2012 R2

Build the sample

  1. Start Visual Studio 2013 and select File > Open > Project/Solution.
  2. Go to the directory in which you unzipped the sample. Go to the directory named for the sample, and double-click the Visual Studio 2013 Solution (.sln) file.
  3. Press F7 or use Build > Build Solution to build the sample.

Run the sample

To debug the app and then run it, press F5 or use Debug > Start Debugging. To run the app without debugging, press Ctrl+F5 or use Debug > Start Without Debugging.