CODEWITHSUNDEEP
c#uwprambitmapimage
Micheleuno
Micheleuno

Reputation: 21

Ram usage of BitmapImage in UWP

In order to learn how develop on C# and Visual Studio i made an offline UWP application to read Comic/Manga stored in my Windows-based tablet.
One of the main steps was take the relative directory of each image in one episode and create a BitmapImage of eachone to load them to the FLipView.

Currently i'm doing it this way:

foreach (String value in ImageDirectory)
{                 
    StorageFile file = await StorageFile.GetFileFromPathAsync((value));
    IRandomAccessStream fileStream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read);
    image = new BitmapImage();
    await image.SetSourceAsync(fileStream);  
    images.Add(image); //images is a <List> of BitmapImage
 }

In the most extreme case i have, with 124 images (50,1 Mb on disc) when loaded they use about 860 Mb of Ram which seems excesive. I know that load all the images as one is not the most efficent approach, where a more on-demad solution would be better, but finally my questions is:

Is there a better (that uses less ram) way to load the images?

Upvotes: 0

Views: 579

Answers (1)

Dimos K
Dimos K

Reputation: 152

You have to have in mind that images loaded in memory are not compressed like on your disk. They are handled as bitmaps (uncompressed)

if you want to see a preview from all images on your disk, a good approach is to resize your images in memory, like in How to Copy and Resize Image in Windows 10 UWP, and load the full image on demand.

Upvotes: 1

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