UWP: Setting the image.source from FilePath in the 'get; & set;'

Question

Each image in the collection has a serialized File Path. When loading the collection I need the image to load from the File Path. The code below will not work because IsolatedStorageFileStream isn't compatible with the IRandomAccessStream used for to image.SetSource().

public BitmapImage Image
    {
        get
        {
            var image = new BitmapImage();
            if (FilePath == null) return null;

            IsolatedStorageFileStream stream = new IsolatedStorageFileStream(FilePath, FileMode.Open, FileAccess.Read, IsolatedStorageFile.GetUserStoreForApplication());

            image.SetSource(stream);

            return image;
        }
    }

Is there alternative code to accomplish this?

If you can post the code as an answer I'll mark it as a right answer if the code works. — Terry Bennett, Dec 28 '15 at 21:29
To do not repeat the answer take a look to my answer here http://stackoverflow.com/a/29407143/4725755 — Juan Pablo Garcia Coello, Dec 29 '15 at 06:49
@TerryBennett Please also note the comments on Juan's answer, e.g. "be very skeptical of following this advice...". Using `async void` is a bad idea. — Clemens, Dec 29 '15 at 09:02

Clemens · Accepted Answer · 2015-12-28T22:25:30.140

You may simply use the WindowsRuntimeStreamExtensions.AsRandomAccessStream extension method:

using System.IO;
...

using (var stream = new IsolatedStorageFileStream(
    FilePath, FileMode.Open, FileAccess.Read,
    IsolatedStorageFile.GetUserStoreForApplication()))
{
    await image.SetSourceAsync(stream.AsRandomAccessStream());
}

When I tested this SetSource was blocking the application, so I used SetSourceAsync.

You could perhaps also directly access the Isolated Storage folder like this:

var file = await ApplicationData.Current.LocalFolder.CreateFileAsync(
    FilePath, CreationCollisionOption.OpenIfExists);

using (var stream = await file.OpenReadAsync())
{
    await image.SetSourceAsync(stream);
}

UWP: Setting the image.source from FilePath in the 'get; & set;'

1 Answers1